JP3246911B2 - Electronic musical instrument - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument capable of controlling a volume of a musical sound and a temporal change of a timbre.

[Prior Art] FIG. 11 is a block diagram showing a configuration example of a conventional electronic musical instrument to which a control waveform generator proposed by the present applicant (see Japanese Patent Application Laid-Open No. 62-265697) is applied. In the figure, 1 is a keyboard composed of a plurality of keys, 2 is a key press detection circuit, which detects that a key of the keyboard 1 is pressed, outputs a key code KC corresponding to the key, and allows the player to The key-on signal KON is output while the key is pressed.

3 is the key code KC and the key code KC
A tone signal generation circuit 4 for generating a tone signal MS corresponding to the tone signal 4 is a sound system including an amplifier, a speaker, etc., which receives the tone signal MS and generates a tone.

Furthermore, 5 is a parameter setting circuit, the output envelope waveform parameter data D _SG relates envelope waveform ENV tone signal MS which is set by the performer, and various parameters D _PR, such as tone color parameter data regarding the timbre of the musical tone signal MS I do. 6 receives the envelope waveform parameter data D _SG and inputs the envelope waveform data D _ENV
Is an envelope waveform generating circuit that outputs a signal.

Here, FIG. 12 shows an example of the envelope waveform ENV. The envelope waveform ENV is formed from four basic envelope waveform portions SEG0 to SEG3 (hereinafter, a section of each waveform portion is called a segment, and a waveform in this segment is called a segment waveform).

Each of the segment waveforms SEG0 to SEG3 has a constant level waveform portion W1 having a constant waveform level (interval) T0 to T3, and a rising waveform whose waveform level changes at a predetermined slope (rate) R0 to R3. The waveform level of the rising waveform portion or the falling waveform portion W2 rises or falls from the level of the constant level waveform portion W1 to the target level L1 to L3.

Next, FIG. 13 shows a front view of a configuration example of the parameter setting operation section 7 in the parameter setting circuit 5. In this figure, 8 is a envelope waveform parameter setting unit that sets the envelope waveform parameters D _SG, comprising a setting switch group 8a~8d for each segment SEG0~SEG3 of Figure 12.

These setting switch groups 8a to 8d include an interval setting switch 9T corresponding to each interval T0 to T3 and a rate setting switch 9 corresponding to each rate R0 to R3.
R, and has a level setting switch 9L corresponding to each level L1 to L3. Further, the setting switches 9T to 9L are each constituted by a multi-stage switch, and when the player selects and operates one of them, the length of the interval T0 to T3, the value of the rate R0 to R3 and the level L1 to The value of L3 can be set arbitrarily.

Further, reference numeral 10 denotes a tone selection section for selecting a tone, which includes a selection switch 11a which can select a tone set at a factory and a selection switch 11b which can select a tone set by a player. It is configured.

In addition, reference numeral 12 denotes another parameter setting unit, which includes, for example, a plurality of parameter setting operators 13 for setting parameters relating to various effects such as the vibrato effect, parameters relating to the total volume of musical sounds, and the like.

"Problems to be Solved by the Invention" By the way, natural musical instruments such as pianos and organs have an envelope waveform ENV and a tone unique to each musical instrument. Various modifications have been made to electronic musical instruments so that the musical sounds played by these natural musical instruments can be reproduced as faithfully as possible.

In the above-described conventional electronic musical instrument, the player sets parameters such as the length of the intervals T0 to T3 of the envelope waveform generating circuit 6, the values of the rates R0 to R3, and the values of the levels L1 to L3. Setting switch 9T ~ 9L
Can be changed.

When making a large image change, for example, the envelope waveform ENV is changed to the envelope waveform E of the piano.
If you want to change only the tone to the tone of the organ while keeping the NV, and make it a tone that is not attached to either, the tone selection section 10
In this case, there is a disadvantage that the parameters of the envelope waveform generating circuit 6 are changed together with the tone color.

Therefore, the envelope waveform ENV
Conventionally, there is a drawback in that each parameter of the envelope waveform generating circuit 6 must be changed patiently in order to greatly change.

The present invention has been made in view of the above circumstances,
It is an object of the present invention to provide an electronic musical instrument that can easily change the envelope waveform ENV while keeping the tone.

[Means for Solving the Problems] An electronic musical instrument according to the present invention comprises a storage means for storing a plurality of envelope parameters for generating an envelope waveform for each timbre in association with each timbre, a timbre of a tone signal and the tone signal. Selecting means for specifying a set of envelope waveforms corresponding to the timbres, a reading means for reading a plurality of envelope parameters corresponding to the timbre specified by the selecting means from the storage means, and a plurality of read envelopes. An envelope waveform generating means for generating an envelope waveform based on the parameter; a tone signal generating means for generating a tone signal based on the envelope waveform generated by the envelope waveform generating means and the tone specified by the selecting means; The correspondence between each tone and a plurality of envelope parameters in the storage means By reading a plurality of envelope parameters corresponding to a timbre different from the timbre designated by the selection means from the storage means and supplying the envelope parameters to the envelope waveform generation means without change, the envelope waveform generation means generates the envelope waveform. Changing means for changing the envelope waveform,
Even when the envelope waveform is changed by the changing means, a timbre parameter designating a timbre is not changed.

[Function] In the present invention, a plurality of envelope parameters for generating an envelope waveform are stored in the storage means for each timbre in association with each timbre. The selecting means specifies the tone color of the tone signal and an envelope waveform corresponding to the tone color of the tone signal as a set. The reading means reads a plurality of envelope parameters corresponding to the tone specified by the selecting means from the storage means, and the envelope waveform generating means generates an envelope waveform based on the read plurality of envelope parameters. On the other hand, the changing means reads a plurality of envelope parameters corresponding to a tone different from the tone specified by the selecting means from the storage means and supplies the envelope parameters to the envelope waveform generating means, so that the envelope waveform generated by the envelope waveform generating means To change. At this time, the correspondence between each tone color and the plurality of envelope parameters in the storage means is not changed, and even if the envelope waveform is changed, the tone color parameters are not changed. Then, the tone signal generating means generates a tone signal based on the envelope waveform generated by the envelope generating means and the tone specified by the selecting means.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic musical instrument according to an embodiment of the present invention. In this figure, the same reference numerals are given to parts corresponding to the respective parts in FIG. 11, and the description thereof will be omitted. In FIG. 1, reference numeral 14 denotes a keyboard composed of a plurality of keys, which detects that a key is pressed, outputs a key code KC corresponding to the key, and outputs a key code KC corresponding to the key.
And between the key-on as shown in (b) until the key-off, and outputs a signal S _K is at "H" level.

Further, 15 is a key-on-key-off processing circuit, has a key assigner that can be assigned respectively to eight channels to eight sound arrived later priority enter multiple signals S _K, at different timings each channel 10 As shown in FIGS. 9C and 9D, the key-on signal KON and the key-off signal KOF are output in a time division manner. Further, when the same key as the key assigned to the already-existing channel is pressed during the generation of eight sounds, the channel to which the key is assigned is searched, and the rapid dump signal DP is output at the timing of the channel. After the dump, the key-on signal KON is output again at the timing of the channel. The time from the generation of the dump signal DP to the generation of the key-on signal KON is about 20 msec.

Further, 16 ₁ and 16 ₂ are envelope generators, respectively, which receive a key-on signal KON, a key-off signal KOF, and a dump signal DP, and, like the key-on / key-off processing circuit 15, perform time-division envelope waveform parameter D.
Outputs the _ENV1 and D _ENV2 tone color parameter D _T1 and D _T2, and outputs the reset signal S _R1 and S _R2 when muted. Reference numeral 17 denotes an OR gate which receives the reset signals S _R1 and S _R2 and supplies the output signal S _R to the reset signal input terminal of the key-on / key-off processing circuit 15.

Incidentally, the musical tone signal generating circuit 3 ₁ and 3 ₂ and the envelope generator 16 ₁ and 16 ₂ and the respectively provided is to issue a 2 octet effect.

Here, FIG. 2 shows a block diagram of the envelope generator 16. In this figure, 18 _{1-18 3} each time division flip-flop is (hereinafter, when referred division FF), key-on signal KON, respectively input the key-off signal KOF and dump signal DP, the clear signal CL for each channel
The signal of the "H" level is output at the timing of each channel until is input.

Here, FIG. 3 shows a specific block diagram of the time division FF18. In this figure, 19 is a set signal input terminal to which a set signal S _S, such as key-on signal KON is inputted, 20 is a reset signal input terminal to which a reset signal S _R is input, clock 1 bit of input data is 21 1 bit 8 stage shift register for shifting in synchronization with the phi, the inverter inverts the reset signal S _R 22, 23 inputs the output of inverter 22 to the first input terminal, the shift register to the second input terminal
AND gate for receiving the output of 21, 24 is a gate which inputs a set signal S _S to the first input terminal receives an output of the AND gate 23 to a second input terminal.

In FIG. 2, reference numerals 25 and 26 denote a rate memory and a level memory, respectively, and FIGS. 4 and 5 show examples of their configurations. The rate memory 25 and the level memory 26 include natural instrument sounds, such as a piano,
For each musical tone such as strings, brass, trumpet, organ, pipe organ, etc., the preset rate and level of the envelope waveform ENV are stored at eight points each. In Figure 4, 25 ₁ memory area rate of the piano is stored, 25 ₂ is a memory area Strings rate is stored, in Figure 5,
26 ₁ memory area level piano is stored, 26 ₂ is a memory area in which the level of the strings are stored.
Although not shown in FIGS. 4 and 5, 25 ₃ to 2
5 ₆ and 26 _{3-26 6} brass respectively, trumpet, is organ and organ of rate and level is a memory area that is stored. In FIG. 4, r is a proportional constant. In addition, the rate and level values range from -100r to 100r and 0 to 100, respectively.
It is.

Here, FIGS. 6 to 8 (a) and (b) show the envelope waveform EN of the piano, organ and strings.
V and the corresponding rates and levels. Note that the rate in the memory 25 and the level memory 26, the user each have memory areas 25 ₇ and 26 ₇ can set the rate and level freely are provided.

Further, in FIG. 2, reference numerals 27 and 28 denote rewriting means, respectively, and the player arbitrarily sets an 8-point rate and level in the user's memory area of the rate memory 25 and the level memory 26 described above. 29 is a selector, when the time division FF 18 ₃ of the output signal is "L" level, the rate output of the memory 25 the data by selecting the output time division FF 18 ₃
When the output signal is at "H" level, a rapid damping value (for example, -100r) is selected and output.

In addition, 30 is an adder, 31 is a gate, and 32 is a shift register. The adder 30 inputs the output data of the selector 29 to an addition input terminal A. The addition output of the adder 30 is time-division FF
18 is input to the shift register 32 via the gate 31 which is opened and closed by the output signal of ₁ and is shifted in synchronization with the clock φ, and is then fed back to the addition input terminal B of the adder 30 and the current of the envelope waveform ENV _Is output as the envelope waveform data D _ENV representing the waveform level of.

A predetermined value detection circuit 33 detects that the output data of the shift register 32 has reached a predetermined value (for example, near zero) and outputs a detection signal, and 34 delays the detection signal by 1/2 of the clock φ. A D-type flip-flop (hereinafter referred to as D-FF) 35 is a comparator, which compares the output data of the shift register 32 with the output data of the level memory 26 and outputs a match signal EQ when they match. An AND gate 36 inputs the output data of the D-FF 34 to a first input terminal and inputs a coincidence signal EQ to a second input terminal.

Reference numeral 37 denotes a musical tone selection switch group. When these switches are pressed, the rates and levels of the rate memory 25 and the level memory 26 corresponding to the envelope waveform ENV of the natural musical instrument sound described above, and the envelope waveform ENV the corresponding timbre of the musical tone signal generating circuit 3 ₁ and 3 ₂ of FIG. 1 is selected. 37 ₁ piano, 37 ₂ strings, 37 ₃ brass, 37 ₄ trumpet, 37 ₅ Organ, 37 ₈ is a push switch for selecting the respective musical instrument sound pipe organ, 37 ₇ performer This is a push switch for selecting a set musical tone. Incidentally, the power source voltage are respectively applied to one end of each push switch 37 _{1-37 7.}

In addition, 38 is an address generating circuit, when any one of the push switches 37 ₁ to 37 ₇ is pressed, generates an address corresponding to the push switch 37 _{1-37 7.} 39 is a gate 7 input, the input terminal of the first input to the seventh is connected to one end of each of the push switches 37 ₁ to 37 ₇ respectively. An address counter 40 loads the address output from the address generation circuit 38 in synchronization with the output of the OR gate 39, and each time the push switch 41 or the push switch 42 is pressed,
The value is incremented or counted down by one. A power supply voltage is applied to one end of each of the push switches 41 and 42.

Further, 43 is a gate with three inputs, a reset signal S _R to the first input terminal is input, the second and third input terminal is connected to one end of each of the push switches 41 and 42. 44 is a one-shot multivibrator (below,
OS), and outputs an “H” level signal for a predetermined period by inputting the output of the OR gate 43.

Further, 45 is an adder, 46 is a selector, 47 is a shift register, and the adder 45 inputs the value 1 to the addition input terminal B. The addition output of the adder 45 is connected to the data input terminal of the selector 46.
D ₁ , when the coincidence signal is at “H” level, is selected and output, is input to the shift register 47, and is shifted by the shift register 47 in synchronization with the clock φ. The signal is fed back to the addition input terminal A.
When the coincidence signal is at “L” level, the selector 46 selects and outputs the output data of the shift register 47. Further, the shift register 47 is reset by the output signal of the OS 44.

In addition, 48 is a selector, when time division FF 18 ₂ of the output signal is "L" level, and selects and outputs the output data of the shift register 47, time division FF 18 ₂ of the output signal is "H" level At this time, the lower data of the address corresponding to the point 8 is selected and output. The output data of the address counter 40 and the output data of the selector 48 are supplied to the rate memory 25 and the level memory 26 as upper data and lower data of the address, respectively.

A decoder 49 decodes output data of the address counter 40 into display data. Reference numeral 50 denotes a display for displaying display data, for example, as shown in FIG. FIG. 9 shows that the type A of the element envelope is an organ.

In such a configuration, a case will be described in which the envelope waveform ENV is played with a piano while the timbre is maintained as the organ. First, when the player presses the push switch 37 ₅ selects the envelope waveform ENV and tone of a tone organ, the upper data of the address corresponding to the tone of the organ is generated from the address generating circuit 38, the data in the address counter 40 in synchronization with the output of the oR gate 39 is outputted loaded input rate memory 25, is inputted respectively to the level memory 26 and the decoder 49, the musical tone signal generating circuit 3 ₁ and 3 ₂ as the tone color data D _T1 and D _T2 Is done. Therefore, in the decoder 49, the output data of the address counter 40 is decoded into display data, and the display 50 displays, for example, as shown in FIG.

Next, when the player presses the push switch 41 four times, the address counter 40 counts up and outputs four address values of the already loaded organ. As a result, the upper data of the address corresponding to the musical tone of the piano is input to the rate memory 25, the level memory 26, and the decoder 49, respectively.

Incidentally, time division FF 18 ₁ ~ 18 ₃ and the shift register 47 is assumed to have been reset at power-on. Therefore, when the output signal of the division FF 18 ₁ ~ 18 ₃ are all "L" level,
The output data of the shift register 47 is “0”.

Thus, the selector 48, the data input to the data input terminal D ₀ "0" is selected, is inputted to the rate memory 25 and the level memory 26. Therefore, rate memory
Memory area 25 and the level memory 26 25 ₅ and 26 ₅ point 1 data, in this case, 80 r and 75 are output. And after the value 80r goes through the selector 29,
The value 75 is input to the addition input terminal A of the adder 30, and the value 75 is input to the comparison input terminal B of the comparator 35, so that the key-on signal KON is on standby.

Next, the performer depresses keys corresponding to, for example, the C and E sounds on the keyboard 14 so that
When the signals S _K1 and S _K2 are output at the timings shown in FIGS. 7A and 7B and the corresponding key codes KC are output, the key-on / key-off processing circuit 15
In, as shown in FIG. 10 (c), key-on signal KON corresponding to the signal S _K1 is assigned to channel 1,
Key-on signal KON corresponding to the signal S _K2 is assigned to channel 2, are outputted in a time division at each timing.

Thus, time division FF 18 ₁ to the key-on signal KON is inputted, time division FF 18 "H" level signal from the ₁ at the timing of channels 1 and 2 are output. Therefore, gate 31
Since There are opened at the timing of time division FF 18 ₁ of the output signal, the addition output of the adder 30 is input to the shift register 32 through the gate 31, after being shifted in synchronism with the clock phi, addition of the adder 30 The signal is fed back to the input terminal B and is output as envelope waveform data D _ENV indicating the current waveform level of the envelope waveform _ENV .

The envelope waveform data D _ENV is input to the comparison input terminal A of the comparator 35 and is compared with the output data of the level memory 26 which is input to the comparison input terminal B, in this case, the value 75. The value is input to the value detection circuit 33. At this time, since the key is turned on immediately, no match signal is output from the comparator 35, and no detection signal is output from the predetermined value detection circuit 33.

Therefore, addition output of the adder 30 becomes a sum output obtained by adding repeatedly rate for the envelope waveform data D _ENV, the envelope waveform data D _ENV is gradually increased at an inclination corresponding to the rate 80 r. This is done for each channel, in this case, for channels 1 and 2 in a time-sharing manner.

When the value of the envelope waveform data D _ENV becomes equal to the level 75 at the point 1, a match signal is output from the comparator 35 and input to the selector 46. Thus, the selector 46, the data input terminal D ₁ value, i.e., the adder 45
In this case, "1" is selected and output, and input to the shift register 47. This is for each channel
In this case, the processing is performed on channels 1 and 2 in a time division manner.

Therefore, the output data of the shift register 47, that is, the value 1
Are selected by the selector 48 and input to the rate memory 25 and the level memory 26. Then, the memory area 25 from the rate memory 25 and the level memory 26 ₅ and 26 ₅
The data of point 2 of this example, 60r and 100, respectively, are output. After passing through the selector 29, the value 60r is input to the addition input terminal A of the adder 30, and the value 100 is input to the comparison input terminal B of the comparator 35. Then, the same operation as in the case of point 1 described above is repeated, and envelope waveform data D _ENV is output from the shift register 32.
This is done for each channel, in this case, for channels 1 and 2 in a time-sharing manner.

The operation described above is performed in a time-division manner for each channel from point 1 to point 8, and when the value of the envelope waveform data D _ENV becomes a predetermined value (nearly zero), a detection signal is output from the predetermined value detection circuit 33, and D At -FF34, it is output after being delayed by 1/2 of the clock φ.

Then, the level of the envelope waveform data D _ENV point 8, in this case, to match the value 0, because the coincidence signal is output from the comparator 35, the reset signal S _R from the AND gate 36 is output, time division FF18 _{1-18 3} and the oR gate
Entered in 43. Thus, the time division FF 18 ₁ ~ 18 ₃ is reset, the predetermined time period "H" level signal is outputted from the OS 44, the shift register 47 is reset. The reset signal S _R, so is also input to the key-on-key-off processing circuit 15 via the OR gate 17, the key-on-key-off processing circuit 15 is also reset.

Before the envelope waveform data D _ENV is completely attenuated, the player performs a key release operation on a key corresponding to, for example, the E sound on the keyboard 14 so that the timing shown in FIG. in the fallen signal is output, the key-on-key-off processing circuit 15, as shown in FIG. 10 (d), the key-off signal KOF corresponding to the signal S _K2 is output assigned to channel 2.

Thus, when the key-off signal KOF is supplied to the dividing FF 18 _2, the timing of dividing FF 18 ₂ channels 2 when "H"
A level signal is output. Therefore, in the selector 46, the lower data of the address corresponding to the point 8 is selected and input to the rate memory 25 and the level memory 26. Thus, the data rate memory 25 and the memory area 25 from the level memory 26 ₅ and 26 ₅ points 8, in this case, -5R and 0 are output. And the value-
After passing through the selector 29, 5r is input to the addition input terminal A of the adder 30, and the value 0 is input to the comparison input terminal B of the comparator 35.

Therefore, in this case, the envelope waveform data D _ENV
Falls on a steeper curve than natural decay.

In addition, the above operation is performed in a time-division manner with eight independent sounds,
If the player presses the same key assigned to an existing channel in the key-on / key-off processing circuit 15 while all eight notes are sounding, the key-on / key-off processing circuit 15 assigns the key. The searched channel is searched and the quick dump signal DP is output at the timing of the channel.

Thus, divided FF 18 ₃ dump signal DP is input when, "H" level signal at the timing of the channel from the split FF 18 ₃ when is output. Therefore, the selector 29 selects the rapid damping value -100r, and the adder
It is input to 30 addition inputs A.

Therefore, in this case, the envelope waveform data D _ENV
Falls on a sharp curve.

Then, the key-on / key-off processing circuit 15 takes about 20 msec.
After the passage, the key-on signal KON is output again at the timing of the channel.

 Thereby, the same sound is reproduced again.

Since the musical tone signal generating circuit 3 ₁ and 3 ₂ and the envelope generator 16 ₁ and 16 ₂ are respectively provided,
For example, the in the organ tones in the envelope generator 16 ₁ to the envelope waveform ENV piano, by which the tone color strings to play with the envelope waveform ENV pipe organ in envelope generator 16 _2, tone signal generation circuit 3 ₁ tone envelope waveform ENV Organ is output musical tone signal MS ₁ piano from the tone color envelope waveform ENV is output musical tone signal MS ₂ pipe organ in strings from the musical tone signal generating circuit 3 _2, these tone signals MS ₁ and MS ₂ are mixed in the sound system 4, is output tone without the natural musical instrument.

Next, the performer enters the piano envelope waveform data D _ENV
The operation when freely setting the rate and level of the envelope waveform data _{DENV based on} the rate and the level will be described.

First, not shown By pressing the push switch 37 ₁ while pressing, rewriting means 2
Data stored in the buffer memory in the 7 and 28 in the rate memory 25 and the level memory 26 respective memory regions 25 ₁ and 26 ₁ are transferred respectively. Next, the player rewrites these eight-point rates and levels.
Arbitrarily set by 27 and 28. And not shown Press, rate memory 25 and the level memory 26 memory areas 25 ₇ and 26 ₇ to be stored in the buffer memory the rate and level are transferred, respectively.

Thus, to select the tone of the piano by pressing the push switch 37 _1, and select a rate and level of the envelope waveform ENV of the user by pressing the push switch 42 6 times, the player is playing timbre envelope waveform ENV piano A tone, which is a waveform freely set by the player, is output from the sound system 4.

As described above, the envelope waveform data D _ENV can be easily changed to that of another musical tone without changing the tone, so the organ envelope waveform ENV musical tone of the piano tone and the piano envelope piano tone of the organ tone are used. The tone of the waveform ENV, or the tone of the organ envelope waveform ENV can be generated with a brass tone.

If it is desired to further fine-tune the envelope waveform ENV, after changing the envelope waveform data D _ENV to that of another tone, the rewriting means 27 and 28 may finely set the parameters, that is, the rate and level. ,
The outline is set to the envelope waveform ENV of another tone, and fine adjustment can be fine-tuned by individual parameters. Therefore, the setting of the target envelope waveform parameter D _ENV can be performed quickly and easily.

Note that, in the above-described embodiment, the example in which the adder 30 was required to obtain the envelope waveform data D _ENV in the envelope generator 16 was shown. Therefore, the envelope waveform ENV changed linearly. Adder 30
, A multiplier may be used. In this case, the envelope waveform ENV changes exponentially.

Further, in the above-described embodiment, the example in which the arithmetic type envelope generator 16 is used has been described, but a memory type envelope generator may be used.

[Effects of the Invention] As described above, according to the present invention, there is an effect that the envelope waveform can be easily changed without changing the tone color of the tone signal.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is a block diagram showing a configuration of an envelope generator 16, FIG. FIG. 5 and FIG. 5 show an example of the configuration of the rate memory 25 and the level memory 26, respectively.
Fig. 6A shows an example of the envelope waveform ENV of the piano. Fig. 6B shows an example of the rate and level of the piano. Fig. 7A shows the envelope waveform of the organ.
FIG. 7 (b) shows an example of an organ rate and level, FIG. 8 (a) shows an example of a string envelope waveform ENV, and FIG. 8 (b) shows an example of ENV. FIG. 9 shows an example of the display on the display 50, and FIG. 10 shows an example of the waveforms of the signals S _K1 and S _K2 , the key-on signal KON and the key-off signal KOF. FIG. 11, FIG. 11 is a block diagram showing a configuration example of a conventional electronic musical instrument, FIG. 12 is a waveform diagram showing an example of an envelope waveform ENV, and FIG. 13 is a front view showing a configuration example of a parameter setting operation section 7. . 3 ₁ , 3 ₂ ... tone signal generation circuit, 14 ... keyboard, 15 ... key-on / key-off processing circuit, 16 ₁ , 16 ₂ ... envelope generator, 25 ... rate memory, 26 ... level memory, 27, 28 Rewriting means, 37 Tone selection switch group, 3
7 _{1 to} 37 ₇ , 41, 42 ... push switch, 38 ... address generation circuit, 40 ... address counter.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasushi Sakurai 10-1 Nakazawa-cho, Hamamatsu-shi, Shizuoka Prefecture Inside Yamaha Corporation (56) References JP-A-61-45289 (JP, A) 58499 (JP, U) Japanese Patent Publication No. 1-36957 (JP, B2) (58) Field surveyed (Int. Cl. ⁷ , DB name) G10H 1/057 G10H 1/053

Claims (1)

(57) [Claims] 1. A storage means for storing a plurality of envelope parameters for generating an envelope waveform for each timbre in association with each timbre, a tone color of a tone signal and an envelope waveform corresponding to the tone color of the tone signal. Selecting means for reading from the storage means a plurality of envelope parameters corresponding to the tone specified by the selecting means; and an envelope waveform for generating an envelope waveform based on the plurality of read envelope parameters. Generating means, a tone signal generating means for generating a tone signal based on the envelope waveform generated by the envelope waveform generating means and the timbre specified by the selecting means, each timbre and a plurality of envelope parameters in the storage means, Without changing the association of Changing a plurality of envelope parameters corresponding to a different timbre from the stored timbre from the storage means and supplying the envelope parameters to the envelope waveform generating means, thereby changing an envelope waveform generated by the envelope waveform generating means. An electronic musical instrument, wherein a tone parameter for designating a tone is not changed even if the envelope waveform is changed by the changing means.