JPS581192A - Electronic musical instrument - 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 electronic instrument equipped with an automatic musical instrument tube,
Only when the tempo of manual performance on the keyboard is within the specified osis with respect to the standard tempo! The tempo of automatic performance is controlled in accordance with the actual performance tempo.

2. Description of the Related Art Conventionally, electronic musical instruments have been known that automatically generate musical tones or display keys pressed to assist manual performance using a keyboard. Furthermore, in this type of electronic musical instrument, it has already been proposed to control the tempo of automatic performance (musical tone generation or key depression display) so as to follow the tempo of manual performance.

However, with this type of tempo control method, if the keys are pressed too quickly or too slowly during manual performance, or if the keys are pressed incorrectly, the automatic performance tempo may change unnecessarily, interfering with smooth performance practice. Ketei friend.

SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide an electronic musical instrument that prevents the tempo of automatic performance from changing unnecessarily.

This electronic musical instrument follows the manual performance tempo and controls the automatic performance tempo tII when the manual performance tempo is within a predetermined range relative to the standard tempo; It is characterized by controlling the tempo of automatic performance so that it does not change beyond a predetermined limit f [(maximum value or minimum value) t.Hereinafter, an embodiment shown in the attached circular will be described in detail.

The first section shows an i-path configuration of an electronic musical instrument equipped with an automatic performance device according to the first embodiment of the present invention.

Music 110 has a recording medium tOa of 1 fathom pasted in its lower margin sK magnetic chi, and nine musical score data corresponding to the musical score contents are recorded on the recording medium 10%.

The musical score data reading control circuit takes musical score data 'kWl' from the recording medium IQa, and transfers the melody data to the melody data memory 14 and the accompaniment data to the accompaniment data memory 16 for storage. - In order to control the storage operation tIilI, the write address signal WAD, write command signals WT1 and IT, and address selection signals MBL and M8 are sent out. Further, the row data reading side 1141 circuit 12 supplies tempo data 'I'ID indicating a reference tempo from the recording medium XOa to the tempo control path 131C.

Both of the memories 14 and 16 are composed of 81M (random access memory), and address signals are supplied from the corresponding selector circuits 18 and 16. The selector circuits and I operate selectively in response to the address selection signals M81 and BsK, respectively, and when the selector H circuit is selected, if the selection signal MB1 is 'lI, the control manual 8
The input cam is selected when B1 is 111, and the selection signal B1 is %QI.
The control input 8B is set to 11 by the TK Rage inverter 18a.
Select input B with 1-. In addition, the selector short circuit addition is the selection signal M8! If it is Kagame II, the control manual input 8B selects the input cam at %1#, and if the aI selection number B1 is %Q'l, the side koji input 8B selects the input B at 11I for the inverter addition 1. do.

Insert and set the Hata-1O into the receiving port of the theta tea cake included in the music score data reading control circuit, and perform the data reading operation tea.
When the memory 14 is started, the memory 14 enters the write mode in response to the write command signal W〒1゛, and the memory 14 changes from the selector i path ratio which is in the state of selecting the input cam in response to the selection signal W〒1゛. An applied address signal Wp is supplied. Therefore, nine melody data are written in the memory 14 in a seven-orbit format as shown in FIG. 2, corresponding to the execution of 100 melody scores.

That is, the melody data written at this time is expressed by a combination of the melody ft 8-bit key code IC and the 8-bit length code LNG, and as illustrated for each middle chord oIIi note name al. The upper 2 bits are the identification code, the lower 2 bits are the octave code, and the remaining 4 bits are the note code.As shown in the example for each length code LMGFi, the upper 2 bits are the identification code, and the remaining bits are the octave code. It is a note length (note length) code. A rest is expressed by using all six bits other than the identification code pit of the key code IO as ``Ol''. Then, the end code 731g of 8 bits tII is written into the write grade memory 14 of the last melody day. Note that the upper two bits of this final code FFM8 are also an identification code.

When the writing of the final code FIB is completed, the memory 16 becomes the write amount - code in accordance with the write command code 'TIT', and the memory 16 becomes the write amount - code.
At 716, an input address signal WD is sent from a selector which is in a state of selecting an input cam in response to a selection signal B3.
is supplied. Therefore, accompaniment data corresponding to the accompaniment (chord or bass tone) progression of music #i IW is written in the memory 16 in a format as shown in FIG. In other words, the accompaniment data written at this time is based on the chord to be generated by 8.
Bit key code KO and 8 bit length code LNG
As shown in the example for 0 measure (011), each key code Xa has the upper 2 bits as the identification code, the lower 2 bits as the chord type code, and the remaining 4 bits as the root note code. ing. Here, the chord type code is "00" for major, r for mica.
OI J, if it's a 7th, it's ``10''. Also,
As shown in the example for each length code LNGijz diagonal note in the accompaniment data, the upper 2 bits are the identification code, and the remaining 9 bits are the identification code.
The 6 bits are the note length code.

After a series of data read/write operations as described above, the start switch 8 of the h1 start/stop l1lj control circuit n is activated.
Turn on W to operate the melody data entertainment circuit and the accompaniment data entertainment circuit. That is, when the start switch 8W is turned on, the on-signal distribution circuit differentiates the rising edge of the start switch 8W in synchronization with the system clock signal φ, and converts it into a start signal Δ8TRT. And start signal 18TRT#i! Since the -87 lip is set to 70, the play mode signal PLAY consisting of the output Q-%11 is sent from the flip-flop. At this time, since the input signal of the inverter & is %QI, the output signal %II of the inverter n is supplied to the ND gate A via the OR gate 34. For this reason, the MND game+36 outputs the playback signal PLMY=
When x' l I is generated, it becomes conductive and the clock signal φ
will be supplied to the address counter.

When the address counter 38 is reset by the start signal Δ8TRτ, the address signal RmD1 for the first ejaculation of the eel is reset.
is supplied to the selector @@1H as input B. At this time, the selector 1 path 18 selects the input B based on the trace selection signal S1z'Ql, and supplies the first read address signal Rm D1 to the memory 14. Therefore, the friend key code data corresponding to the first melody sound is read out from the memory 14, and the upper 2 bits of the data are sent to the identification code signal expansion code detection circuit 40 and the remaining 96 bits of the melody key code (octave code). and note code) signals are respectively supplied to latch circuits timed by a clock signal φ.

The identification code detection aII&S generates a key code detection signal MKt- in response to the first key code data from the memory 14, and the latch circuit 42Fi generates this key code detection signal Ml.
Latch the first melody key code signal accordingly.

And the melody key code signal M from Latch Circuit Co., Ltd.
KO is supplied to the display member.

On display section I, melody key code signal MKC3
A display control circuit 811 (Q
If the enable signal IN is supplied in response to the input,
The light emitting elements in the light emitting element group provided along the key arrangement between the keyboards are selectively controlled to light up to visually display the key to be pressed. If the first melody key code signal MIO indicates the note name 01 as in the example shown in FIG. 2, the good light emitting element corresponding to the 01 key lights up to instruct the key to be pressed.

As described above, when the nine-press key display starts corresponding to the first melody sound, when the counter picks up the count signal φ, the number of keys corresponding to the first melody sound is output from the memory 14 in the same way as t11. The code data is read out. Of the read data at this time, the upper 2 bits of the identification code signal are supplied to the identification code detection circuit, and the remaining 6 bits of the melody code length code signal are supplied to the latch-controller timed by the clock signal φ. be done. Then, the identification code detection signal MLf is generated according to the first length code data from the memory 14, and the latch circuit wr
54 latches the first melody note length code signal according to the length and length code detection signals ML. Also, since the length code detection signal ML at this time is supplied to the inverter 32, the inverter! The output signal is %QI, which causes the counting operation of the counter to be temporarily stopped.

Thereafter, at a time delayed by #2 bit time of the clock signal φ from the time when the start signal Δ8TRT is generated, the two-stage gate 7 lipfrog group timed by the clock signal φ generates the restart signal Δ8TRT'. . This restart signal No87RT'll1oll gate 34
Since the MMD gate 36 is made conductive through the MMD gate 36, the counter again counts the clock signal φ from the MMD gate. On this ninth note, from the memory 14, the key suite data and length code data corresponding to the 2nd @O melody sound are S order Kml! issued, and the identification code is detected in accordance with this AM40
ti key code detection scar number M! and length code detection signal M
L is generated sequentially. Key code detection signal M at this time
l is a latch circuit 58 similar to this from Latch Circuit Co., Ltd.
When the 11th melody key code signal is transferred, the 211th melody key code signal t is also latched by Kj Tsuchi Tsumugisha. Further, the length code detection signal ML at this time is sent from the latch circuit 8 to the latch circuit 60 which is the same as the latch circuit 8.
In addition to transferring the melody code length code value number, the melody code length code signal t latch is applied to the 2nd line, 1st path, 54fC2, and an inverter like #1! The counting operation of the counter is temporarily stopped.

The melody key code signal corresponding to the 211th melody sound from the latch time wr42 is supplied to the display section under MKO, and the display member displays a mourning key press corresponding to the second melody sound as before. Ru. Also, at this time, the melody key code IIJ) M KC' corresponding to the first melody sound from the 22nd Tei Ruo Edict is supplied to the automatic melody sound signal forming circuit, so that this Do signal PL! The enable signal IM is output in response to the input of the trigger switch 8W3 from the MMD gate which is conducting.
is supplied, the melody code signal MKO'
A melody sound signal is electronically synthesized in accordance with the melody signal, and is supplied to a speaker 68 via an output amplifier 66. Therefore, the first automatic melody sound from the speaker hammer is required one tone later than the key press.

On the other hand, a nine melody note length code signal MLG corresponding to the first melody tone from the latch circuit ω is supplied to the tempo control-M13. The tempo control circuit 13 receives a melody key code signal MLG and a melody key code value MKO, as will be described later with reference to FIG.

Tempo clock signal TOL based on key code signal KKO, tenvotator TKD and performance mode signal PLAY.
and read control signal NI! It generates the first melody note length code signal MLGK and generates the first readout control signal NEXT when the key corresponding to the second melody note is to be pressed. This first read control signal NEXT
is supplied to the MU ID gate via the ON gate 34 from the MUND gate connected to the length code detection signal ML, so the counter counts the clock signal from the MUMD gate A. resume. Therefore, the key code data and length code data corresponding to the third melody note are sequentially read out from the memory 14, and the latch circuit group and C receive the second melody key code signal and the third melody key code signal, respectively. The key food signal is latched, and the 2IIth melody note length code signal and the 3-th melody note length code signal are loaded into the latch circuits ω and 4, respectively. Therefore, in the automatic melody sound signal forming circuit wI62, a mourning melody sound signal is formed corresponding to the second melody sound, a good key press is displayed on the display member corresponding to the third melody sound, and the tempo control circuit 13 A second operation of generating a second read control signal is performed based on the second merotie code length; - code signal. Then, the above-mentioned electric operation is repeated in the same manner, so that the automatic key press display and the
The melody tone is automatically played one tone later than the indication.

Note that the final code data is read out from the memory 14 after i&, and in response to this, the identification code detection circuit OFF generates the final code detection signal νN. This final code detection code I
Since the M7 lip flop 130 is reset, the performance mode signal PLAY is no longer 10I, and only a series of data reading from the memory 14 is completed.

Key switch path 82 #i This includes a large number of key switches each linked to a large number of keys of the keyboard group, and the key code signal KKO indicating the pressed key is sent to the manual performance sound signal forming circuit section and the tempo control circuit described above. It is designed to be supplied to the roadside. Manual performance f signal forming circuit 84 #'i Key switch - In response to the key code signal [10] from the wl zone, a melody sound signal corresponding to the pressed key is electronically synthesized and output to the speaker via the output amplifier. 68. For this reason, a manually played medi sound is also required from the speaker hammer.

In this case, if a manual performance practice is performed with a keyboard group, efficient performance practice can be performed while listening to the above-mentioned nine automatic performance sounds and/or while viewing the automatic key press display by the light emitting element IF52.

When practicing a performance such as Jin, automatic accompaniment of chords or pace sounds and/or automatic rhythm accompaniment as described below can be used as appropriate.

In the accompaniment data output circuit 26, when the aforementioned start switch 8W is turned on, the input signal to the inverter becomes %O.
Since I, the output signal of the inverter circuit = 'l'#i0
It is supplied to the MND gate beauty via the R gate.

Therefore, when the start switch SW is turned on and the performance mode signal PLAY=%l# is generated, the MU M
A clock signal φ is supplied from the D gate (1) to the address counter.

When the address counter 92#i is reset by the start signal J8TE RTK, the first read address signal RA
D, is supplied as the selector circuit 163)K input B. At this time, the selector circuit is in a state 11 in which the p input B is selected by the selection signal Bzm%Og, and the first read address signal HAD is supplied to the accompaniment data memory 16. Therefore, from the memory 16, the middle -
The code data is read out, and the top of it! bit l
The 1m+=z- code signal is supplied to the identification code detection path 94, and the remaining J16-bit accompaniment key code (sum 1l-11 separate code and root note cotra signal are supplied to the latch circuit % which is timed by the clock signal φ). Ru.

Identification code detection circuit 94#i generates a key code detection signal Mtt in response to the first key code data from the memory 16, and 2-touch circuit 96Fi generates the first accompaniment key code signal 2 in response to this key code detection signal MX. Tsuchi.

After this, when the counter n counts the clock signal -, 1
Similarly to the eleventh time, nine length code data is read out from the memory 16 corresponding to the first accompaniment tone.

At this time, of the O read data, the upper 2 bits of the identification code signal are supplied to the identification code detection circuit axis, and the remaining 6 bits of the accompaniment note length code signal are supplied to the latch path 98 which is timed by the clock signal φ. be done. Then, since the length code detection signal Lt is generated in accordance with the first length code data from the identification code detection path 94Fi memory 16, the latch circuitry converts the first accompaniment note length code signal into the length code detection signal. The signal is latched according to the program LK. The length code detection signal at 0 is supplied to the Lli inverter 86.

For this reason, the output signal of the inverter (%OIK), O
The ND gate 90 is made non-conductive via the R gate blade.

Therefore, the counting operation of the counter 92 is temporarily stopped.

This class, the aforementioned Anzu start signal j87R? ' makes conduction through the OR gate 881 and the ND game) 90, so
The clock signal 92 again counts the clock signal φ from the clock signal 90. During this rounding, the key code data and length code data corresponding to the second accompaniment tone are sequentially read out from the memory 16, and in response to this, the identification code detection circuit detects the key code detection signal MX and the length code. Signal error Ltl1 occurs next. At this time, the key code detection signal is from 2 tsuchi circuit % to Oa) tsuchi circuit 10 in the same manner as this.
0 and transfers the first accompaniment key code signal and causes the latch circuit 96 to launch the second accompaniment key code signal. Also, at this time, the first accompaniment note length code signal is transferred from the length detection signal LFi edge circuit μs to a two-touch circuit 102 similar to this, and the second accompaniment note length code signal is wrapped in the latte period. Then, as in the case before, the counting operation of the counter is temporarily stopped via the inverter 86.

As a result of the above operation, the first accompaniment key code signal C is sent out from the latch circuit 100, and the first accompaniment note length code signal MLG is sent out from the latch circuit 102. This first accompaniment note length code signal table LG is then supplied to a comparison circuit 104 and compared with the count output of the tempo counter 106. Here, the tempo counter 106 is reset by the start signal No. 8TRTK from the OR gate 108, and then the tempo control circuit 13
Tempo clock signal from! Since the ratio 11H path 104 counts the OL, when the count value of the counter 106 reaches the value corresponding to the note length indicated by the first accompaniment note length code signal MLG, the ratio 11H path 104 generates the -1 km IQ. .

The coincidence signal at this time is reset to counter 106t via 108t, so counter 1
06 is the tempo clock signal TEOL again after the reset.
Add the number of stitches to 1. Further, the coincidence signal IQ is supplied from the length code detection signal L to the MD gate 90 via the OR gate 88, and the counter 92 is supplied from the MD gate 90 through the OR gate 88. The counting of the clock signal φ is restarted. Therefore, the key code data and length code data corresponding to the third accompaniment note are sequentially read out from the main memory, and the second accompaniment key code signal and the third accompaniment note data are read out to the rat f-circuits 1oO and %, respectively. Accompaniment key code No. 1 is latched, and the 211th accompaniment note length code signal and the 3rd accompaniment note length code signal are latched in the 2/1 path 102 and the 211st accompaniment note length code signal, respectively. As a result, the latch circuit 100 sends out the 211th accompaniment key code signal Xa, and the latch 1 path 102 sends out the second accompaniment note length code signal IaG. In circuit 1, note length determination for the second accompaniment tone is performed. Then, as the above-mentioned operation is repeated in the same manner, the accompaniment data is read out one after another from the memory 16, so the accompaniment key code area IO is sent out one after another from the latch enclosure. Ru. Note that the data translation from the memory 16 is completed when the final data is read from the memory 14, and the counter g2 receives the performance mode signal P after the final data is read from the memory 14.
Lm! When %O'KN, stop the sidewalk at the same time as the counter.

The accompaniment key code signal IC sent from the accompaniment data reading circuit as described above is the automatic accompaniment tone signal forming circuit 1.
12K supplied. Automatic accompaniment sound signal forming circuit 112
Fi performance mode signal Lm! When the enable signal RM is supplied from the MID gate 114 which is conductive in response to the turning on of the sound generation select switch gv, an accompaniment tone signal is generated based on the accompaniment key code signal MKO and rhythm selection data (not shown). It electronically synthesizes chord signals corresponding to multiple chord constituent notes as accompaniment tone signals,
It is designed to generate a bass tone signal that matches the chord and rhythm to be generated. Then, the transmission timing of each accompaniment sound signal from the automatic accompaniment sound signal forming circuit 112 is 1111 ml in conjunction with the rhythm according to the banki timing shingo whip from the rhythm pattern generation circuit 116. 9, circuit 112.

These accompaniment sound signals are sent to a speaker 68 via an output amplifier 66.
supplied to Therefore, automatic accompaniment sound is also required from the speaker head.

Rhythm pattern generation circuit 116 #i tempo control circuit 1
In addition to the above-mentioned accompaniment timing signal, a rhythm pattern signal RF is generated in response to the tempo clock signal TE from 3, and this rhythm pattern signal RP is generated.
is supplied to the rhythm sound S circuit 118K. The rhythm sound source circuit 118 drives a suitable rhythm sound source according to the rhythm pattern signal RP to generate a rhythm sound signal, and this rhythm sound signal is also supplied to the speaker motherboard via the output amplifier 66.

Therefore, automatic rhythm sounds are also required from the speaker group.

Figure 4 shows an example of the display and performance operation of the above-mentioned electronic musical instrument, where (At indicates the musical note progression, (B) indicates the key press display timing, and (0) indicates the melody and accompaniment. The automatic performance timing is shown. According to Kame4eAK, it can be clearly seen that the key pressing precedes the automatic melody sound by lt. □Next, referring to Fig. 5, the tempo control - path The configuration and movement of the ribs are determined.The manual tempo setting circuit 120 selects tempo data that is appropriately set by manual operation and indicates the nine standard tempo.
It started to be supplied as a human cam to Road 122, and
The selector path 1220 inputs the tempo data from the register circuit 124 for storing the tempo data supplied as serial data 0 from the above-mentioned score data insertion control IDI. ID is provided in the form of parallel data. The selector time %122 is set by the select switch 8W to select the signal βm or BB (*If it is set to 1g, if it is Jij'l#, the tempo data from the manual tempo setting circuit 120 will be sent, and if it is 8Bm'l#, it will be the tempo data from the manual tempo setting circuit 120. Register Road 124
The tempo data from the selector circuit 126 is supplied as human power B.

The above-mentioned start switch BY and f are turned on.
Redemption PL! is % (because it is y, MuyDgu) 1
28 output signal Fi%QI, this output value %Q#
The output signal of the inverter 1300 which inputs is 11#. As selection 471 1B for selecting input B of selector circuit 126#i, tempo data as input B is supplied to comparator circuit 132 after turning on of inverter 130 meter switch 8W.

The clock signal [1134] generates a high speed clock signal .phi.1 and a slow clock signal .phi.1, which has a frequency several times -3. These clock signals φl and φ
The signals are supplied to the zB selector circuit 136 as human cam and B, respectively. The selector circuit 136 receives the output q of the R-87 liplock 138 as a selection signal B, inverts this output q\t with an inverter 140, and receives a good signal as a selection signal 8B.・Before turning on, the performance mode signal PLAY
=%Q# t-Shin name inverted by inverter 142%1
1 through OR gate 144 to 7 rig 7 o tu 138
, the O clock signal φ1t- is selected as the input B according to flBm%l# and the counter 14
Supply to 6.

Counter 146 Clock signal φ! from Fi selector circuit 136! 1ll circuit 13 which counts the counting output and compares the counting output.
2. Therefore, comparison circuit 1
The controller compares the tempo data from the selector circuit 126 with the count output from the counter 146, and generates a match signal when the two match. This coincidence signal IQFiD-7 lip 7 o tube 148 slightly la! Since the counter 146 is reset after the delay, the counter 146 counts the clock signal φ again after the reset. and,
When the count data of the counter 146 matches the tempo data from the selector 126, the match signal 1q is generated again, and the 0111b operation is returned to <9 in the same manner. this#
Since then, 4ll No. 1q at -1 will be periodically generated from the comparative cod path 132 in accordance with the reference tempo. The signal generated in this way is sent to the MAND gate l (111) after the start switch is turned on.
Output (1 is 6 at tII, so this output signal =
111) is sent out as a tempo clock signal TCL via the MMD gate 152 which is conductive.

In this way, before the start switch [1 is turned on, the tempo clock signal! Since the OL is generated with a frequency corresponding to the standard tempo, automatic 9 rhythm tones are required at the standard tempo to overcome the speaker problem described above. Therefore, the player only has to turn on the start switch SW in order to match the tempo to such an automatic rhythm sound and start playing.

When the start switch 8W is turned on, the performance mode signal PIIm! is activated as described in 1Ilr. becomes 111. This signal PL! (2) %lI cancels the counter 156 via the inverter 154; Counter 15 at this time
6 O output signal %Q#Fi conducts through the inverter 158 (MD game) 160, so the counter 1
56 is a MU MD game) Translation control signal MB2 from 16G
It is 11Kt that can be counted. Here, the counter secretion I
If you count 2 pieces of i reading system am number 1 x te, the output signal is,,
%1tt occurs, so ★ unta 15
6 is signal M Tobi! The output signal of the iD keg-12B is 69 in %QI, and the selector 1 path is 12.
6 continues to supply the tempo data corresponding to input 1 to the soft 1 path 132.

Although the flip 7o knob 13B is reset by the performance mode signal PLm Yt%1', it remains in the reset state until the first key is pressed, so the selector circuit 136 IIi input corresponds to nine. ptsuk value number φS
Continue to send out.

Furthermore, even if the performance mode signal PLAY reaches %1M, the output signal of the inverter 162 will not become slz until the comparison circuit l@ becomes input cam = input B, so it will not change to slz)
152 #i Continue to send out the tempo clock signal TOL in response to the reference key according to the secondary key.

Therefore, the counter 166 outputs the performance mode signal PLm! s
+*'l# inverter 16B and OR gate 17
After the reset is released via 0, the tempo clock signal 'rOL corresponding to the reference tempo is counted as the number of stitches, and the counting output is supplied to the comparator circuit 164 as an input cam. Comparison circuit 1
64 C) As input B, a melody note length code signal MLG corresponding to the first melody tone is supplied at the same time as the first automatic medley tone is generated. Therefore, the comparator circuit 164 compares both cams and Bt-, and supplies the output signal 111t to the inverter 162,
When it becomes MU-B, the output signal cylinder %ll is set to MU-D gate 172.
．． 174, 176 and 178, and the output signal -11 corresponding to M=1 causes the R-8 tree 70 to reset the tubes 138 and 180.

By the way, the performer listens to the automatic rhythm sound required at the standard tempo, and if necessary, corresponds to the first melody sound, and after watching the well-pressed key display, the first automatic melody sound is generated at the same time as the first melody sound. Press the key that corresponds to the melody sound. In the case of Jin,
The key code signal IIO corresponds to the first melody fK and is a friend, and the middle-food signal MKO corresponds to the second melody tone and is 9, so a comparison circuit that receives both signals XXO and MKO as inputs. 182 does not generate a discrete signal IQ.

After this, the comparator circuit 1@ outputs the output signal m% corresponding to Mu mK.
l#1 is generated exactly when the key corresponding to the second melody note is pressed at the end of the duration (note length) of the first melody note, the key code signal KKO is generated as the second melody note. Since it is compatible with fK, the comparator circuit 18
2 Generate #i match signal signal. At this time, the OR gate 184 inputting 5Ot to the key code signal detects the key press corresponding to the melody sound of 2 Homare 1 and outputs any key on signal MKOm%lJ. conduction. The IQ signal IQ from the comparison 11M182 is sent out through the MD game) 186 t-, and is further differentiated 1g1 through the OR gate 188.
#190 is supplied.

The output signal of the differential 1 path 190FiOR gate 188 is differentiated at the rising edge to generate the first key-on signal KOM. This key-on signal [01 is ORed through the MD gate 176.
112 K is supplied, and in response, the 011 gate 192 sends out the first successive control signal MINT.

Incidentally, when the melody need signal MKO indicates a rest, the rest detection circuit 194 generates an output signal =%1#, and supplies 172K to the MD game. At this time, the output signal of the □AND gate 172 is #1iKAjiD
18B).

Since the control signal mgr! is used, the control signal mgr! is generated.

On the other hand, is the first melody note length code signal MLG the first successive control signal 11IAx? In the period up to the point in time when , the counter 196 counts the frequency divided output pulse tube from the variable divider circuit 198, and outputs the counted output to the t selector circuit 200 as input B to the ratio soft circuit 202 and the foam. are respectively supplied as input cams. In this case, the minute M1 circuit 198 receives the clock signal φ.

is divided by a frequency division ratio of 9 corresponding to the note length indicated by the first melody note length code signal MLG, and the divided output pulse is supplied to the counter 196. The frequency dividing circuit 198 is provided to increase the frequency division ratio for long notes and to make the number of clock pulses t - the number of clock pulses of one note tooth 9 the same for all notes.

As the input B of the ratio soft circuit 202, the selector circuit 122
Lower limit tempo data M which is 0.5 times the tempo data from
XM is supplied from the lower setting circuit 16, and
As input B of 204, upper limit tempo data obtained by multiplying the tempo data from selector circuit 122 by 1.5 is supplied from upper @ setting circuit 208. And comparison 1 road 20
4i Compare the input cam and B to correspond to M≦BK, and supply the output signal N%1g to the MliD gate 210, and compare the input cam and B, and output the output signal when M≧B. lol
x'l' is supplied to the meeting MD gate 21G. Therefore, the MMD gate 210 supplies the output signal 11' (212K) in response to the comparison circuit z2 generating the output signal 11' corresponding to M≧BK. *
let In this way, the output signal of 210 =
Generating 111 means that the manual performance tempo is within a predetermined range with respect to the reference tempo.

As mentioned above, the K111 minute i1@1'IO generates the first key-on signal Ion at the time of pressing the 2111th O key in keeping with the standard tempo, so this II KON is transmitted through the MD gate 212. R-87 lip flop 21
4't set F. And this 7 Lip Flock 2
Since the output Q and %l# of 14 are supplied to the selector as the selection signal aB for selecting input B, the count output of the counter 1360 is supplied to the latch times @216g via the selector circuit 200, and the first reading In response to the control signal 111, a two-touch H path 216 is entered. Immediately after this latching time, the counter 196 is reset in response to the first read control signal MIXTE, and the divided output pulses from the frequency divider 1 circuit 198 are counted again in the 9th class. 9, first O read control number ymz''riOR gate 17
Since the counter 166 is reset through 0, the counter 166Fi resets Ovk and again counts the tempo clock signal TeOLI. Furthermore, the first read control signal 3
11C]l[TE resets the return flop 214 via the D-7 lip 70 knob 21B.

The above is an operation when the key pressing timing corresponding to the 211th melody note is well suited to the standard tempo and is scattered at the timing when the 211th key should be pressed, but the key pressing is too early. If the key is not pressed and the key is not pressed, the operation will be as follows.

First, cases in which the key is pressed too quickly will be explained separately in case 1 and case 2, as shown in FIG. This is a case where the key-on signal [01 is generated before the count value of the 7th l#i counter 1660 differs from a value that is 0.5 times the maximum count value N corresponding to the note length. In this case Kti
, the key-on signal KOM from the differentiating circuit 190 is passed through the mnD gutka corresponding to the m<B from the ratio V circuit l@ and conducted by the next output signal snow'lI.
Set 0 knob 13B. At this time, the output 1βII of the 7 lip-flop 138 is supplied to the selector circuit 136 as the selection signal 8, so the selector 1 path 136
Fi high speed clock signal phoenix selection will be sent.

Therefore, the counting speed of the counter 146 increases and the frequency of the tempo clock signal TE CL increases, so that the counting speed of the counter 166 also increases.

In addition, the Keyon Gogo KOMFi flip-flop 180
Since the t-set is made, the output Q111 of the 7-rig 70-tube 180 is transferred to the M-M via the D-7 lip 70-tube 222.
It is supplied to D gate 178, making it conductive. After this, the comparison path 164 outputs fI corresponding to M=B.
When %II is activated, this output signal=1=-II is sent out as a read control signal 111 through the 1mmIID gate 1-8 and the OR gate 192tP. 1, the gravity signal from the ratio IIR channel 164 at this time is removed.

By setting the clip 70 knob 1380, the selector circuit 136 selectively sends out the low speed clock signal -3.

The friend read control signal 111 generated in this way! Company T counter 198 is reset, but from this reset #
The counting output of the counter 196 is compared as the input cam.
02 and lower limit tempo data Ml as input B.
compared to summer. The key-on signal [011 is generated by the hook, so it's B, so Hikino Komaji! o2 supplies the output signal -%l#l corresponding to the output signal B to the MD gate 224, making it conductive.

Therefore, when the key-on signal 10M is generated, this signal [01 is turned on to the R-, a flip 7 quadruple 226t- via the MMD gate 224t-. At this time, the 07 Rig 70 Tub 2260 output Qm%II is supplied to the selector circuit as the selection signal 8m for selecting the λ cam, so the selector circuit value is the lower limit tempo data MIMtJ! as input A! selected and supplied to latch path 216.

Therefore, the latch circuit 216 Fi bladder output control signal EXT
The lower limit tempo data MIN is latched accordingly. At the same time, the read-only # signal mmxτ resets the counter 166, so that the counter 166 counts the tempo clock signal TOL again after being reset. Tempo clock signal in this case? Since the shift flip-flop 138 is reset by the output signal corresponding to MU;B from the comparator circuit 164, OL is generated based on the low-speed clock signal φ.

Next, case 2 has a counter 1660 as shown in FIG.
The count value is my father-in-law! This is the case where the key-on signal toM is generated when a value between 0.5 and N is reached.

In this case as well, the flip-flop 138 is set according to the key-on value KO fan, so the tempo clock signal!
It is the same as case 1 that the MltllL number of OL is high. Furthermore, the method of generating the read control signal MERIT is also the same as in case 1. However, read control signal MI
The data latched in the latch 1 path 216 in response to the signal X is different from the case 1, and is the count output of the counter 1%. This is the output signal from the ID gate 210 as described above when the key-on signal KOM□ is generated! -%l#(, because it occurs.

Next, as shown in case 3 of FIG. 6, the count value of the counter 166 is ``Fain and Father!'' A case will be described in which the key-on signal KOM is generated when the key-on signal KOM should be different from a certain value between 1.5 and O. In this case, when the count value of the counter 166 becomes summer, the output signal of the comparator circuit 164 corresponding to MUK becomes %QIK, so the output signal of the NMU IID gate 150 becomes %OIK, and from MUYD gate 152 The sending line of tempo clock No. 4Ii TOL is stopped. For this reason,
The counter 166 stops counting when the count value is reached, and the count value does not increase beyond y (in Figure 6, the koji with a count of 0 or more is a, og, 1, and 'C' as shown above). At this time, the output signal corresponding to M, , B of the ratio soft 1 path 164 becomes 11t, and this state is maintained while the counter 166 is stopped.

After this, the count value is wing! If the key-on signal ION is generated before reaching 1.5, this (!) KON will be disabled.
The translation control signal xmxte is sent out via the D gate 176 and the OR gate 192. 1*.

Between the output signals 111 from the MliD gate 210 is MMD
Since the gate 212 is made conductive, the key-on signal KON is connected to the 7V pfp2 via 212 t-.
Set 14. For this reason, the counting output of the counter 196 is supplied to the latch circuit 216 via the selector circuit 200, where the KW output 11J signal is output! It is latched according to T.

Next, as shown in Case 4 of the 6th garden, the count value of counter X66 is summer! Let us now consider the case where the 4-key on value code [OM] is not generated when it should have reached 1.5. In this case, as in case 3, when the count value reaches violet, the counter 166 stops counting. And the count value is mx
When it is time to reach 1, 5, the comparative 1st body receives the counting output of the counter 196 as the input cam and the upper leg tempo □ data Mm! as the input B. Based on the comparison with MU>B, an output signal %lI corresponding to MU>B is generated. This output signal wr,
'l' MID gate 174 and OR gate 19
2 as the read control signal MRXT, while causing the R-87 lip 70 knob 228 to be set. Then, the output Q of this 7-bit 1 flopper = %1# U
Since it is supplied to the selector circuit as a selection signal SO for selecting input C, selector circuit 200 selects upper limit tempo data M as input O and supplies it to latch circuit 216. For this reason, the latch path 216 output control signal MBX corresponds to the upper limit tempo data V
Latch.

After the first readout control signal MIAXT is generated from 192 as described above, a melody note length code signal MLG corresponding to the melody tone of the second category I is generated, and a melody key code signal MEO is generated. A sound corresponding to the 311th melody sound is generated. Then, when the performance ``4'' hits the appropriate tuning and presses the key corresponding to the 3@@fD melody note, I
ii In the same manner as described above, the 211th #value number MIX on the reading side
Ding is generated. In this case, if no key is pressed before the count value of the counter 166 should reach 5, the second read control signal M11. 1 is generated in response to the large output signal port %lI corresponding to the MU>B from the KTIJ comparison circuit 4.

At this time, the selector circuit (9) sends out the lower limit tempo data MIli, the count output of the counter 196, or the upper-kuma tempo data MX depending on whether the key press timing is early, appropriate, or late, so the latch 1 Output data from the selector enclosure hole is latched onto path 216 in response to the second read control signal. Also, at this time, the output data in front of the selector circuit is supplied as a human cam to the averaging circuit 230, and the # latch data from the latch circuit 216 is supplied as input B to the latch circuit. This average u path 230F performs an average process of (M+B)/2 on the single person cam and B and supplies it to the latch circuit m.

Damn it, 57fl! 1*232d, the average data from the average path (3) is latched according to the Z% readout control value number MIX, and is provided as an input cam to the selector @@12B. This is 10, which was established in order to prevent this.

On the other hand, when the 211th read control value number MIT is generated, the counter 156 generates the output signal ww'lI. This output signal = 111 is made non-conducting via the inverter 158 and is supplied as a selection signal S for selecting the output signal S.

In this case, instead of the tempo data corresponding to the reference tempo from the selector circuit 122, the selector circuit 126 receives 2 times! The average data from 21% Zl12 is selected and supplied to comparison circuit 132.

When the average data from the latch 1ai 6232 is supplied to the comparison circuit 132, the number of tempo tarokku gN TOLQ techniques is determined according to the average basket of the past two manual performance tempos, and the automatic Tempo of performance (sound collection generation or key pressed display) ij w It is possible to follow the tempo of the near performance! is controlled. However, in this case, the tempo is tight! E IjII is not performed unrestricted, but is performed only within a variable range of the number of j1 strokes of the tempo clock signal T0.1. i.e. the tempo clock signal? The highest frequency of OL is the high speed clock signal φ
The lowest value is determined by Otori and the lower limit tempo data MIM, and the lowest value is the low-speed clock signal φ and the upper limit tempo data MIM! Therefore, the tempo of automatic performance is also determined by the highest and lowest Il#L numbers corresponding to the highest frequency and lowest Il#L number of the signal TOL, respectively.
It is controlled to follow the tempo of manual performance only within the range between the highest and lowest values.

As described above, according to the present invention, the tempo of automatic performance is controlled by following the tempo of manual performance only when the tempo of manual performance on the keyboard falls within a predetermined error range with respect to the reference tempo. Because of the fc, the following excellent effects can be obtained.

11) It is possible to prevent the tempo of the L automatic performance from increasing abnormally if the key press timing is too early.

(I pressed the key too late /G was too slow, the key was not pressed 1
If this occurs, the automatic performance will not be stopped and will continue at a very slow tempo.

(3) Since the tempo variation range for automatic performance is widened, liKs who practice performance with automatic performance (musical sound generation or key press display) will not have their practice hindered by insensitive* tempo fluctuations. This will improve your practice efficiency.

[Brief explanation of the drawing]

Fig. 91 is a block diagram of an electronic Qin-〇 according to a further embodiment of the present invention, Figs. 2 and 3 are diagrams showing the formats of melody data and accompaniment data, respectively, and Figs. 1g4 (4) to (0).
5 is a diagram for explaining the display and playing operation of the electronic appliance, 5th FIA is a detailed circuit diagram 1 of the 0 tempo control circuit of the electronic appliance, and FIG. 6 is (b) of FIG. 1I45. FIG. 2 is a diagram for explaining the operation of the road.銚IO...music gift, IO&-...numbering medium, holder--score data insertion control circuit, 13-tempo control circuit, 14-melody f-jl l'f, 9, z-x start... Stop Wea road, S... melody data appearance circuit, 44
--Display section, (equipment)-keyboard, 120-ff near tempo setting circuit, 122, 126°136, 200-selector circuit, 124--register (c) path, 132
, 164 , 182 , 202 , 204 - comparison circuit;
134''''' Clock signal source, 146, 166.1% Go Kakunta, Kato... lower @ setting circuit, focus upper limit setting circuit. Figure 2 Figure 3

Claims (1)

[Scope of Claims] 1. A keyboard, electronic tone generating means for generating nine tones in response to the pressing of the O key on the keyboard, means for generating a tempo clock signal, and a tempo clock signal based on the tempo clock signal described in #I. The nine electronic Qin equipment is equipped with an automatic performance means that automatically generates an electric tone or displays a pressed key, and a data generation means that generates standard tempo data indicating a standard tempo, and a data generating means that generates standard tempo data and a key input from the standard tempo data. a determining means for determining whether or not the manual performance O tempo of the keyboard is within a predetermined range with respect to the reference tempo based on the key press signal; When the tempo is within the range specified by #, the tempo of the automatic performance by the automatic performance means is made to follow the tempo of the manual performance, and when the tempo of the manual performance is not within the range. The electronic musical instrument is characterized in that the electronic musical instrument is equipped with a control means for controlling the tempo clock signal Ojl so as not to change the tempo of the automatic performance beyond a predetermined increase value. 2. In the electronic musical instrument according to claim 1,
The electronic musical instrument is characterized by having means for setting a reference tempo based on the manual operation of the data generating means #ir. 3. % Permission Request OS@l In the electronic concentrator described in paragraph 1, the data generating means includes a storage device for storing the reference tempo data, and a reading circuit for reading the reference tempo data from the storage device. An electronic musical instrument characterized by: