JPH0432398B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a musical tone generating device that can control the volume, timbre, etc. of a musical tone in accordance with the touch response of a performance operator.

[Prior Art] Conventionally, as a sound source for an electronic musical instrument, a method is known in which waveform information is stored in advance and the musical sound waveform is read out as it is to form a musical tone signal. According to this method, musical tones of fairly high quality can be obtained, but in recent years, it has become possible to add touch data detected from the musical instruments' performance controls, such as the operating speed of the keyboard, to the generated musical tones. Attempts have begun to be made to reflect this. One way to do this is to vary the shape of a waveform control signal such as an envelope waveform that is multiplied by the read musical sound waveform based on the touch data, for example, to vary the slope of the attack part of the envelope waveform based on the touch data. The following configurations are possible.

[Problems with the prior art] However, even if the shape of a single waveform control signal is varied, there is a limit to how much the shape can change, and it is impossible to make the touch data of the controller more closely reflect the musical tone. . Naturally, as a means to solve this problem, a method can be considered in which a number of waveform control signals with completely different shapes are provided, and these are selected and output based on touch data, but this method is limited by the storage capacity within the device. There is a limit due to the size of
If the number of stored waveform control signals is too small, there is a problem that subtle changes in touch data will not be reflected. In addition, in any of the above methods, simply changing the shape of the waveform of a single waveform control signal that is multiplied by the waveform information of the musical tone will change the volume of the musical tone relatively clearly, but the timbre will change relatively clearly. There is also the problem that there are few changes.

[Object of the Invention] The present invention provides a musical tone generating device that has a relatively simple and small-scale configuration and is capable of greatly varying the tone and volume of a musical tone by reflecting the touch response of a performance operator. The purpose is to

[Summary of the Invention] In order to achieve the above object, a performance controller and a waveform are divided into a plurality of steps, waveform information for each step is stored, and the waveform information for each step is stored in response to the operation of the performance controller. a waveform generating means for outputting waveform information; and a waveform control signal capable of generating a plurality of types of waveform control signals, and generating one of the plurality of types of waveform control signals in response to the timing at which the waveform information for each step is output from the waveform generating means. a waveform control signal generation means for selecting and outputting one waveform control signal; a touch data creation means for obtaining touch data in accordance with the operation mode of the performance operator; and a touch data creation means for generating the waveform control signal based on the touch data from the touch data creation means. A control means for variably controlling and outputting at least one waveform control signal among the plurality of types of waveform control signals outputted from the generation means; a waveform control signal from the control means and waveform information outputted from the waveform generation means; The present invention is characterized in that it has a multiplication means for multiplying , and a musical tone signal generation means for generating a musical tone signal based on the output signal from the multiplication means.

[First Embodiment] Various embodiments of the present invention will be described below with reference to the drawings. 1 to 12 show a first embodiment.

In FIG. 1, a keyboard 1 is provided with a plurality of keys like a normal electronic musical instrument, and output signals from each key are input to a key information detection circuit 2 and a touch data detection circuit 3. The key information detection circuit 2 detects key information representing the pitch of the key based on the signal from the key, and supplies it to the waveform generation circuit 4, as well as outputs a signal key on indicating the start of key depression to generate an envelope. The signal is applied to the circuit ( ) 5 and the envelope generating circuit ( ) 6 . On the other hand, the touch data detection circuit 3 detects the strength of the key operation based on the signal from the key.
In other words, it outputs touch data according to the touch response and sends it to the envelope generating circuit ().
Give to 5. The envelope generating circuit ( ) 5 and the envelope generating circuit ( ) 6 also receive the output signal of the tone switch on the switch section 7 provided near the keyboard 1, and the output signal varies depending on the operating state. Each envelope waveform is generated and applied to the selector 8. The above envelope waveform is generated by the envelope generation circuit ()5,
After the signal key on is input to each of ()6, the generation begins.

The waveform generation circuit 4 generates a musical sound waveform with a frequency according to the key information and supplies it to the multiplier 9, and also selects an envelope waveform generated by the envelope generation circuit (2000) 5, or selects an envelope waveform generated by the envelope generation circuit (2012). It outputs a signal select instructing whether to select the envelope waveform generated by the selector 8 and supplies it to the selector 8. Selector 8 is a signal
One of the envelope waveforms is selected according to the contents of select, and it is output to the multiplier 9. The multiplier 9 multiplies the input musical sound waveform and the selected envelope waveform, and produces the result data (musical sound signal).
is applied to the D/A converter 10 to convert it into an analog value and applied to the timbre forming circuit 11. Tone formation circuit 11
consists of a filter and the like, and after forming a timbre on the above-mentioned analog value musical tone signal, it is emitted as a musical tone from a sound generation circuit 12 consisting of an amplifier and a speaker.

Next, specific circuits of the envelope generating circuit ( ) 5 and envelope generating circuit ( ) 6 will be explained with reference to FIG. Touch data from the touch data detection circuit 3 is input to the latch 15 in the envelope generation circuit ( ) 5 and latched therein. The touch data is input to one end of the comparator 16 as well as to the decoder 17. The output of the envelope switch of the switch section 7 is also input to this decoder 17, and a set output signal from a set output terminal Q of an SR type flip-flop, which will be described later, is also input, and the decoder 17 decodes the latch data into a corresponding value. It is given to the envelope clock generator 18. The envelope clock generator 18 generates an envelope clock with a frequency corresponding to the input decoded value, and passes it through an AND gate 19 to the +1 of the envelope counter 21.
It is applied to the input terminal, and also applied to the -1 input terminal via the AND gate 20. The envelope counter section 21 counts up the envelope clock when it is input to the +1 input terminal, and counts up the envelope clock when it is input to the +1 input terminal.
When an envelope clock is input to the 1 input terminal, it is counted down, and each count value, that is, the envelope waveform is applied to the other end of the comparator 16 and the selector 8. The comparator 16 compares the latch data input to both input terminals with each value of the envelope waveform, and when the two match, generates a signal E, which is applied to the reset input terminal R of the SR flip-flop 22 to reset it. A signal key on, which is output when a key is pressed, is input to the set input terminal S of the flip-flop 22, and is set when the key is pressed. The set output signal from the set output terminal Q is inputted to the decoder 17, and also directly inputted to the AND gate 19 and inputted to the AND gate 20 via the inverter 23 for gate control.

The envelope clock generating section 25 in the envelope generating circuit ( ) 6 receives the output of the envelope switch of the switch section 7 and a set output signal from a flip-flop 29, which will be described later, and generates an envelope clock of a corresponding frequency. And this envelope clock is ANDGATE 2
6 to the +1 input terminal of the envelope counter section 28, and -1 to the AND gate 27.
It is input to the input terminal and is counted up or down. The count value is then sent to the selector 8 as an envelope waveform. Further, when a carry occurs in the count value, a signal C is outputted and applied to the reset input terminal R of the SR type flip-flop 29 to reset it. The set input terminal S of this flip-flop 29 has the above-mentioned signal.
It is set when key on is input and the key is pressed. The set output signal outputted from the set output terminal Q of the flip-flop 29 is applied to the envelope clock generator 25 and also to the AND gate 26.
The signal is input directly to the AND gate 27 through the inverter 30 to control the respective gates.

Next, the operation of the first embodiment will be explained. now,
It is assumed that the waveform generating circuit 4 generates a waveform as shown in FIG. 3 because a predetermined tone switch (not shown) of the switch section 7 is selected. This waveform consists of a total of 8 steps, of which the 1st, 2nd, and 3rd steps have positive amplitude values;
The 6th and 7th steps have negative amplitude values, and the 8th step has a positive amplitude value. Also 1, 2, 3, 5,
The parts indicated by symbols in the 6th and 7th steps are as follows:
It shows that the envelope is controlled by the envelope waveform outputted by the envelope generating circuit ( ) 6 shown in FIG.
The part indicated by the symbol at the step indicates that the envelope is controlled by the envelope waveform output from the envelope generating circuit ( ) 5 shown in FIG. 4A. As described above, the envelope generating circuit ( ) 5 generates the envelope waveform shown in FIG. As a result, the slope of the attack portion changes while remaining constant. On the other hand, the envelope waveform of FIG. 4b generated by the envelope generating circuit ( ) 6 is fixedly output.

Now, when a certain key on the keyboard 1 is turned on, the output signal of that key is input to the key information detection circuit 2 and the touch data detection circuit 3. The key information detection circuit 2 not only outputs key information representing the pitch of the operating key and provides it to the waveform generation circuit 4, but also outputs a single key on signal when the key is turned on and transmits it to the envelope generation circuit ( )5 and envelope generation circuit ()
6 and drives each circuit 5 and 6 simultaneously to start generating the envelope waveform shown in FIG. 4a and the envelope waveform shown in FIG. 4b, respectively. The touch data from the touch data detection circuit 3 is input to the envelope generating circuit ( ) 5, and this touch data is proportional to the strength of the key operation, that is, the magnitude of the touch response. As described above, the envelope generation circuit ( ) 5 outputs an envelope waveform whose attack time Ta changes in proportion to the strength of the key operation. And envelope generation circuit () 5, envelope generation circuit () 6
The envelope waveforms respectively output by are input to the selector 8, and the signal output by the waveform generation circuit 4 is input to the selector 8.
Depending on the contents of select, one of the envelope waveforms is selected and output and applied to the multiplier 9. In this case, the signal select is output, for example, as a binary logic level "1" while the waveform generating circuit 4 is outputting the 1st, 2nd, 3rd, 5th, 6th, and 7th steps of the musical sound waveform shown in FIG. The envelope waveform from the envelope generation circuit ( ) 6 is selectively output. On the other hand, during the output of the 4th and 8th steps of the musical sound waveform in Figure 3, it is output as "0" and the envelope generation circuit ()
The envelope waveform from 5 is selectively output. Therefore, in the multiplier 9, when the waveform generation circuit 4 outputs the waveform of each step 1, 2, 3, 5, 6, and 7 of the waveform in FIG. 3, it multiplies it by the envelope waveform in FIG. 4b, The resulting data is provided to the D/A converter 10. On the other hand, waveforms 4 and 8 in Figure 3
When the step waveform is output, it is multiplied by the envelope waveform shown in FIG. That is, D/
A musical tone signal to which different envelope waveforms are added depending on the portion of the waveform shown in FIG. 3 is input to the A converter 10, and is converted into an analog value. Then, the analog value musical tone signal is further processed by the tone forming circuit 1.
1 to form a tone, which is emitted from the sound generation circuit 12 as a musical tone.

The operations of the envelope generating circuit () 5 and the envelope generating circuit () 6 will be explained in more detail with reference to FIG.
is latched by latch 15 in
and the decoder 17. Further, the signal key on is output as a "1" signal, causing both flip-flop 22 and flip-flop 29 to be set. Therefore, the set output "1" opens AND gate 19, closes AND gate 20, and closes AND gate 2.
6 is opened, and AND gate 27 is closed.

The output of the envelope switch of the switch section 7 and the set state "1" of the flip-flop are input to the decoder 17, so that a decoded output corresponding to the envelope waveform shown in FIG. 4a is sent to the envelope clock generator 18. give. Therefore, the envelope clock generating section 18 starts outputting an envelope clock of the corresponding frequency, and supplies it to the +1 input terminal of the envelope counter section 21 via the AND gate 19 to cause it to be counted up.

On the other hand, the envelope clock generating section 25 in the envelope generating circuit ( ) 6 also receives the output of the envelope switch of the switch section 7 and the set output "1" of the flip-flop 29, so that the output as shown in FIG. 4b is input. , the envelope clock for the envelope waveform whose waveform is fixed is outputted and applied to the +1 input terminal of the envelope counter unit 28 via the AND gate 26 to cause it to be counted up.

The envelope counter section 21 measures the attack time.
The up-count operation is executed until Ta ends, and the count value during that time, that is, the envelope waveform data, is sent to the selector 8, and the comparator 1
6 and is compared with the touch data from latch 15. When the count value matches the touch data, the comparator 16 outputs a signal E of "1".
is output to reset the flip-flop 22. Therefore, from then on, AND gate 19 closes,
Then, the AND gate 20 is opened and the envelope clock begins to be input to the -1 input terminal of the envelope counter section 21 via the AND gate 20, and then begins to be counted down. The frequency of the envelope clock at this time is the same as at the time of attack. When the signal E is output as "1", the attack time Ta of the envelope waveform shown in FIG.
This attack time Ta is proportional to the size of the touch data; therefore, if the key operation is strong, the attack time Ta will be long, and if the key operation is weak, the attack time Ta will be short. When the down-count operation starts after the attack time Ta ends, the count value becomes smaller and the amplitude value of the envelope waveform approaches "0". Once it becomes "0", it remains "0" as shown in FIG. 4a.

On the other hand, in the envelope counter section 28, the fourth
When the value of the envelope waveform shown in FIG. b reaches a predetermined value, a carry signal C ("1") is output, and the flip-flop 29 is reset. Therefore, from now on,
AND gate 26 is closed, and AND gate 2 is closed.
7 is opened, and the envelope clock is connected to the - of the envelope counter section 28 via the AND gate 27.
1 input terminal and starts counting down. Therefore, thereafter, the count value becomes smaller and the amplitude value of the envelope waveform decreases.
At this time, the frequency of the envelope clock input to the -1 input terminal is the same as that input to the +1 input terminal.

Figures 5, 6, and 7 show, respectively, when the touch data is large when the key is struck strongly, when the touch data is medium when the key is struck normally, and when the touch data is medium when the key is struck normally. 4 shows how the envelope waveforms a and b in FIG. 4 are applied to the waveform in FIG. 3 when the touch data is small. Note that in both FIGS. 5 to 7, the period from when the key is turned on until the volume level becomes "0" after the key is turned off is shown divided into nine stages. As can be seen from the drawing, when the key is hit strongly as shown in Fig. 5, the attack time Ta of the envelope waveform of Fig. 4a is long, and the attack time Ta of the envelope waveform of Fig. 3 is applied to the four steps of the waveform of Fig. 3. It can be seen that the 8th and 8th steps are long up to the third stage state, and the amplitude level is much larger than in the cases of FIGS. 6 and 7. As shown in Figs. 6 and 7, when the key is struck normally or even more weakly, the attack time Ta becomes gradually smaller, so the envelope waveform shown in Fig. 4a also ends earlier. It can also be seen that the amount of time it takes is shallower. In this way, it can be seen that in any case of FIGS. 5, 6, and 7, both the volume and timbre of the generated musical tones change depending on the magnitude corresponding to the touch response.

The waveform generating circuit 4 in FIG. 1 generates the waveform shown in FIG. 8 instead of the waveform shown in FIG. An envelope waveform whose attack part is variable is added, and the second half of the waveform (indicated by a symbol in the figure) is a fixed envelope waveform regardless of the touch data in Figure 9b. Changes in volume and tone will be explained with reference to FIGS. 10, 11, and 12.

Therefore, when the tone switch in the switch section 7 is switched, the waveform shown in FIG. 8 can be generated from the waveform generation circuit 4, and the waveform shown in FIG.
1 can generate the envelope waveform shown in FIG. 9a, and the envelope counter section 28 can generate the envelope waveform shown in FIG. 9b.
Envelope waveforms can be generated. In this case, since the frequency of the envelope clock output from the envelope clock generator 18 is large, the attack level of the variable envelope waveform shown in FIG. 9a changes depending on the magnitude of the touch response, but the attack time An envelope waveform close to "0" is used, almost regardless of the magnitude of the touch response.

Therefore, when a certain key is operated and the signal key on for that key is output as "1" and the flip-flops 22 and 29 are both set, the envelope counter section 21 generates a clock faster than the envelope waveform of FIG. 4a. is applied to start up counting operation. The speed of this up-count operation is proportional to the magnitude of the touch data applied to the latch 15, and the higher the value of the touch data, the faster it becomes. When the attack section ends, the comparator 16 generates a signal E of "1" to reset the flip-flop 29, so the envelope counter section 21 starts a down-count operation, but the envelope clock applied during this down-count is When the set signal from the flip-flop 22 becomes "0", the frequency of is switched to a much lower frequency than that during up counting, and as shown in FIG. 9a, the amplitude level of the decay section gradually increases. descend. When the count value reaches "0", that state is maintained.

On the other hand, in the envelope counter section 28, the frequency of the envelope clock during up-counting to create the attack section is significantly higher than that in the case of FIG. 4b. When the up count ends, the envelope counter unit 28 generates a carry signal C (“1”) and flips the flip-flop 29.
is reset, and the envelope counter section 21 starts counting down. The speed of this down-count operation is much slower than the up-count operation because the set output of the flip-flop 29 becomes "0", and the count value is gradually decreased until the key is turned off.
As shown in FIG. 9b, the amplitude level of the decay section also gradually decreases.

In the case of the envelope waveform shown in Figures 9a and b, Figure 10 shows that when the key is hit strongly, the 11th
The figure shows changes in volume and timbre with respect to the waveform in FIG. 8 when the key is struck normally, and FIG. 12 shows the change in tone when the key is struck weakly. As can be seen from each figure, both the volume and timbre of the generated musical tones change depending on the magnitude of the touch response.

[Second Embodiment] Next, a second embodiment will be described with reference to FIGS. 13 to 25. Note that circuit parts that are the same as those in the first embodiment are given the same numbers and their explanations will be omitted. The differences between the second embodiment and the first embodiment are as follows.
In the first embodiment, only one of the two types of envelope waveforms was changed in proportion to the touch response, but in this second example, both of the two types of envelope waveforms were changed. In that case, two data conversion sections are newly installed to convert one touch data into two different data.

That is, in FIG. 13, touch data output from the touch data detection circuit 3 is input to a data conversion section ( ) 33 and a data conversion section ( ) 34, respectively. The conversion characteristics of the data conversion unit ( ) 33 and the data conversion unit ( ) are set as shown in FIG. 5 for slightly weak, normal, slightly strong, and strong
When one state increases, the size of the converted data increases almost proportionally. On the other hand, the conversion characteristic of the data conversion unit ( ) 34 is that when the touch data increases in the five states described above, the size of the converted data increases somewhat suddenly from weak to slightly weak. When the power is a little weak, the size of the converted data remains constant until it reaches a state where it is a little strong, and its value is the same as when the data converter ( ) 33 is in a normal state.
The size of the converted data increases somewhat rapidly between times when it is slightly strong and times when it is strong.

The conversion output of the data conversion unit ( ) 33 is input to the envelope generation circuit ( ) 5A, and the conversion output of the data conversion unit ( ) 34 is input to the envelope generation circuit ( ) 6A. Therefore, envelope generation circuit () 5A, envelope generation circuit ()
As shown in FIG. 14, the circuit 6A is composed of exactly the same circuit as the envelope generating circuit ( ) 5 of the first embodiment.

Next, the pattern of changes in the volume and timbre of the generated musical tones according to the second embodiment will be explained. Now, the waveform shown in FIG. 3 used in the first embodiment is generated from the waveform generation circuit 4, and the envelope waveforms shown in FIGS. As an example, the case where the envelope generation circuit ( ) 6A is outputted in accordance with each converted data of the corresponding data conversion section ( ) 33 or data conversion section ( ) 34 will be described.

First, when the key is hit strongly and the touch data output by the touch data detection circuit 3 is maximum, the 15th
As can be seen from the figure, the data conversion unit () 33,
Each of the converted data output by the data converter ( ) 34 is the maximum, and both values are approximately equal, or the output of the data converter ( ) 33 is a slightly larger value. Therefore, the envelope waveform in Figure 4b is added to the 1st, 2nd, 3rd, 5th, 6th, and 7th steps of the waveform in Figure 3, and the envelope waveform in Figure 4a is added to the 4th and 8th steps. When this happens, the state will be as shown in FIG.

That is, since the maximum conversion data mentioned above is input to the envelope generating circuit (2) 5A, the envelope waveform shown in FIG. 4a in which the attack level, that is, the attack time is the maximum, is created by the operation described above. Also envelope generation circuit ()
6A also creates the envelope waveform shown in FIG. 4b, which has the highest attack level than in other cases, by the same operation. Therefore, the 4th and 8th steps of the waveform of FIG. 3 to which the envelope waveform of FIG. 4a is added reach a maximum in the third state after key-on, as shown in FIG. 16. On the other hand, 1, 2,
For the 3rd, 5th, 6th, and 7th steps, the rise of the attack part is a little slow, so it reaches its maximum at the 5th step after the key is turned on, but compared to when the key is hit normally, which will be described later. Its maximum level value is the largest.

FIG. 17 shows the state that changes when the key is struck a little harder. In this case, as can be seen from FIG. 15, the converted data of the data converter ( ) 33 becomes a slightly smaller value than when the key is hit strongly. Further, the converted data of the data converter ( ) 34 is about half the value when the key is hit strongly. Therefore, the fourth and eighth steps reach the maximum level in the third state after key-on, but the values are smaller than in the case of FIG. 16. Also 1, 2,
The 3rd, 5th, 6th, and 7th steps are almost the same as the 1st step.
In the case of FIG. 6, it changes in the same way, but the maximum level is about half smaller than in the case of FIG. 16.

FIG. 18 shows the case where the key is hit normally. In this case, as can be seen from FIG. 15, the converted data of the data converter ( ) 33 is about half of the maximum level, and the converted data of the data converter ( ) 34 is the same as when the previous key was hit a little harder. There is almost no change, and the values of both converted data are almost equal. Therefore, the state of change at the 4th and 8th steps is the 16th step.
17, but the maximum level value is about half of that in FIG. 16. Also, 1,
The changes in the 2nd, 3rd, 5th, 6th, and 7th steps are the same as in the case of FIG. 17 in terms of level change states.

FIG. 19 shows the case where the key is struck slightly weakly.
In this case, as can be seen from FIG.
%, and the converted data of the data converter ( ) 34 is about half of the maximum level, which is almost the same as in the cases of FIGS. 17 and 18. Therefore, in the fourth and eighth steps, the level reaches its maximum in the fourth state after key-on, and the speed of change becomes slow. Moreover, the value of the maximum level becomes even smaller. Further, the level changes at the 1st, 2nd, 3rd, 5th, 6th, and 7th steps are almost the same as those in FIGS. 17 and 18.

FIG. 20 shows the case where the key is hit weakly. In this case, the converted data of the data converter ( ) 33 is approximately "0", and the converted data of the data converter ( ) 34 is slightly larger than that. Therefore,
In the 4th and 8th steps, the level immediately goes to "0" after the key is turned on, and then the 1st, 2nd, 3rd, 5th,
At the 6th and 7th steps, the maximum level becomes smaller as shown in FIG. 19, and reaches "0" earlier.

In this way, as in the case described above, both the volume and timbre of the resulting musical sound waveform change in accordance with the touch response.

21 to 25 show that in the second embodiment, the waveform generating circuit 4 generates the waveform shown in FIG. 8 in the first embodiment, and the first half thereof is output by the envelope generating circuit () 5A. The second half shows changes in the volume and timbre of the resulting musical tone when the envelope waveform shown in FIG. 9a is added, and the envelope waveform shown in FIG. . Then the 21st
Figure 22, Figure 23, Figure 24, and Figure 25 show the results when the key is struck strongly, slightly hard, normal, slightly weakly, and weakly, respectively. The content is the same as the example already described, and detailed explanation of the state change will be omitted.

[Effects of the Invention] As described above, according to the present invention, at least one waveform control signal among a plurality of types of waveform control signals is variably controlled based on the touch data corresponding to the operation mode of the performance controller, and the waveform The information is multiplied, and since these multiple waveform control signals are output by selecting one waveform control signal for each step of the waveform information, both the timbre and volume can be greatly changed to reflect the touch response. I can do it. Furthermore, the number of waveform control signals to be outputted is much smaller than that in a case where the waveform control signals are switched according to touch data, and the memory capacity is also small. Furthermore, since the waveform control signal multiplied by each step of the waveform is switched, the timbre and volume similarly change greatly, making it possible to generate richer musical tones than ever before.

[Brief explanation of drawings]

1 to 12 show a first embodiment of the present invention, FIG. 1 is an overall circuit configuration diagram thereof, and FIG. 2 is a specific circuit of an envelope generation circuit () 5 and an envelope generation circuit () 6. 3 is a diagram of the waveform output by the waveform generation circuit 4, FIGS. 4a and 4b are diagrams showing two types of envelope waveforms, and FIG.
Figures 6 and 7 are the waveforms of Figure 3 and 4, respectively.
A diagram showing how the musical sound waveform changes when the key is struck strongly, normally, or softly when the envelope waveforms shown in Figures a and b are added. Figure 8 is a diagram of other waveforms. Figure 9 a , b are diagrams of the other two types of envelope waveforms, and Figures 10, 11, and 12 are the keys when the envelope waveforms of Figure 9 a and b are added to the waveform of Figure 8, respectively. Figures 13 to 25 are diagrams showing changes in musical sound shapes when struck strongly, normally, or weakly.
An example is shown, FIG. 13 is a diagram of the overall circuit configuration, and FIG. 14 is an envelope generation circuit ()5.
A. A specific circuit diagram of the envelope generation circuit () 6A; FIG. 15 is a diagram showing the conversion characteristics of the data conversion section () 33 and the data conversion section () 34; FIGS. 16, 17, and 18; Figures 19 and 20
The figures show cases in which the envelope waveforms a and b in Fig. 4 are added to the waveform in Fig. 3, and when the key is pressed strongly,
Figures 21 and 22 show changes in musical sound shapes when struck somewhat strongly, normally, somewhat weakly, and weakly.
8, 23, 24, and 25 respectively.
FIG. 9 is a diagram showing changes in musical sound waveforms when a key is struck strongly, somewhat strongly, normally, somewhat weakly, and weakly when the envelope waveforms shown in FIGS. 9a and 9b are added to the waveform shown in the figure. 1...Keyboard, 2...Key information detection circuit, 3...
Touch data detection circuit, 4, 4A, 4B... Waveform generation circuit, 5, 5A, 6, 6A... Envelope generation circuit, 7... Switch section, 8... Selector,
9... Multiplication section, 10... D/A converter, 11...
Tone forming circuit, 12... Sound generation circuit, 33, 34...
...Data conversion section.

Claims (1)

[Scope of Claims] 1. A performance operator, and a waveform that divides a waveform into a plurality of steps, stores waveform information for each step, and outputs waveform information for each step in response to the operation of the performance operator. a generating means capable of generating a plurality of types of waveform control signals, and selecting and outputting one of the plurality of types of waveform control signals in response to the timing at which waveform information for each step is output from the waveform generating means. a waveform control signal generating means for generating touch data in accordance with the operating mode of the performance controller; control means for variably controlling and outputting at least one waveform control signal among the various waveform control signals; and multiplication means for multiplying the waveform control signal from the control means by the waveform information output from the waveform generation means. , and musical tone signal generation means for generating a musical tone signal based on the output signal from the multiplication means. 2. The touch data creation means outputs a plurality of mutually independent touch data corresponding to the performance mode of the performance operator, and the control means outputs a plurality of touch data from the waveform control signal generation means based on the plurality of touch data. 2. The musical tone generating device according to claim 1, further comprising means for respectively controlling a plurality of types of waveform control signals to be output.