JPH02149894A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To give slur effect to a generated musical tone by providing a means which varies a musical tone state from a pre-slur sound to a post-slur sound gradually according to a straight line or curved line determined corresponding to timbre. CONSTITUTION:In slur play, the straight line or curved line is selected corresponding to the timbre which is set currently and the musical sound state (pitch, sound volume, etc.,) in the slur play is varied according to the straight line or curved line. In this case, a timbre detecting circuit 6 scans the output of each timbre selecting operation element 5 at constant intervals of time to detect the timbre which is set currently and a timbre code NC indicating the timbre is outputted. A slur effect circuit 9 is a circuit which gives slur effect to the generated musical tone and when a slur start signal SS is supplied, a key code KC which varies gradually from the pre-slur sound to the post-slur sound is outputted. Consequently, the slur effect is given.

Description

[Detailed description of the invention]

"Industrial Application Field" The present invention relates to an electronic musical instrument capable of imparting a slur (voltamento) effect to generated musical tones. ``Prior art'' A slur is a playing method in which when changing the pitch from one note to the next, the pitch is not directly changed to the next note, but the pitch is changed smoothly and the transition is made to the next note. . In recent years, electronic musical instruments that can automatically add this slur effect have been developed (see Japanese Patent Publication No. 63-4191). This electronic musical instrument is designed so that when a legato performance operation (a key operation in which a second keyboard key is operated before the first keyboard key is released) is performed while the slur switch is turned on, the slur switch is turned on. A slur effect is automatically applied that changes the pitch smoothly from the sound of the first keyboard key to the sound of the second keyboard key. ``Problems to be Solved by the Invention'' Incidentally, the slur effect imparted in conventional electronic musical instruments of this type usually only changes the pitch linearly, and in some cases the pitch changes along an exponential curve. Although some curves change, this electronic musical instrument only had one type of curve. Therefore, it is an object of the present invention to provide an electronic musical instrument that can change the slur curve (change curve of pitch, volume, etc. during slur performance) according to the tone. The invention includes a performance information output means for outputting performance information;
A slur detection means detects a slur performance based on the performance information output from the performance information output means, a timbre detection means detects the timbre selected by the timbre selection operator, and the slur detection means detects the slur performance. In the event that
and means for sequentially changing the tone state from the pre-slur to the post-slur gold along a straight line or curve determined in accordance with the timbre detected by the timbre detection means. "Operation" According to this invention, when playing a slur, a straight line or a curved line is selected corresponding to the tone currently set, and the musical tone state (pitch, volume, etc.) when playing the slur is adjusted along this straight line or curve. change. This makes it possible to change the state of change of musical tones during slur performance depending on the timbre. ``Embodiment'' Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

【overall structure】

FIG. 1 is a block diagram showing the overall configuration of an electronic musical instrument according to an embodiment of the present invention. In this figure, ■ is a keyboard that controls a plurality of keys, and below each key there is a first key for detecting key operation. A second key switch is provided. Here, the first key switch is turned on when the key is slightly depressed, and the second key switch is turned on when the key reaches approximately the lower limit position. 2 is a key press detection circuit, which sequentially scans the output of each key switch on keyboard 1 every time a certain period of time passes to check the on/off status of each key, and when it detects a key that is turned on, Key-on signal KON
and a narrow key-on pulse KONP.
It also outputs the key code KC of the detected key. Further, when the key is turned off, the key-on signal KON is returned to "O". The key press detection circuit 2 is also provided with a slur detection circuit 3 that detects a key press operation (hereinafter referred to as a slur operation) to which a slur effect should be applied. When the slur detection circuit 3 detects a slur operation, it outputs a slur start signal SS (pulse signal). The initial touch detection circuit 4 is a circuit that detects the initial key press strength (initial touch) of the operated key, and detects the initial key press strength (initial touch) of the operated key. The time until it is turned on is measured, and the measurement result is output as touch data TD. The tone color selection operator 5 is a tone color setting operator provided on the operation panel. The timbre detection circuit 6 scans the output of each timbre selection operator 5 every time a predetermined period of time elapses, detects the currently set timbre, and outputs a timbre code NC indicating the timbre. The slur effect circuit 9 is a circuit that applies a slur effect to the generated musical tone, and when supplied with the slur start signal SS, outputs a key code KC that sequentially changes from the pre-slur note to the post-slur gold. Furthermore, if the slur start signal SS is not supplied, the key code KC output from the key press detection circuit 2 is output as is. The tone generator 10 forms digital musical tone data GD having the pitch of the key code KC output from the slur effect circuit 9 and the tone indicated by the tone code NC output from the tone detection circuit 6, and sends it to the multiplier 11. Output. The enherobe generation circuit 12 synchronizes with the key-on signal KON, generates sequentially changing digital envelope data ED with a waveform determined according to the tone color code NC, and outputs it to the multiplier 11. The multiplier 11 multiplies the musical tone data GD and the envelope data ED, and the multiplication result is sent to the D/A converter 13.
Output to. The D/A converter 13 converts the output of the multiplier 11 into an analog musical tone signal and outputs it to the sound system 14. The sound system 14 is composed of an amplifier, a speaker, etc., and generates a musical tone signal outputted from the D/A converter 13 as a musical tone. Next, each part of the above-mentioned electronic musical instrument will be explained in detail.

[Slur detection circuit 3] As shown in FIG. 2, in this electronic musical instrument, if the second key is pressed before the first key is released (△t≧ O), it is determined that it is a slur operation, and the slur start signal SS shown in the figure is output. Note that the overlap time between the first key press and the second key press △(but O
It may be determined that it is a slur operation only when ≦△t≦Tx (where Tx is a certain period of time). In addition, a slur indication switch is provided separately, and when this switch is operated, a sound whose envelope has not yet become O is searched for after the first turn-on, and when detected, a slur start signal SS is output. You can do it like this. In this case, a slur effect is applied from the detected sound to the first key-on sound. Also, 1st. Detects the overlap of the second pressed key, and
If the envelope based on the key depression is not O, the slur start signal SS may be output. Furthermore, the above-mentioned overlap time △11) <0≦△t≦TX
The slur start signal SS may be output when the following is satisfied and the envelope is not O.

[Envelope Generation Circuit 12] FIG. 3 is a block diagram showing the configuration of the envelope generation circuit 12, and in this figure, 18 is an envelope data generation section. This envelope data generation section 18 is
In response to the key-on signal KON (see FIG. 4 (a)) output from the key press detection circuit 2, envelope data EDa that changes in the waveform shown in FIG. 4 (b), for example, is generated, and at the timing of clock pulse φe. Output sequentially. In this envelope waveform, AT is a rising part, ST is a sustaining part, and DC is a damping part. This envelope waveform differs for each tone, and the peak value of the rising portion AT and the peak value of the sustaining portion ST are each determined according to the touch data TD. In addition, when the slur start signal SS is supplied, the envelope data generation circuit 18 generates an envelope waveform based on the first key press and an envelope waveform based on the second key press (an envelope waveform that is a linear connection of the envelope waveforms). It generates envelope data EDa that changes according to the clock pulse φe and outputs it at the timing of the clock pulse φe.
If Figures (A) and (B) are the first and second key press timings, the slur start signal SS is generated immediately after the second key press, as shown in Figure (C). Then, the slur timing at which the slur effect is applied becomes the timing shown in (d) in the same figure, and the waveform of the envelope data EDa becomes the timing shown in (d) in the same figure.
The waveform shown in e) is obtained. Here, as is clear from the same figure (e), when the slur start signal SS is supplied,
A sustained part ST of the envelope waveform based on the first key depression and a sustained part ST of the envelope waveform based on the second key depression are connected by a straight line. Therefore, the number of envelope data at the slur timing is SDN, and the level of the first sustain part is DI.
, the level of the second sustaining part is D2, and (D2-D I)/5DN=d... (1), then slur start (after No. 3 SS, the envelope data EDa is D 1, DI ++1. DI −
i-2d..., D l+(SDN-1)d, D2
(See the broken line in Figure 5 (e)). Note that, as explained below, the above data number SDN is determined by the read control circuit 1.
Supplied from 9. Second, the slur envelope memory 20 is a memory in which n envelope waveforms (see FIG. 6) used in the slur timing described above are stored. In other words, when playing slurs, this electronic musical instrument does not use the broken line portion of the envelope ill shape shown in FIG. It is now possible to fit it in. In this case, which waveform is used is determined according to the tone code NC and touch data TD. Further, each waveform is stored as data indicating the displacement from the 0 level. Therefore, when the slur envelope waveform read from the slur envelope memory 20 (see FIG. 5 (vi)) is added to the broken line part of FIG. 5 (e), as shown in FIG. 5 (g), The envelope waveform at the slur timing changes according to the waveform read from the memory 20. The read control circuit 19 is a circuit that reads the envelope waveform in the slur envelope memory 20, and has a seventh
A waveform number table 22 shown in the figure and a start address table 23 shown in FIG. 8 are provided. The waveform number table 22 is a table in which slur envelope waveform numbers determined according to the upper 6 bits of the timbre code NC and touch data TD are stored in advance, and the timbre code NC and the upper 6 bits of the touch data TD are used as address data. When supplied, the corresponding slur envelope waveform number is read. The start address table 23 is a table in which the start address of the storage area of the memory 20 in which each slur envelope waveform is stored and the number of data SDN constituting the envelope waveform are stored, and the envelope waveform number is supplied as address data. Then, the corresponding start address and data SDN are read out. Therefore, the read control circuit 19 always outputs "0". When the slur start signal SS is supplied, the tone code NC supplied from the tone detection circuit 6 and the touch data TD supplied from the initial touch detection circuit 4 at that time are supplied to the waveform number table 22. The slur envelope waveform number is read out, the read waveform number is supplied to the start address table 23, and the start address and data SDN are read out. and,
The data SDN is output to the envelope data generating section 18. Thereafter, the successive output control circuit 19 sequentially reads slur envelope data from the slur envelope memory 20 based on the start address read from the table 23, and sequentially outputs the slur envelope data to the adder 21 at the timing of the clock pulse φe. The adder 21 adds the envelope data EDa output from the envelope data generator 18 and the output data of the read control circuit 19, and outputs the addition result as envelope data ED. That is, this adder 21 is
Normally, the data EDa is output as the envelope data ED, and when the slur start signal SS is generated, the data EDa and the slur envelope data output from the read control circuit 19 are added. ), and outputs the addition result as envelope data ED (see FIG. 5(G)). Note that the envelope generating circuit 12 described above stores various envelope waveforms in the slur envelope memory 20 and changes the envelope during slur performance based on this waveform. Different arithmetic expressions may be prepared and envelope data may be calculated by selecting these arithmetic expressions based on the timbre code NC.

[Slur Effect Circuit 9] FIG. 9 shows the configuration of the slur effect circuit 9. This is a diagram. In the slur effect circuit 9 shown in this figure, the key code KC output from the key press detection circuit 2 shown in FIG. The signal is output to the tone generator 10 in FIG. 1 via the hold circuit 32 which is in a through state. On the other hand, when the slur start signal SS is supplied, the curve stored in the slur curve memory 33 is read out, and a key code KC that changes sequentially according to the change curve of the read curve is created. The key codes KC are sequentially outputted via the hold circuit 32. The details will be explained below. (A) Structure First, FIG. 1O is a diagram showing the above-mentioned slur curve memory 33, in which m different slur curves are stored. Each slur curve is
As shown in FIG. 11(a), the first data Ds is rO
J, the last data De is rlJ, and the data DX between them are all data satisfying O≦DX≦1. Also,
The number of pieces of data CN differs for each curve. and,
Each piece of data is sequentially read out in the order of DS→De. Reference numeral 34 in FIG. 9 is a memory readout circuit for reading data in the slur curve memory 33, and is composed of a slur curve selection circuit 35, an address generation circuit 36, and an adder 37. The slur curve selection circuit 35 is provided with a waveform number table 40 shown in FIG. 12 and a leading address table 41 shown in FIG. 13. The waveform number table 40 is a table in which the numbers of slur curves determined according to the timbre code NC and the upper six bits of the touch data TD are stored in advance.
When the upper 6 bits of C and evening/ch data TD are supplied as address data, the corresponding slur curve number is read out. The start address table 41 contains the start address of the storage area of the memory 33 where each slur curve is stored and the number of data CN making up the slur curve.
is a table in which are stored, and when a slur curve number is supplied as address data, the corresponding start address and data CN are read out. Therefore, when the slur curve selection circuit 35 is supplied with the slur start signal SS, the timbre detection circuit 6
The tone code NC supplied from the initial touch detection circuit 4 and the touch data TD supplied from the initial touch detection circuit 4 are supplied to the waveform number table 40 to read the slur curve number, and the read number is supplied to the start address table 41 to read the slur curve number. Read address and data CN. Then, the first address is outputted to the adder 37 as address data SAD, and data CN is outputted to the address generation circuit 36. The address generation circuit 36 is a circuit that generates address data PAD that increases sequentially as 0, 1.2, . Based on this address data PAD, it is sequentially read out from the memory 33. This address data generation circuit 36 is composed of an address counter, a gate circuit, a comparison circuit, etc. Then, the control circuit 39 sends the memory read signal MRD (“1
When the "signal" is supplied, the address counter is reset at its rising edge. Thereafter, the address counter counts up the slur clock φS, and the count output is sequentially output to the adder 37 as address data PDA. When the count output of the address counter matches the data CN output from the slur curve selection circuit 35, the slur end signal SE is output to the control circuit 39.Control circuit 39
receives this slur end signal SE and returns the memory read signal MRD to "0". This causes the address counter to stop counting. The adder 37 adds the start address SAD output from the slur curve selection circuit 35 and the address data PAD output from the address generation circuit 36, and outputs the addition result to the slur curve memory 33 as address data AD. With this address data AD, the data in the slur curve memory 33 is read out sequentially, and the interpolation circuit 4
The interpolation circuit 44 is a circuit that performs, for example, linear interpolation between each data output from the slur curve memory 33, and the data interpolated by the interpolation circuit 44 is sequentially sent to the multiplier 45. The multiplier 45 multiplies the output data of the interpolation circuit 44 and the output data of the subtracter 46, and outputs the multiplication result to the adder 47.The adder 47 outputs the output data of the multiplier 45 and the output data of the latch 48, and outputs the addition result to the selector 31. When the select signal SEL output from the control circuit 39 is "1'", the selector 31 uses the output of the adder 47 as
Also, when it is "0", the output of the latch 30 is selected and outputted. Further, the hold circuit 32 outputs a hold signal HLD
When it is "O", it enters a through state, and when it rises to "L", it stores and holds the manual data. The control circuit 39 is a circuit that generates control signals to control the above-mentioned parts, and receives the key-on signal KON, key-on pulse KONP, and slur start signal SS output from the key press detection circuit 2 shown in FIG. Generates a signal HLD, a memory read signal MRD, and a select signal SEL and outputs them to each section. FIG. 14 shows the timing of each of the above signals. (B) Operation Next, the operation of the slur effect circuit 9 described above will be explained. (B-1) When the slur start signal SS is not supplied In this case, the control circuit 39
“0” is output as L to the selector 31. As a result, the output of the latch 30 is selected by the selector 31. In this state, the key-on signal KON rises, and at this rising point, the key-on pulse KON
When ONP is supplied, the control circuit 39 outputs the key-on pulse KONP to the latch 30, and
The hold signal HLD (“l” signal) is transferred to the hold circuit 32.
Output to. Note that the pulse width of the hold signal HLD is approximately twice that of the key-on pulse KONP. When the key-on pulse KONP is supplied to the latch 30, the key code KC is read into the launch 30 and supplied to the hold circuit 32 via the selector 31. When the hold signal HLD returns to 0'', the hold circuit 32 enters the through state, and the key code KC output from the latch 30 is output to the tone generator 10 (FIG. 1). (B-2) When the slur start signal SS is supplied, the operation in this case will be explained with reference to Fig. 14.In the following explanation, the key code output from the key press detection circuit 2 based on the first key press KC is called a first key code KCl, and the key code based on the second key press is called a second key code KC2. First, a key-on pulse KONP based on the second key press is sent to the control circuit 39 (FIG. 14 (d)). At this time, a slur start signal SS (sign Pi) is supplied, and at the same time, a slur start signal SS (
When the signal shown in FIG. It outputs the key-on pulse KONP to the latches 30 and 48, and also outputs the hold signal qHLD ((e) in the figure) to the hold circuit 32. Key-on pulse K
When ONP is supplied to the latch 48, the first key code KC that was being supplied to the input terminal of the latch 48 at this point is
I is loaded into the latch 48 and the second key food KC2 is loaded into the latch 30 when the key on pulse KONP is supplied to the latch 30. Further, when the hold signal HLD (“1”) is supplied to the hold circuit 32, the first key code KCI is held in the hold circuit 32. Next, the control circuit 39 sends a slur start signal SS
At the falling edge of , a select signal (“L” signal) is output to the selector 31. Thereby, the selector 31 selects the output of the adder 47 from now on. Next, the control circuit 39 sets the hold signal HLD to “O”.
At the same time, the memory read signal MRD (“1”
signal) ((g) in the figure) is output to the address generation circuit 36. When the hold signal 1-iLD becomes "0", the hold circuit 32 enters the through state, and thereafter, the output of the adder 47 is outputted to the tone generator 10 via the selector 31 and the hold circuit 32. On the other hand, when the memory read signal MRD is supplied to the address generation circuit 36, the adder 37 sequentially outputs the address data AD.
It is supplied to the slur curve memory 33. As a result, the slur curve data SCD corresponding to the tone code NC and the touch data TD based on the second key press are sequentially output from the slur curve memory 33, and are supplied to the interpolation circuit 44. Curve data 5CDa is sequentially output to the multiplier 45. The multiplier 45 outputs the output data of the subtracter 46, that is, (
KC2-KCI) is multiplied by slur curve data 5CDa, and the result is output to the adder 47. The adder 47 adds the output data of the multiplier 45 and the first key code KC1 output from the latch 48, and outputs the addition result KCl+(KC2-KC1)·5CDa. Here, the day and evening 5CDa are data such that 0≦5CDa≦1, therefore, KCI≦KCl+(KC2−
KCl)・5CDa≦KC2 holds true. As a result, if the data 5CDa changes according to the waveform shown in FIG. 11(a), for example, KCI<
In the case of KC2, the output data of the adder 47 is changed from KCI to K.
It changes according to the waveform up to C2, while KCI>KC
In the case of 2, the output data of the adder 47 is the waveform of FIG. 11(b) which is inverted with reference to ro and 5J from the waveform of FIG. 11(a).
changes according to the waveform. The output data of the adder 47 is then supplied to the tone generator 10 via the selector 31 and hold circuit 32. As a result, musical tone data GD whose pitch changes according to the slur curve in the slur curve memory 33 is formed in the tone generator 10, and this musical tone data GD is transferred to the multiplier 1.
1, the signal is multiplied by the envelope data ED outputted from the envelope generating circuit 12 described above, and this multiplication result is converted into an analog signal by the D/A converter 13, and is produced as a musical tone with a slur effect added by the sound system 14. Ru. The above is the slur effect applying operation of the slur effect circuit 9 shown in FIG. 9 during normal performance. (C) Operation when there is a special key operation - If the player performs a slur operation again during slur automatic performance Figure 15 is a timing chart of each signal of the slur effect circuit 9 in this case. . In (c) of this figure, the slur start signal SS indicated by the symbol P2 is the slur start signal SS based on the first slur operation, and the rise of the hold signal HLD occurs at the same timing as this slur star 1 signal. At the falling edge, the memory read signal MRD rises, and an automatic slur performance is performed. If the player performs a slur operation again before this memory read signal rises (during slur automatic performance), the slur start signal SS indicated by reference numeral P3 in FIG. is supplied to the control circuit 39 of. The control circuit 39 receives the slur start signal SS and performs the same processing as described above, that is, a key-on pulse KO.
NP to latch 30°48, and hold signal HLD
Then, the memory read signal MRD is set to "0". Only the process of setting the memory read signal MRD to "0" differs from normal slur processing. Thereafter, as in the case described above, the control circuit 39 sets the select signal SEL to "l" (although in this case it has already been set to 'l'), and then sets the memory read signal MRD to l'. Thereafter, the slur curve memory 33 is read in the same manner as in the case described above, and when the slur end signal SE is output from the address generation circuit 36, the slur processing ends. 16 is a timing chart of the valley signal of the slur effect circuit 9 in this case. When the second pressed key is released at time tl shown in (A) of this figure, However, as shown in (E) to (G) in the same figure, there is no change in each signal.In this case, as the key-on signal KON becomes “O°゛,” the envelope decreases successively, or the pitch changes. In the above case, if the key is pressed again immediately after that, Figure 17 is a timing chart for this case.After the second pressed key is released at time t1. , at the time ill t 2 before the slur end signal SE is generated, the third
When a key is pressed, a key-on pulse K ON P
At the rising edge of this key-on pulse KONP, the select signal SEL is supplied to the key-on pulse control circuit 39.
is returned to "0" (see FIG. 17(e)). Thereby, the selection state of the selector 31 is switched. In this case, since the slur start signal SS is not generated, normal (unrelated to slur performance) musical tone generation is performed thereafter. As is clear from FIG. 17(f), 0), even after the selector 31 is switched,
Memory read signals M and RD are continuously output, and therefore, the address counter in address generation circuit 36 continues counting until slur end signal SE is generated. (D) Other configuration examples Next, other configuration examples of the above-mentioned slur effect circuit 9 will be explained. FIG. 18 is a block diagram showing the same configuration example, and in this figure, the same components as those in FIG. 9 are given the same reference numerals, and their explanations will be omitted. The circuit shown in this figure differs from the circuit shown in FIG. 9 in the data in the slur curve memory 51. That is, the data in the slur curve memory 33 in FIG. 9 is data that changes from 0 to l, as shown in FIG. 11 (a). On the other hand, the data in the slur curve memory 51 in FIG.
As shown in FIG. 19, this is data that changes from 1 to 0. In this case, data Ds-t is first read out, then data 0≦DX≦1 is sequentially read out, and finally data De=0 is read out. Next, the circuit of FIG. 18 differs from the circuit of FIG. 9 in the processing of data read out from the interpolation circuit 44. That is, in the circuit of FIG. 18, in the subtracter 52,
The key code KC2 output from the latch 30 is subtracted from the key code KCI output from the latch 48, and the result of this subtraction is multiplied by the slur curve data 5CDa output from the interpolation circuit 44. (KC1-KC2)·5CDa is supplied to the adder 54 via the gate circuit 53. Here, the signal GS for controlling the opening and closing of the gate circuit 53 is the ninth
“1” at the same timing as the select signal SE″L in the figure.
”, and when this signal GS is “1”, the gate circuit 53 is in an open state.The adder 54 performs the calculation (KC1-KC2)・5CDa+KC2.Then, this ei calculation result is held. It is output as a key code KC9 via the circuit 32. According to the above configuration, when KCl > KC2, the pitch changes along the waveform in the slur curve memory 51 (see FIG. 19). A changing slur is played automatically,
If KCL<KC2, an automatic slur performance is performed in which the pitch changes according to a waveform inverted from the waveform in the slur curve memory 51 with reference to ro and 5J. Note that in the above embodiment, the slur curve memory 33 or 51
Although the pitch of the slur is changed according to the data in the table, instead of this, an arithmetic expression may be selected based on the timbre code NC, and the pitch may be changed by calculation based on the selected arithmetic expression. Similarly, instead of envelope control based on the waveform in the slur envelope memory 20, one of a plurality of arithmetic expressions may be selected and envelope control may be performed based on the selected arithmetic expression. Further, in the above embodiment, the envelope waveform in the slur envelope memory 20 is selected based on the value of the touch data TD indicating the initial touch intensity, but instead of this, the pre-slur sound and the slur detection sound are selected. The envelope waveform may be selected based on the difference between the touch data TD and the touch data TD. Alternatively, the envelope waveform may be selected based on the value of the key-off velocity (key release speed) of the pre-slur sound. Also, based on the highest level of the aftertouch strength of the pre-slur (or the aftertouch strength level of the pre-slur when the key is on for slur detection, or the aftertouch strength level of the pre-slur when the key is off) Select the envelope waveform. In addition, we measured the actual duration of the sound relative to the note length of the pre-slur sound,
The envelope waveform may be selected based on this measurement result. Furthermore, a slur envelope curve selection switch may be provided so that the performer can select a desired curve. Note that each of the embodiments described above can be applied not only to the selection of a slur envelope waveform but also to the selection of a waveform in the slur curve memory 33 or 51. "Effects of the Invention" As explained above, according to the present invention, there is an effect that the change curve (slur curve) of the pitch, m, etc. during slur performance can be changed depending on the set tone color. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is a timing diagram for explaining slur detection, FIG. 3 is a block diagram showing the configuration of the envelope generation circuit 12 in the same embodiment, and FIG. 4 is an envelope data ED diagram.
FIG. 5 is a timing diagram for explaining the operation of the envelope generation circuit 12 shown in FIG. 7 and 8 are diagrams showing a waveform number table 22 and a start address table 23 provided in the successive control circuit 19 of the envelope generation circuit 12, respectively, and FIG. 9 is a slur effect circuit in the same embodiment. 9 is a block diagram showing the configuration of the slur effect circuit 9, FIG. 10 is a diagram showing the stored contents of the slur curve memory 33 in the slur effect circuit 9, FIG. 12 and 13 are the waveform number table 40 and start address table provided in the slur curve selection circuit 35 of the slur effect circuit 9, respectively. 41, FIG. 14 is a timing diagram for explaining the operation of the slur effect circuit 9, and FIG.
17 are timing diagrams for explaining the operation of the slur effect circuit 9 when a special key operation is performed, and FIG. 18 is a block diagram showing another example of the structure of the slur effect circuit 9. FIG. 19 is a diagram showing an example of a slur curve stored in the slur curve memory 51 in FIG. 18. l...Keyboard, 3...Slur detection circuit,
5... Tone selection operator, 6... Tone detection circuit, 9... Slur effect circuit, 12... Envelope generation circuit.

Claims (1)

[Scope of Claims] Performance information output means for outputting performance information; slur detection means for detecting a slur performance based on the performance information output from the performance information output means; and a timbre selected by a timbre selection operator. timbre detection means for detecting a slur performance; and when the slur detection means detects a slur performance, the slur detection means sequentially detects a slur from a pre-slur sound to a post-slur sound along a straight line or a curved line determined in accordance with the timbre detected by the timbre detection means. An electronic musical instrument comprising: a means for changing a musical tone state;