JPS6059392A - Automatically accompanying apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic dicing device that reads waveform data and automatically generates accompaniment sound signals such as chords, albejos, bass notes, etc. By storing data representing the chord and reading out the stored waveform data at a rate determined according to the chord specification operation, a live performance effect can be obtained with as little memory and amount as possible. This is what I did.

(・[U.S., for electronic musical instruments, the entire waveform of one musical instrument's sound from its rise to its extinction is stored in the memory, and the waveform data is not read out from the memory in response to the first issue command.) In particular, a technique for reproducing porcelain ware is known (see Japanese Patent Application Laid-open No. 121313/1983 for details).

These technologies include autocode, autoalbejo, and autobase! When applied to the illumination device, it is possible to approximate the individual accompaniment sounds generated in the accompaniment pattern to the sounds of natural music. However, since the first-order reproduced sound is generated by repeatedly reading out one note's worth of waveform data, the sound quality is exactly the same. There is an inconvenience that the difference in sound quality cannot be reproduced and a good live performance effect cannot be achieved.

In addition, the problems that need to be solved in realizing this glaze digital recording type automatic banqin device are: firstly, it is possible to change the tempo without changing the pitch or deteriorating the sound quality; The objective is to reduce the capacity of the waveform data memory.

The purpose of this invention is to provide a variable tempo automatic accompaniment device ijj' that can produce a good live performance effect with as little memory usage as possible.

In this company's automatic accompaniment device, waveform data representing the next accompaniment note wave JThg to be generated is stored in the memory. The starting waveform pattern is determined according to the chord designation operation. Accordingly, accompaniment sound signals are sequentially generated J'L. In this case, the reading start timing of the waveform data regarding the sequential accompaniment sounds is determined by the timing pulse of IFj that is generated according to the variable tempo, It ( 'Let's wait for the decision to be made in sync.

According to one percent characteristic of this onset jJ, means are provided for modifying the waveform data for the next rl-note read out from the memory, and by this means j old method r1' The shape of the waveform of the tones is controlled into a musically preferable shape.

According to the other five characteristics of the bull of this invention, a plurality of groups of waveform data are stored in a memory, each corresponding to a predetermined multi-row tempo range, and part of the waveform data to be read from this memory is set. selected according to the selected tempo.

According to still another feature of the invention, a plurality of groups of waveform data are stored in a memory, each corresponding to a plurality of predetermined ranges, and a portion of the waveform data to be read from the memory corresponds to a specified chord. is selected according to the root note of.

According to still another feature of the invention, there is provided a first waveform data storage/retrieval system for accompaniment sounds with relatively short envelopes, and a second waveform data storage/retrieval system for accompaniment sounds with relatively long envelopes. A readout system is provided, and these storage and readout systems are controlled by a common variable tempo setting device.

The invention will now be described in detail with reference to embodiments shown in the accompanying drawings.

First Embodiment FIG. 1 shows an automatic accompaniment apparatus according to a first embodiment of the present invention.

The stop control switch 1o during the start is the one that turns on the accompaniment scoot 11 and the 2t on level and on at the time of stop, respectively, and is connected to the source of the ``1'' function.Control i'11 switch When 10 is turned on, play mode 4., J number P LAY jumps to "1".

Tempo hole ζN:'ri 12 is play mode signal PL
When AY becomes "1", the tempo clock pulse 'I' (CI, K) is generated as shown in Figure 2, in the enabled state.

The L=J fatigue tempo setting device 14 includes a volume that is operated by hand, etc., and is configured to provide tempo control data indicating a set tempo to the tempo control device 12. There is. The frequency of the tempo clock pulse TCLK generated by the tempo hole prototype 12 is equal to the tempo ff71J fi'll of the variable tempo setting device 14).
The data V data is also controlled according to the fez Q constant tempo.

The tempo force untae 6 is - for example, 1 small, i, J length δ
It consists of another flip-flop, and counts the tempo clock pulse TCLK and outputs h1.
It is designed to generate several output CNTs and a carry-out pulse co. Before the control 1 switch 10 is turned on, all bits of the tempo counter 6Fi counting output CNT are set to ``1'' in response to the output signal ``1'' of the inverter 18 which receives the play mode number PLAY="0°". Therefore, when the play mode signal PLAY becomes "1#TL" in response to the ON operation of the control switch 1o, the tempo counter 16 receives the first tempo clock pulse TCLK from the tempo generator IIp 12. Accordingly, when all bits of the count output CNT become "0", the first carry pulse co is generated at -1(,).

Thereafter, the tempo counter 16 counts the second and subsequent tempo clock pulses TCLK'5r and Jlfj and increases the count value sequentially. tempo counter 1
6 counts the tempo clock pulses TCLK for one measure, all bits of the count output CNT become "steps".

Then, in response to the first tempo clock pulse TCLK of the second measure, the tempo counter 16 causes all bits of the count output CNT to become 0# and generates a carry-out pulse Co of 2 Hi Ll. After this, the same l(t,'' (next il number ■ Yamasaku writing function) as described above is carried out, and the tempo counter 16+) and the JiIl'j next count output CNT are repeatedly generated. At the same time, a carry-out pulse CO is generated every time one measure ends.

The Ryuhata selection switch circuit 2o selects the accompaniment f! of waltz and rock q. ! r X and fi, and in response to the accompaniment selection operation using these accompaniment start selection switches, the accompaniment type designation data ASD indicating the selected melody is sent !It has become.

The timing pattern memory 22 stores timing patterns representing sequential accompaniment sound generation timings for each Fi' $ J"'i class as described above, and includes an accompaniment selection switch. The constant data ASD of the accompaniment Ui class 4) is supplied from the circuit 2o as a static addressing signal, and the divisor output CNT from the tempo counter 16 is supplied as a dynamic addressing signal.

When a specific accompaniment type Wl is designated by the accompaniment type designation data ASD, a timing pattern corresponding to the designated accompaniment type is read out in a warped manner in accordance with the count output CNTK. Therefore, the 14th timing pulse '1' P T N is sent out from the timing pattern memory 22 in accordance with the timing pattern corresponding to the specific type of accompaniment, as shown in FIG.

The address counter 24 receives a timing pulse TPTN as a clock signal CK, and also receives a reset signal R and a C carry-out pulse co, and the clock signal CK and the reset signal R are simultaneously received at 11. Once supplied, the series reset input R acts preferentially. Before turning on the control switch 10, the inverter 18 receives the play mode signal P LAY-“0”.
In response to the output signal 'l', the tempo counter 16 is set so that all bits of the output CNT become '1'!/.Then, as mentioned above, the control switch lO is turned on. Then, the first carry-out pulse Co is generated from the tempo counter 16.The address counter 24 i,;j:, after being reset accordingly, the timing pulse 'f' P T N sequentially tlC tears &, I! L/
, the counting output is provided to the address storage device 26 as a dynamic addressing signal.

The address storage device 26 has a start address memory A and an end address memory B, and the start address memory AVC stores the child address data above which indicates the πC start address for the accompaniment tone to be generated next. The end address memory BYC is stored for each accompaniment type, and the end address data indicating the read end address for the sequentially generated power rr hata sounds is stored for each accompaniment type G' as described above. It is written in u4U. (?:
] The start address memory A and the end address memory B are
~, accompaniment type designation data ASD is sent from the accompaniment selection switch circuit 20 as a static address designation signal.

Accompaniment fH, 'L! :lj'? When a specific accompaniment scale 'UA l)''4''6)k4 is selected by the constant data data D, 1jiJ start address address memory k'', L corresponding to f4'-Hatakari-1 determined by Jj-H. ? In accordance with the count output of the iJ start address address data counter 24, the ILC is sequentially read out and supplied to the adder 28, while from the end address memory B, end address data corresponding to the specified accompaniment seed () is read out. The signals are sequentially read out according to the four outputs of the address counter 24 and supplied to the comparator 30.

The chord 6 board 32 includes a plurality of 6's for playing chords,
Key press data indicating the pressed key is supplied to the chord detection circuit 34.

The chord detection circuit 34 temporarily stores the external data from the chord keyboard 32 and detects the root note and chord type of the chord based on the stored data, and detects the chord type including the root note specification data and the chord type specification data. Designated data C8D is sent out. The chord detection circuit 34 performs one of the chord detection operations depending on whether the mode selector switch 36 is set to contact a or b. That is, when the switch 36 is set to the contact aK stage, chord detection operation in the fingered chord mode is performed, and the switch 36 is set to the contact bK3 stage.
If a single finger mode chord detection is selected, a single chord detection operation is performed in the single finger mode.

In chord detection in fingered chord mode,
A chord that should not be generated is specified by simultaneously pressing a plurality of keys corresponding to a desired chord on the chord keyboard 32. For example, when you press the nail corresponding to the three notes C-E-G, the data specifying the root note "CJ" is sent as the root note specification data, the data specifying the root note "Ir-" as the 1ζ11 note type specification data, and the chord type "Ir-" as the data specifying the 1ζ11 note type. Data specifying "measure" is sent.

Illusion in single-finger mode chord detection,
The 11th chord, which is determined by 117 depending on whether one key is pressed or when multiple keys are pressed, is also of one type. In other words, when pressing the l weight μ), the chord type is “
'Major' is defined as '411, and the sound of the pitch name corresponding to the pressed Kuko (') is specified as the root note. Also, the plural ('
If you press λ, the root note will be specified by pressing r or the lowest note (or the highest note), v4, and the other keys, fL, fc, and the uncle of the key will be 0 椭 (white). The chord type is specified by (or Kuromi).

The chord latch circuit 38 detects the chord detection port F? according to each timing pulse TPTN. -34, the chord type designation data C8D is latched. Among the latched data, the root note designation data RT is supplied to the variable frequency divider 40, and the chord type designation data CT is supplied to the waveform data memory 42. Ru. The reason why the chord latch circuit 38 is provided is to cause the next accompaniment tone to be generated in synchronization with the timing pulse TPTNK when a key for the next accompaniment tone is pressed while a certain accompaniment tone is being generated. be.

The variable frequency divider 40 variably divides the system clock signal φ according to the root note foot data RT, and outputs divided output pulses corresponding to the root notes C, C...B, respectively. The frequencies of are controlled so that the frequency ratio to the adjacent root note 4iJ is 2'A2.

The R-8 flip 70 knob 44 is connected to each timing pulse T.
It is set according to PTN, and its output Q-“l
o makes AND gate 46 conductive. AND gate 46
When turned on, it supplies the divided output pulse from the variable frequency divider 40 to the read address counter 48 as the clock input CK.

The output address counter 48 is output from the variable branching unit 40 to A.
The divider force pulse provided through the ND gate 46 is
The address signal 'c is set so as to indicate an address value that changes at a rate determined by the frequency of the divider cover h and li.
IT-1, which occurs next, the carry pulse CO from the OR gate 50 or the timing pulse TPTN
So that it will be reset according to the K: It is on. The system is also 1
When the switch lO is turned on, the OR gate 50 outputs the first carry-out pulse CO and the first timing pulse T.
The first output signal "lo" is generated in response to the PTN.
After being reset in response to the output signal '1' of 'JJ', the AND gate 4 (the divided output pulse from i is
Timing pulse T of 2 'fr t]
Reset according to P'I'N, l'L, and the same number of words and reset operation thereafter. And 1 small fli+
At the end of the period, the He output address counter 48V2 is reset by the second carry pulse CO. Thereafter, the counting and resetting operations as described above are repeated in the same manner. It is sent out from the read address counter 48. The address signal is fed on the one hand to adder 28 and on the other hand to comparator 30.

The comparator 30 compares the end address data from the end address memory B and the address signal from the 100 output address counter 48, and when the two match, sends out a match output EQ. This coincidence output EQ resets the flip-flop 44, and in response to this reset, the AND gate 46 becomes non-conductive and stops supplying the divided output pulse to the read address counter 48. This i? -, the operation of the read address counter 48 (ie, address progression) is stopped.

This kind of stopping of the counting operation is performed by the next timing pulse T.
This continues until flip-flop 44 is set according to PTN.

The adder 28 adds the open address data from the start address memo IJA and the address signal from the read address counter 48, and the addition output is stored in the waveform data memory 42 as a waveform data read address (fourth Supplied as a number.

The waveform data memory 42 stores waveform data representing the waveform of the accompaniment note to be generated next for each of the above-mentioned yorona rojo stone) L classes and for each chord quiz 4σ. :r!Waveform data is one bar's worth of digital waveform data consisting of digital words representing sample values of the waveform for each accompaniment note.Such digital waveform data can be is recorded, the recorded signal is sampled at a certain sampling rate, and each sample value is converted into an analog/digital (A/D) signal.

Waveform data memory 411J: accompaniment selection switch circuit 2
When the accompaniment type designation data ASD is supplied from 0 as a static address designation signal, the waveform data to be read are accompaniment type designation data ASD and 1111 described in ``Ri''.
The selection is made in accordance with the sound type designation data CT.

When the play mode signal PLAY becomes "1" in response to the ON operation of the control switch 10, the waveform data memory 42
In this state, the selected l
' waveform data is read out in response to the AT signal from the adder 28. In this case, the reading rate is chord keyboard 3.
It is determined according to the root note of the chord specified in step 2.

Waveform data regarding the Jlli- and primary accompaniment tones read from the waveform data memory 42 are supplied to a data modification circuit 52. The data modification circuit 52 modifies the waveform sample values in order to make the waveform concatenation shape of successive accompaniment sounds into a desired shape, and the details thereof will be described later.

Waveform data relating to sequential accompaniment sounds sent from the data modification circuit 52 are supplied to a digital filter 54.

As mentioned above, since the reading rate of waveform data differs depending on the specified root note, the present invention basically performs musical tone formation using moving formants. Therefore, a digital filter 54 is provided to provide a fixed formant tendency, and by tracing the waveform data through this digital filter 54, the waveform 41'5 is slightly modified.

The waveform data for the sequential accompaniment tones sent out from the digital filter 54 are digital/analog (D/A
)? 4: Change the 17th I3F note to the Q circuit 56 and the analog accompaniment note OUT. And D/A
f'1'-commission signal OUT iJ sequentially sent out from the conversion circuit 5G: speaker 60 via the output amplifier 58
ni (((given) and converted to i'1' sound. Therefore,
&J-self ff (h ff) is played from the speaker 60.

f! r'-I sound generation t・) f production Here, F't'+ Referring to Figure 2, accompaniment sound generation y・
Describe 0 works [IfJ. The stored waveform in FIG. 2 is stored in the waveform data memory 42. r! (+For convenience, the first group of waveform data selected according to the accompaniment type designation data A, SD and the chord quiz designation data CT from the cultivated waveform data is converted into an analog signal). It is shown in converted form.

Waveform data P. , PI, P2... represent the waveforms of the rl'=Hata tones to be generated sequentially, and the waveform data U corresponding to each accompaniment note: from the rising edge of the accompaniment note to the next accompaniment note. There are a number of digit A words representing successive sample values of the waveform immediately before rising edge.

Such digital waveform data is an actual 11' sound with chords, arpeggios, and bass tracks (all digitally recorded!). There are eight things to do. When calling the digital 0, the root note is taken as an example + J' G, each accompaniment type 4U K: λ11 sound type is changed one after another, c 'f' = nail, and each accompaniment is stored in the waveform data memory 42. 9A9. +
The sum of the number of VC views for each i\Waveform data corresponding to the i type is stored.

The waveform of the 1゛6 tone indicated by the waveform data Po, Pip... may be a waveform of a single 1 or a waveform of a mixed sound. For example, in the case of a chord, a mixture of three tones that make up the chord are generated sequentially, but the waveforms]゛-taPo and P
l υ may all indicate the waveform of a chord, and the waveform data P2 may indicate the waveform of a mixed tone of the 11th note and the bass note. Also, in the case of an arpeggio, the chord is made by 4I;
r! 1, the second and third sounds are generated in a distributed manner, but the forming data P. and Pl are the waveforms of the first and second sounds, respectively? The waveform data P2 may represent a waveform of a mixed sound of the third note and the bass note.

i-j5, Shisara Denpo Setting Device 9: i: Return the same tempo as when recording at 14', \';J goromo.゛Additionally, the selection switch circuit 20 selects 4': f fixed Ban Hata kun i;
If you pick out a specific chord that features a root note, will it be a data memory meeting in the wave square? ,;, i4:; Memory wave Gosugi in Figure 2>
jJsu-2: '1' no (: 4 怀杉datab 3 capitals (selected to be exported).

f:i:J f',i:When switch 10 is turned on,
When the tempo oscillator 12 &) is set to the fixed tempo, the clock pulse T CL K is sent to Dy2 (C
One occurrence occurs as shown. Tempo counter 1 (1 for i:
The first carry pulse CO'%'b41= is executed in response to the J-first tempo clock pano L as if it were repeated. In addition, at the same time as this A, 81[ri output CJ-7'1'
All bits are set to 0, and the timing pattern memory 22 is selected in response to this, and the timing pattern corresponding to A/ξ for Niko KfQ is set to i'j, 2.
Timing pulse 'r r 'r as shown in 1%J
N(Db i'2 student 11j I/: Hl-ru.

The carry-out pulse Co of Jl, l, and Nenono and the first timing pulse TPTN are input to the address counter 24 at almost the same time, but since the reset priority is given as if they were advanced, the address counter 24 inputs the carry-out pulse Co of the first timing pulse CO of the ivy. , and the counting output becomes 1. Therefore, from the start address memory A, the waveform data P corresponding to the first fr/protrusion is read out. Start address data indicating the start address is read I'L.

Okay, the first carry pulse CO and the first timing pulse T P T N are input to the OR gate 50 (F,
are input at the same time, LIL is input to this, and OR gate 50
The first output signal "11" is generated. Since this first output signal "1" resets the read address counter 48, the last few outputs of the counter 48 become all the pits "0".

First timing pulse T P T N i,! , 71
Jtsu 7'70 Tsubu 44 is set to Sera I, Koo L (4: A N D game depending on the case) 4G or 211 is sent.　, t1 1st
O IJ according to the timing pulse T P T H
B latch li, 'jl l; valley 38 is Kawawa detection circuit 34
The sum fi type force f#"rj constant data C8D is latched. The data latched at this time includes root note designation data RT indicating the root note Gffi and chord type designation data CT indicating a certain chord type.

The edible frequency divider 40 selects the root note G& according to the root note specification data RT.
Generate a "divided output pulse" at the frequency corresponding to C, and
The read address counter 48 is supplied via the gate 46'e. The read address counter 48 divides the frequency-divided output pulse by JIi+the next number and sends out an address signal after the next number. Therefore, address signals are sequentially generated from the adder 28 so as to indicate an address signal increasing at a rate corresponding to the root note G from the read start address. Waveform data P corresponding to the first accompaniment tone is read out in one wave.

The waveform data read from the waveform data memory 42 is supplied to the D/A conversion circuit 56 via the data (I'f-positive circuit 52 and the digital filter 54, and the D/A conversion circuit E
The iS 56 generates the first accompaniment signal OUT. Then, the speaker 60 responds to this sound signal OUT.
The first accompaniment note is diced. In this case, if the first accompaniment note is a chord, a chord whose root note is G note will be generated.

Next, when the second timing pulse TPTN is generated from the timing pattern memory 22, the divisor value of the address counter 24 becomes l, and in response, the start address memory A generates the waveform data P. Start address data is read.

Further, after being reset in response to the second timing pulse TPTH, the read address counter 48 sequentially counts the branch output pulses "+" and sequentially generates address signals as in the previous time.

Therefore, from the waveform data memory 42, the waveform data P1 corresponding to the second accompaniment note is sequentially output at a rate corresponding to the root note G, and in response, the second accompaniment note is output from the speaker 60.
The accompaniment sounds are prominent.

After this, when the timing pulse TPTN is generated, the waveform data reading operation is performed sequentially in the same manner as described above, and the accompaniment sounds corresponding to the n1 waveform data Pt, PR, etc. I will bring it out.

When the reading of waveform data for one measure is completed, the tempo counter 1 (5&:12'''Li7[J's galley out pulse COk 6i・, address counter 24 and &
Jj address count 48f! : Reset. For this reason, for the next 1 small:'ill VC, the waveform data of phantom L6 for each 1st play 1j is sequentially outputted in the same way as described above. :The work is 9 times over, I do it. Therefore, the sounder 60 automatically outputs 1'l' = Hata Sougaro 3 at the same tempo as when recording.

By the way, as mentioned above, when you are playing the V automatically and playing the VC% sound, you can use the Japanese conical disk 32 to change the root note to the F note, for example, to other Japanese J, blasphemy designations such as -J-. If it is a shipkomono, then this) 1 constant o l Hf surname 1 corresponding sum 1 jji class 4) Ko constant data C8D specifies ;f11 廿 of the above Sen, and after Guhi j&
First timing pulse T P T N to J, 6 then I1
1 is latched into the latch circuit 38. This /C, the frequency of the minute Jid output pulse from the inner frequency divider 40 is 41 (compared to note F,
Change to j! tIIJ餉] is done. Therefore, note 1 in Figure 2
．． The waveform corresponds to the root note ゛, and the waveform is ``ho'' (then +i) at no rate.
When q is output, the accompaniment sound is started after the read data and IIK-. In this case, if the accompaniment is a chord, a chord whose root note is the F note is generated. If the chord type is also changed in the other chord designation operation, part of the waveform data to be extracted from the waveform data memory 42 is selected in accordance with the newly designated chord type.

Next, accompaniment sound generation operations with different address control modes will be described with reference to FIGS. 3(a) and 3(b). Figure 3 (a
) shows the operation when an address jump is involved, and this operation is only possible when the first cl'lJ variable tempo setting device 14 is set to a faster tempo than during recording. The second case is when a chord whose root note is a note lower than the G note is specified on the Japanese keyboard 32.

Figure 3 υ) shows the operation when the address progress is stopped, and such an operation is performed at 8B Z
This is the case when the tempo is set to be slower than the one at the time of recording with the K Tsukasa tempo setting tool.The second case is when the 1st note with the high note of G and C as the root note is specified in the chord Ken flE32. .

In the case of FIG. 3(a), for example, the waveform data P0
is read out to the end address, and the same goes for the next one. For this reason, the address Δ seen on the output side 1 of the adjusting device 28 is
In 15 minutes, the address will be changed to A33, and the waveform data corresponding to the changed address will not be output.

Therefore, the accompaniment tone signal PIO is a part of the attenuation waveform for each accompaniment tone.
%"It, PH1, PI3', etc. will be converted to Ill + 3ll. In this case, the waveform of the rising part of A1 will be generated as much as 4'], so ■ Negative deterioration will occur. It was around 11pm; it wasn't until 9pm.

On the other hand, in the case of ``7-'J of 3 pins [0] 3, for example, the waveform data P. fr: π1. to end address. When the output is output, the comparator 30 outputs the output EQ and resets the flip-flop 44 (L). The same applies to other waveform data Pl % p, % Pa, etc. Therefore, the address progression seen at the output side of the adder 28 is S Tl % S T2 ,b' r 3 will stop ()j% at the tongue part.Therefore, as the accompaniment 1!r signal OUT, the accompaniment note (M number P + o , P□, PH2
% Pll... will be generated sequentially.

In any of the above-mentioned cases of Section 3 (a) and (b), the frequency of the divided output pulse of the variable frequency divider 40 does not change by changing the tempo, so the waveform data The reading rate of F) does not increase, therefore, the pitch of F) live western music does not become sharper as the tempo increases by 1f.

In addition, the stop whistle for MEKIN Sho Kanade / ζ time & -XS system t
11 Operate switch lO gold on. Then, the tempo oscillator 12 and U/waveform data memory 42 are put into the disabled state VC71, and Atsushi's data b1. Output will be stopped. When number 1 is reached, automatic tj'#t stops. Further, the same operation as pIβ Aoi Tani is carried out in the same way for other Pi'-provisions for which #Sakai is selected by the selection switch circuit 20.

Data correction circuit data ((and - positive jilt j! i152 to 1-1-1
Amplitude control times as "ri"? 4'ijl north SH o L in each. 1 In this case, the timing pattern memory 22 (.

1, l"] As shown in 3441 people, several milliseconds'+I' for the timing pulse TPTNVc from the second scan to the fourth scan.
Jj・j o) I, (IIi, -jL +1M fi
l T iLm &j advance, te reduction start timing pulse EDPi The timing pattern for the stop to be generated is 1. Self 1. +, 1 bite C- bite.

i) iノ,・+ii like 1'(U'mbomaru) stopped JV, 1 go ζ' is the 4th [ne: VL, r): like, 1' is the first field. Hata On 1.-1 P1o made the envelope J)
21i + 1:, 1 glue/rming pulse T I) T When the time is 2111th Western-style party according to N.'l
rj bow PI? There are times when this occurs.

In this way, i, i:; 4j smell), 2 '1il
1 m + at sample 1111 indicated by the waveform data first read in response to the F-th timing pulse TPTN.
Tumble 1 shown by the waveform data that appeared on J14
If the 7 bows with the toy are too thick, clicking may occur ◇. The data modification circuit 1ili852 is provided to prevent the occurrence of a click 1.

The amplitude control circuit constituting the data modification circuit 52 starts multiplying the waveform data and the attenuated envelope data in response to the reduced whiz timing pulse EDP preceding the second timing pulse TPTN.

This multiplication process is performed by, for example, a bit shift method to reduce the evening waveform sample value by %, and is stopped by the arrival of the second timing pulse TPTH. As a result, the first accompaniment sound signal Plo is forcibly attenuated according to the envelope E, thereby preventing the occurrence of a click sound. This kind of forced reduction is 2
The same applies to the waveform data corresponding to each accompaniment tone after the intended one. Note that the attenuation control may be performed by detecting the amplitude level and increasing the attenuation rate as the amplitude level increases.

As another example, the data correction circuit 52 is configured with an interpolation circuit. This interpolation circuit always has a register for storing past seven sample values, and calculates each timing pulse TPTN by calculating the following equations (1) and (2).
14 sample values are corrected from the occurrence of .

In these equations (1) and O' (2), %AJ, Bk and C11J are all sample values near the waveform joint J-J' as shown in Figure 5, and AI to A7 are before the joint. The sample value of "h Bl x13.4" is the sample value of the continuous self-recovery, and ci/%+C, is the corrected sample value.In addition, in the fifth region, the horizontal axis indicates time t, B, ~''14 and c8~c0. are not shown.

According to the above formula (1), for example, the corrected sample value C8 is
Sample value person 1~A? The force between the sum of and the sample value B1 ++
It is obtained by dividing the 3v value by ↑1-, which is 41, and the correct sample @c? is the sample value A8
It is obtained by dividing the sum of sample values B1 to B7 by 8. In this way, 01
~Cyit is obtained by averaging eight sample values before and after the second and third J-J'.

Also, according to the above equation (2), for example, the corrected sample value C
8 can be obtained by dividing the sum of sample values B1 to B by 8, and the corrected sample value C14 can be obtained by dividing the sum of sample values B13 and Bl4 by 2. It is something that can be done. Like this 06~C,,
/d is obtained by averaging a gradually decreasing number of sample values so as to gradually reduce the influence of past sample values.

When the interpolation circuit described above is used, as shown in FIG.
By connecting the hills in a series of five shapes, it is possible to prevent the occurrence of click sounds.

In the 11th and 1st embodiment, the automatic accompaniment is repeated every bar, but it may be repeated every other desired section, such as every 2 bars.

Also, a timing pattern memory 22, an address memory 4
ii"+: 26 and waveform data memory 42 are eventually stored in RAM (Random Access Memory), and external recording 11 such as a floppy disk or magnetic tape is stored.
sea lion, ':', ()2 ka・ra memory 22, memory 1 place 2
6 and memory 421/koro'1. You can also make Zoo's requisite command data more benevolent.

2nd:J2jl:'+ 人i 6I;1lld-, this shows the automatic accompaniment device 1'I- according to the second embodiment of this J, which is played at the same 1114th minute as in Fig. 1. k'', same () 1 This '(? is included in the entire issue, n2'a': ill explanation, the entire explanation will be omitted.

146 figure Nore J: j+“, Shishi, three 'i's: ifi
゛qAll there are 1-ru. The first special Ml:J: , when the tempo variable range becomes large, the waveform deletion J becomes large, and the sound 1 deteriorates twice as much.The entire tempo variable range is divided into multiple parts. , memorize waveform data for each tempo range 1"
This is what I decided to do as a first-year student.

The second 'i7 sign is i: (all fF 7t'5's addition λ
If the circle is thick, the Mi part will be large in l'JIJ of the waveform.9
In order to solve the problem of sound quality, the sound quality is divided into multiple ranges, and the waveform data is stored and played back in each range 4F and 'F. It is.

The third feature is that when recording multiple accompaniments in a mixed form, for bass notes with long sustain times, a large portion of the waveform is deleted9, and the sound quality deteriorates. This is because the waveform data is stored and played back separately from the albejo.

The tempo range determination circuit 64 is connected to the variable tempo setting device 14.
The tempo set in is changed to the predetermined tempo ff
It is determined whether it belongs to 'I'tl, 'tiu old L If' or 'I', and tempo range designation data TRDi indicating the determined tempo range is sent out. -f
311, if the tempo variable range is 60 to 200 in terms of the number of quarter notes per minute, set this position to 60 to 99.1.
00-149. Three dempo ranges gl of 150-200 (
It can be divided into i, I, and negative.

The first memory "VR + output thread 66A is for the first chord and arpeggio note, and the second memory/readout system (36
1 to 13. There is a C for bass sounds. Memory of these 1st and fC+2 -H,) In the threads 66A and 66B, blocks with reference numbers i, l-127+] where rAJ or i:rBJ are in the month λt ] Blocks with corresponding reference numbers in c2J and Josen's (C has the same function)
It is something that

In the first storage/readout system 66A, the timing pattern memory 22Ai,',It)'records a timing pattern representing the first-order 711v/albejo sound generation timing in each accompaniment 6i if, I'i 4j;1. In this case, the program/'jf4 designation data ASD from the accompaniment/selection switch circuit 20 is used as a standard address designation signal. From the timing pattern memory 22A, select phantom 1. accompaniment 1j
;Sequential timing pulses T P T corresponding to f habits
N 11 ifi Ten Ten Counter 1 (N Ti') is sent out in response to the number output CNTi' from the Ten Ten Counter 1 (J).

Address B's own λ, ・, ：, : 11', : 2(・A
o, l iii 1 (address memory A2 and end address memory Dai are provided. It has second and third storage parts Aat%Aat and Aas.-As an example, the range of change in root pitch is C.
, C+...B, divide it into three ranges, and set the first range as C, D+,
The second range is set to E-G, and the third range =, G'
l) to B.

The first storage unit Aas has three storage blocks corresponding to the above-mentioned tempo ranges ■, ■, and Start address data for chords and arpeggios that are to be generated sequentially with the root note being the note in the range of C is stored for each rF = performance I class. Second storage section A
a2 corresponds to tempo range 11 and 3, respectively.
Each memory block contains start address data for chords and arpeggios that are to be generated sequentially at a tempo that belongs to the corresponding tempo range and with the root note of C that falls in the second range. It is stored for each type of accompaniment. The third storage unit Aas has three storage blocks corresponding to tempo ranges 11 and 2, and
Each memory block has a corresponding tempo g: 12 with a tempo of 6 and a note belonging to the third range as the root note Jl [
, the start address data for the next note/albejo 11 to be generated is stored for each accompaniment VC.

The end address memory Ba is the above-mentioned 8;: 1, 2nd
and the 1st, 2nd, and 3rd registers corresponding to the 3rd range.
It has storage parts B J , B a2 and Bas, and each
, has three storage blocks corresponding to the above-mentioned tempo ranges 1, II and 3, respectively. Each memory block has the same starting address memory Aa (7) as described above.
)ζ, O; End address data for one note/albejo note is stored.

The chord latch circuit 38A converts the chord type designation data cSD from the chord detection circuit 34 into a timing pulse TPTN.
Among the latched and ILfc data, the root note specification data RTI is latched according to the variable frequency divider 40A.
The n and fll sound type designation data TI supplied to the 1j region discriminating circuit 68 are supplied to the waveform meter 42A.

The range determination circuit 68 determines whether the root note indicated by the root note designation data RTI belongs to any of the first to third ranges mentioned above. It is designed to send out R8I. The range designation data R8I is supplied to the address storage device 26A and the waveform data memory 42A.

In the address storage device 26A, start address data and end address data to be read out are selected according to the range specification data PS1, the tempo range specification data TRD, and the accompaniment type specification data ASD, and the selected start address data and end address data is stored in the address counter 24.
A is read out according to the count output of A. For example, the range specification data PSI indicates the first range, the tempo range specification data TRD indicates the tempo range ■, and the accompaniment type specification data A
Assuming that SD indicates a specific accompaniment type, from the memory block corresponding to the tempo range I in the memory section Aat of the start address memory Aa, the memory block corresponding to the specific r゛p 獅1(ii 力′1) 11 At the same time the start address data is read out, in the first entry 1 of the end address memory Ba, the accompaniment type data of Q"r constant is transferred from the memory block corresponding to the tempo range I falling in (section I3a+) to 4. The corresponding end address data is output.

Waveform data memo! J 42 A iJ, the aforementioned 21≦1
, the first, second, and third memory sections A12 and A13 corresponding to the second and third ranges, respectively, are sounded, and each memory section is set to the above-mentioned tempo range I. , 1 and 3, which are arranged on opposite sides of each other.

2I↓] Note 1; In the 71st part All, each memory block is V, i is in the tempo range corresponding to jS1-, and the note that is in the first range and is in the first range is set as the root note.
c should occur; llb? Waveform data representing the waveform of the ``j'' arpeggio is stored for each peak I and in each Japanese name type 42y. In the second storage unit A12, each storage block has a tempo B4 within the corresponding tempo range and 5! Waveform data that determines the waveforms of chords and arpeggios that are sequentially generated with notes belonging to the S2 range as root notes are stored for each sound group and for each chord type. In the third memory unit AI3, each memory block has a tempo that corresponds to the corresponding tempo range and a note 'that belongs to the third tone range' is sequentially generated as a root note. The waveform data representing the waveform of the 11th note and arpeggio note is the name of the famous FP play 4jl and each chord type 4.
U remembers it.

In the waveform data memory 42A, according to the pitch range designation data PS1, the 11th note type designation data CTX, the tempo range J effect foot day 2 TRD, and the t'to play music 1 designation data ASD. When the waveform data to be read is selected,
The selected Lfc waveform data is read out in response to the address borrowed from the compensator 28A in the same manner as described above with respect to FIG. For example, the range specification data Psi indicates the entire first range, the 11th note type specification data CTI indicates a specific chord type, and the tempo range specification data TRD indicates the tempo range I.
, and the line/performance type specification data ASD indicates a specific banhata board type, then the specific chord type and Waveform data corresponding to a specific accompaniment ai group is read out at a rate corresponding to the designated root note. in this case,
[First] When only the tone type is changed from C major to C mica, for example, on the tone keyboard 32, the waveform data corresponding to the newly specified chord quiz is read out from the same memory block.

The waveform data regarding the Jlli' fourth-order pentagram/albejo tone read from the waveform data memory 42A is supplied to the adder 72 as waveform data 0UTII via the data correction circuit 52A and the digital filter 54A.

In the second storage/readout system 66B, the timing pattern memory 22B stores timing patterns for successive bass sound generation timings for each introduction type g=iI. Performance selection switch circuit 2
0 to accompaniment recording designation data ASD are supplied as static address designation signals. From the timing pattern memory 22B, the selected 71' ft performance f
! Sequential timing pulses T P T corresponding to Ji class
N12 is sent out in response to the tll high output from the tempo counter 16.

The address storage device 26B includes a start address memory Ab and an end address memory Bl)f, H. The start address memory Ab includes first, second, and third storage units Ab corresponding to the above-mentioned I, second, and third ranges, respectively.
1, Abz, and Ab3i, and each storage section has three storage blocks corresponding to the aforementioned tempo ranges 11 (1) and (11), respectively. Each storage block stores start address data for a bass tone in the same manner as in the start address memory Aa described above.

The ending address memo IJ B b is the 1st. 2nd and 3rd
It has first, second and third memory sections B b+ , B bz and Bbsi corresponding to the tempo range 1. 3 that corresponds to It and ■ respectively.
It has two -memory functions. Each storage block stores end address data for a bass tone, similar to the case of the start address memory Aa described above.

The chord latch circuit 38B converts the chord type designation data C8D from the chord detection circuit 34 into a timing pulse TPTN12.
It latches according to the latched data, and the root note specification data RT2 is of course Ji, JB, and N40.
B and it1 right1. Lr Kukui J) 1 constant data CT2 is waveform data memory 4.2
Give B an offering.

'1i area discrimination time F;'r 706 zu 1, 4t+iiL indicated by root note designation data RT2 or 1) iJ description and 1st-4
It distinguishes in which of the ranges 1'1 and 1'1 the h-·i is to be played, and the system transmits the ranges 7H7 and 2f indicating the at and fc ranges. Sound range C) C fixed data 1) S2 is the address storage section 'ii2613 and O.
-Nami [and is provided to data memory 4.2 B.

Address 1. ←゛C device 26B inputs 1, note 1, specified data PS2, tempo range specified data TRD, accompaniment f
According to class iii specified data ASD, L should not be overwritten (
i'' start address data and end address data are selected, fc [jil start address data, end address data, rFIe is output according to the division output of 1 address counter 24B, and l'L is output. Example 2: The range specification data PS2 indicates the first range, the tempo range J to constant data TRD indicates the tempo range ■, and the accompaniment type specification data ASD! Assuming that the type of accompaniment is 14',
In the first register t of the start address memory Ab, the start address data corresponding to the six constant accompaniment types is read out from the memory block corresponding to the tempo range ■ in the section Ab+, and at the same time, the start address data corresponding to the tempo range ■ in the section Ab+ is read out, and at the same time, the start address data corresponding to the tempo range ■ in the section Ab+ is read out. Storage part l3
End address data corresponding to a specific F-to-Hata type is read from a storage block corresponding to the tempo range (■) in bt.

The waveform data memory 42B has the above-mentioned first, second and third waveform data memory 42B.
The corresponding first, second and third storage units B11. B12 and 13i3 are designed, and each memory section has three memory blocks corresponding respectively to the aforementioned tempo ranges I, II, and II.

Storage part B111/l of QZ 1: In each storage block, a waveform of a bass note to be generated sequentially with respect to a root note falling in the first range at a tempo belonging to the corresponding tempo 1; Hole waveform data is stored for each percolation type force '1 and for each chord type.

In the second storage section B12, the tempo is set to L in the tempo range 11ij corresponding to each storage block, and the second B
In the area h, in the root sound: l! It is the waveform data of the waveform of the λ that is generated sequentially and the wave of λ is also written every 1'1V, and 1λ;i is written for each name type. . In the third notation iλ゛・, part B13, in the sixth notation 1λj, the block has a tempo that is L in the corresponding tempo range and a root note that is Δ in the 2゛3 range, and J
The waveform data that breaks down the waveform of the paste salt to be generated sequentially is stored in each accompaniment type 4v and is recorded for each note type.

In waveform data memo') 42B, range specification data PS2
and 1. According to the user type specification data CT2, the tempo range specification data TRD, and the tempo range specification data ASD, etc., the r and form data to be output is selected. The data is output in response to the address signal from 11 HID 28 B to the same water as described above with reference to Figure 1! do. For example, range specification data P
S2 indicates the first range, the wing sound type jI number specification data CT2 indicates the /1.1 constant 51IJ piece type, the tempo range specification data 'll'RD indicates the tempo range I, and the Banhata type specification. Assuming that the data ASD represents l[Te definite b ν product class, the tempo range I in the first storage unit Bll is
Waveform data corresponding to a specific chord type and a specific accompaniment type are read out from the memory block corresponding to the specified root note at a rate corresponding to the specified root note. In this case, if you change only the chord type on the chord fa board 32, for example from C major to C mica, the waveform data corresponding to the chord type specified in Qi will be generated from the same memory block.
Sign.

The waveform data related to the sequential bass notes read from the waveform data memory 42A are supplied to the adder Xa as waveform data 0UT12 via the data correction circuit 52B and the digital filter 54Bi.

The adder 72 receives waveform data 0UTII and 0UT12? :
The signal is increased and applied to the D/A conversion circuit 56.

Therefore, the D/A conversion circuit 56 sequentially sends out accompaniment tone signals OUT as in the case of FIG. Then, from the speaker 60, a WX next accompaniment signal 0UTK:
In response, an eye movement accompaniment sound is produced 2t.

In the embodiment of FIG. 6 described above, the waveform data memory 4
As for the waveform data stored in 2A and 42B, the first
As in the case shown in the figure, it is possible to use digital waveform data that shows sample values of the continuous waveform for each accompaniment note from its rising point P to just before the rising point C of the next accompaniment note, but like the bass note, For sounds that occur infrequently, digital waveform data indicating sample values of the waveform from rise to decay can be stored in memory for each sound generator, and a stop code can be written to read the waveform data. It may be possible to reproduce the entire image. In this way, it is not necessary to store waveform data corresponding to the focal state in the memory, so that the memory capacity can be reduced.

FIG. 7 describes the base sound generation operation when digital waveform data indicating the sample values of the waveform from the rise to decay of the famous pace sound is stored in the waveform data memory 42B as the base sound waveform data.] It is for the purpose of

In the waveform data memory 42B, range specification data P S
2. Waveform data S representing the stored waveform as shown in FIG. 7 according to the 11th note type designation data CT2, tempo range designation data 'l' RD, and introduction type designation data ASDK
It is assumed that R, SR, . . . are selected to be read. In FIG. 7, waveform data 0UT12 and S, , S
2, s, . . . are shown converted into analog signals for convenience.

When the flip-flop 44B is set in response to the first timing pulse TPTNI 2, the read address counter 48B increases at a rate corresponding to the specified root note in sequence as follows: 'ff:;1':. select the address signal. Therefore, the waveform data S1 corresponding to the first bass tone is sequentially read out from the waveform data memory 42B, and the data corresponding to the first bass tone signal SoK cannot be sent out as the waveform data 0UTi2.

After this, address 4 from read address counter 48B
When the value of No. H matches the end address value indicated by the end address data from end address memory Bb, comparator 3.
OB generates coincidence output EQ and flip-flop 44B
f: Reset. As a result, the output address counter 48B's expansion operation is completely stopped, and the address progression seen by the output I11 of the adder 2813 is l'! ,' As shown in FIG. 7, it stops during J interval ST1 when the next timing pulse TPTN'12 occurs. This translation suspension period S
By not outputting data tfJ' from the waveform data memory 42B during T, the silent state from the end of the decrease in the first base sound signal S11 to just before the rise of the second base sound signal StZ is reproduced. oyster

Next, when the second timing pulse TPTNI 2 is generated, waveform data S corresponding to the second bass tone is generated from the waveform data memory 42B in the same manner as described above.
, JEj is then accented, and as waveform data OUT 12, the data compared to LL% second bass tone No. 43 S□2 is sent out.

After this, the L, fij'L output address counter 48B stops counting operation as described above, and then
This continues until the 3rd timing pulse T P T N 12 is generated between ST2 and J1'. Then, the waveform data S is read out in response to the third timing pulse TPTNI2, and data corresponding to the signal Sss is sent out from the third base as the waveform data 0UT12. Thereafter, the operations described above are repeated.

Therefore, speaker 607) - number SL, base number SL
1, S12 % s13 ... The base sound power supply corresponding to the first female is released.

FIG. 8 shows an automatic rl-
This figure shows a performing arts device, and the same parts as in FIG.

Features of the device shown in Figure H18: 1. Depending on the type of accompaniment pattern, accompaniment sounds may be generated at a constant cycle. This is achieved by simplifying the components of the waveform data output circuit using frequency dividers, counters, etc.

The tempo frequency divider 74 consists of a counter that divides the frequency of the tempo clock pulse TCLKt from the tempo oscillator 12, and the tempo frequency divider 74 consists of a counter that divides the frequency of the tempo clock pulse TCLKt from the tempo oscillator 12.
While the signal TP3 is generated, the carrier pulse C0fJi is generated when the 1ttj control switch lO is turned on and at every bar. First series timing pulse T
When PI corresponds to a quarter note [1゛rev. J l-1',
The timing pulses TP2 of the second series are sequentially generated 2'L at a time interval V+'5 corresponding to an eighth note. The third sequence of timing pulses T P 3 ki, 11y intervals h', corresponding to the 16th H mark, are sequentially generated and I.

The selector circuit 76 receives f')'-play f! from the accompaniment selection switch circuit 20. 1st according to ij class designated deday ASD
One of the -443 series of timing pulses TPI to TP3 is selected and transmitted.

The troublesome timing pulse TP sent out from the selector circuit F+176 acts on the sequential timing pulse TPTN explained in Figure H41, and is OR.
The gate 50, the first address counter 78, and the data correction time f'-';

BiJ start address counter 78
The first carried pulse C generated when the AL is turned on
After being reset in response to O, sequential timing pulses TP are counted and start address data is sequentially sent out.

The resetting and counting operations similar to those described above are repeated every time the second and subsequent carry-over pulses CO are generated.

In the address signal AD for reading waveform data from the waveform data memory 42, its upper pin (UB) is constituted by the start address data from the start address counter 78, and its lower pin (LB) is constituted by 'read address counter 4.
It is configured by the address signal from 8. Therefore,
Waveform data relating to successive accompaniment tones are sequentially read out from the waveform data memory 42 at readout start timings synchronized with each successive timing pulse TP and at a rate corresponding to the designated root note.

Unlike the device shown in FIG. 1, the device shown in FIG. 8 does not have a readout stop control section, so it is only possible to speed up the recording and lower the readout rate. Therefore, the waveform data stored in the waveform data memory 42 is digitally recorded with the tempo as slow as possible and as the root note 'f:B'.

In the above embodiments, a digital word indicating the sample value of the waveform was used as the stored waveform data, but instead, a digital word indicating the difference in amplitude for each sample point of the waveform that matches the sample value was used. and the evening waveform (ij
The number may be played back.

As described above, according to the VCl ``Emit'', waveform data representing the waveforms of successive accompaniment tones is stored in the memory, and the waveform data is transmitted at a constant rate of 44' for each accompaniment tone, ji, 7.
．． Since it is made to output H, it is possible to reproduce the progress of the accompaniment and/or subtle differences in sound quality in the 139th series with other musical instruments, resulting in a good live performance effect.

Also, since the waveform data kuie is output by changing the output rate of 4TJVCC with different root notes of chords, it is a good idea to store all the waveform data related to a particular root note in the memory. The number of memory 61 (1) is small.Furthermore, since the timing to start reading the waveform data regarding successive accompaniment sounds is determined according to the successive timing pulses generated according to the variable tempo, even if the tempo is changed, The pitch of the reproduced accompaniment sound does not change, and the waveform portion corresponding to the rise of the accompaniment sound is not deleted.Therefore, it is possible to reproduce the accompaniment sound with high fidelity, and the live performance effect is further improved. .

When data modification means for controlling the waveform connection shape is provided, no click sound is generated between accompaniment sounds that are successively reproduced in sequence, and deterioration in sound quality can be avoided.

When waveform data is stored and reproduced by tempo range, tone range, or envelope length, accompaniment sound can be reproduced with even higher fidelity.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an automatic accompaniment device according to a first embodiment of the present invention, and FIG. 2 is a time chart 1 to 3 for explaining the accompaniment sound generation operation of the device shown in FIG. a) and (I)) are time charts for different address control modes. , (+)) is accompanied by 7' Dresou 1 Kan 1 stop; 14j combined, Figure 4 shows 4! -Ii'
2US 5-1 shows an example of sample value correction using an interpolation circuit.・Figure 237 is an unillustrated block diagram of the automatic male/female 4J h by J, which shows the base generation operation of the device in Figure 6.
The time chart of the end, ♂8
Automatic banshun by isu r11f3: Indicates ''5-Block diagram. 12...tempo release 1; effect:'-:, 14...possible 1
Tempo setting tube device, 16...tempo counter, 2
0... Banhata running selection switch circuit, 22... Timing pattern memory, 24... Address counter, 26...
-Address storage device, 28...addition 3'i'? :;
i, 32...Japanese chord λ叡, 34...Chord detected I
j'F5-40...Variable frequency divider, 42...Waveform data l A 11 A O go to IJJ-7' +Knob q
1 West -) l ζ 910. Gita correction circuit, 56
...D/A conversion u f3, (i 4...Tempo range discrimination times do ij, f56A...Fang II sound, arpeggio sound memory, tf"l'M output system, 66B...pace Notes for sounds 1. Intention/reading system, 63. '7o... Range cliff 4' 811 circuit. Patent applicant: Nippon Gakki Seisakusho, Shikisha representative patent attorney
Satoshi Izawa 2nd Figure TCLK u---- 4th Do 1

Claims (1)

[Scope of Claims] 1. (A storage means for storing waveform data representing the waveform of an accompaniment sound to be generated next to a3M; (b) a variable tempo setting device; (C) timing for generating accompaniment sound after Jm) (d) chord designation means; (e) each timing pulse is generated (f) address generation means for sequentially generating an address signal j to indicate an address value that changes at a rate corresponding to the chord specified by the chord specifying means;
(g) reading means for reading out waveform data regarding the 171st accompaniment tone at readout start timings synchronized with the J-th timing pulses and in accordance with the address signal for each accompaniment tone; (g) reading from the storage means; an automatic accompaniment device comprising: means for sequentially generating accompaniment tone signals in accordance with waveform data for forming sequential accompaniment tone intervals I/c; 2. In the automatic accompaniment device according to claim 1, the storage means stores a plurality of groups of waveform data respectively corresponding to a plurality of chord types, and accompaniment to be generated sequentially for each group. The chord specifying means stores root note specifying data indicating the root note of the specified chord and chord type indicating the type of the specified chord in response to the chord specifying operation. The address generation means includes means for determining the rate according to the root note designation data, and the readout means transmits a group of waveform data to be read from the storage means. A self-ban geisha f1 characterized by comprising means for selecting according to the chord type designation data.
゛゛ケ. 3. In the automatic accompaniment device according to claim 1, the pulse generation means includes a pattern memory that stores a timing pattern representing the sequential accompaniment sound generation timing, and a pattern memory that stores a timing pattern representing the sequential accompaniment sound generation timing, and a a tempo clock generation circuit that sequentially generates tempo clock pulses at a frequency corresponding to the tempo; a counter that counts the tempo clock pulses and reads out the timing pattern from the pattern memory; Automatic accompaniment low H whose 114th characteristic is that the timing pulse is sent out.
1 yu. 4. In the automatic accompaniment device described in Claim No. ig4, the pulse generating means sequentially generates tempo clock pulses at a frequency corresponding to the tempo set by the variable tempo setting device. The automatic accompaniment device is characterized in that the tempo clock generation circuit that generates the tempo clock pulse is likened to a frequency divider that divides the frequency of the tempo clock pulse, and that the frequency divider transmits the sequential timing pulses. . 5. In the automatic accompaniment production set forth in claim 1, the reading means reads and reads waveform data for each #playing note.
an address memory for storing address data indicating an iJ start address; an address counter for reading out address data from the address memory by counting the timing pulse; and the storing means in accordance with the read address data and the address signal. 6. In the automatic accompaniment apparatus according to claim 1, the reading means reads out the waveform data for each section. a first address memory that stores rjiJla address data indicating a reading start address of the accompaniment tone; a second address memory that stores end address data indicating a translation end address of waveform data for each accompaniment tone; at1/scunk, which reads start address data and end address data from the first and second address memories, respectively; and reads waveform data from the storage means in accordance with the read start address data and the address signal. An automatic accompaniment device characterized in that it is provided with means for reading out the end address data and the address data that have been read out, and means for controlling and stopping the completion of the "J LE TE YOKI 1" work by comparing the read end address data and the address data with each other. 7. As set forth in claim 1, ii7. In the automatic F-to-female device, the pulse generating means sequentially generates pulses at a frequency corresponding to the tempo set by the variable tempo setting source jjj, fL, /. and a frequency divider that divides the frequency of the tempo clock pulse and sends out the sequential swimming pulses, and the reading means includes
A counter that counts the timing no.
6, and a means for reading waveform data from the storage means. An automatic accompaniment device characterized in that the waveform data stored in the storage means is represented by a digital word that assigns a sample value of the waveform for each accompaniment tone. Range In the automatic accompaniment device of 5F31 described in item 1, the waveform data stored in the storage means is continuous waveform sample values from the rise of each accompaniment note to just before the rise of the next accompaniment note. An automatic accompaniment device characterized in that the automatic accompaniment device is made up of digital words representing 1O0.In the automatic accompaniment device according to claim 1, the waveform data stored in the storage means includes each accompaniment note 4 and its 1. An automatic accompaniment device comprising digital words representing sample values of a waveform from rise to decay. il, (a) I @ storage means for storing waveform data that determines the waveform of the accompaniment sound to be generated next; (b) variable tempo setting device; (cl /i!! next accompaniment sound generation timing) (d) a pulse generating means that generates the next timing pulse Ii!Jt in accordance with the tempo set by the variable tempo setting j1, iff, (,), respectively; Fixed hand 11 and (e)
Valley timing pulse is generated! (f) address generation means for sequentially generating address signals so as to indicate an address value that changes at a rate corresponding to the puhi chord specified by the chord specifier Jn;
=: Next, the pHq g sound [IJ:I zigzag waveform data is read out according to the address signal at the rv output start timing which is rotated by the sequential timing pulses, and for each accompaniment ψB. (g) Receive the data from the above means to the next accompaniment sound, and the waveform indicated by the received data will be in the desired shape. (11) a data inhibit means for modifying a part of the received data and sequentially transmitting the received data;
A self-voiced IJ performance device comprising means for generating sequential accompaniment sound signals in accordance with waveform data regarding sequential accompaniment sounds. 12. (a variable tempo setting device; (1)) determining which of a plurality of predetermined tempo ranges the tempo set by the variable tempo setting device falls within; and (C) a plurality of groups of waveform data corresponding to the plurality of tempo ranges, which accompaniment should be sequentially generated for each group and λ. a storage means for storing a representation of a sound waveform; and (d) pulses that generate sequential timing pulses instructing each successive tr-smell generation combing according to a tempo set by the variable tempo setting device. (e) chord designation means; and (f) an address signal for indicating address candy that liquefies at a rate corresponding to the chord designated by the chord designation means each time each timing pulse is generated; t1111 The next generation address generating means selects the waveform data of -rib' that should be output from the first stage of the store bow in accordance with the specified data of the tempo range 11, ! l:K B'A waveform data for the sequential accompaniment tones 11t't' to the next timing pulse [1) υ at the readout start timing on the i' side and for each accompaniment note υ 611 without reading according to No. 2.
(b) Means for emitting the next accompaniment tone signal in accordance with the waveform data that is concave to the next accompaniment tone from the storing means; Stop no 1 atrophy tV f, +,. 13, (al Yuya tempo setting device, +1)) 'I11-cho/l effect determining means, (C) this first
1 廿4) '1 Specified by the fixed means The root note of the Jt saw chord is predetermined. Multiple 'a J4! (cl) 7): It corresponds to the range of J4jj FA. storage means for storing waveform data of a plurality of groups representing waveforms of accompaniment tones to be sequentially generated for each group; and (e) sequential timing pulses for respectively instructing sequential accompaniment tone generation timings. (f) a rate corresponding to the root note of the chord designated by the chord designation means each time each timing pulse is generated; (g) selecting a part of the waveform data to be read from the storing means in accordance with the range specifying data; (11) reading means for reading out waveform data regarding sequential accompaniment tones belonging to a part of the accompaniment tones at readout start timings synchronized with the sequential timing pulses and in accordance with the address signal for each accompaniment tone; (11) the store; An automatic accompaniment arrangement is likened to means for sequentially generating accompaniment sound signals in accordance with waveform data corresponding to sequential accompaniment sounds read from the means. 14 (a) Variable tempo setting position; Φ) J11 note designation means; (c) Relatively short envelope rl' to be sequentially generated = first waveform data for storing the waveform of Hata tone. (d) a tempo set by the variable tempo setting device, which stores sequential timing pulses for respectively instructing sequential accompaniment sound generation timings with relatively short time intervals; (e) a first pulse generating means that generates a timing pulse in accordance with the first pulse generating means; The first one that sequentially generates address signals to indicate the address value.
(f) reading out waveform data regarding successive accompaniment tones from the first storage means at readout start timings synchronized with successive timing pulses from the first pulse generation means and for each accompaniment sound; a) a first readout means for reading data in response to an address signal from the first address generation means; and σl) a second pulse generating means that generates sequential timing pulses in accordance with the tempo set by the variable tempo setting device, each of which instructs the generation timing of successive accompaniment sounds at relatively long time intervals. , (i) every time each timing pulse is generated from this second pulse generating means, the address signal is set to indicate an address value that changes at a rate corresponding to the chord of 5V[(2t specified by the note specifying means). U) a second address generating means that sequentially generates waveform data regarding accompaniment tones from the second storing means, and a readout start in synchronization with the Nj first-order timing pulses from the second pulse generating means, respectively; a second readout means for reading at timing and in response to an address signal from the second address generation means for each accompaniment note; The accompaniment tone signals are sequentially generated according to the waveform data to be played, and the accompaniment tone signals are read out from the second storage means.
Next, the self-weight IJf is provided with means for generating an accompaniment sound signal.
'I': Kanoichi Gioki.