JPH0580754A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To improve the performance expressing ability by deciding that the same key is operated successively in a specific time and performing control for automatically adding panning effect or other musical effect according to a musical performance pattern. CONSTITUTION:Plural pad switches P1-P8 for indicating percussion instrument sounds are provided as performance operation elements and the control for adding sound image localization movement effect (panning effect) as specific musical effect is performed. A timer clock generator 15 generates a clock signal for initiating a timer interrupt in the program processing of a microcomputer 10 and its frequency is optionally varied to optionally adjust the length of the specific time for deciding successive beating on a pad. When sound generation indication information is generated by special performance wherein the same sound is successively generated such as tremolo performance, it is decided that the same sound generation indication information is supplied at intervals within the specific time and the specific musical sound effect adding control over a musical sound signal is performed in response to the decision making.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument in which a musical tone effect is automatically added according to a musical tone performance mode.

[0002]

2. Description of the Related Art As a device for realizing a sound image localization (pan) effect in an electronic musical instrument or the like, for example, a device in which the position of the sound image localization of the performance sound is sequentially moved for each key depression operation on the keyboard, By controlling the position of the sound image localization to be different between when the key is pressed and when the key is released, a device that allows the sound image localization of the performance sound to swing to the left or right depending on whether the key is pressed or released, or by a key pressing operation, etc. 2. Description of the Related Art There are conventionally known devices that change the position of sound image localization of a generated sound each time a sounding instruction is given.

[0003]

SUMMARY OF THE INVENTION With a system in which the position of the sound image localization of the performance sound is sequentially moved for each key depression operation, the key depression operation is performed no matter what key depression performance is performed. The position of the sound image localization always moves mechanically every time it is performed. Therefore, it is not possible to control whether or not the sound image localization is moved according to the key-press performance form, and it is not possible to express musical performance. For example, if you can control the movement of the sound image localization automatically when the keys are repeatedly struck with the tremolo method, but do not perform the movement control of the sound image localization during the normal keypress method, if you can control it, you can express a musical performance. This is preferable because it can increase the force, but the conventional ones cannot. In addition, even if the sound image localization of the performance sound is to be swung to the left or right in response to key depression or key release, the sound image localization will always be swung to the left or right no matter what key press performance is performed. Therefore, the performance controllability was poor and the musical performance expression was poor. Similarly, even in the case where the position of the sound image localization of the generated sound is changed every time the pronunciation instruction is given, the sound image localization always changes randomly, so the controllability is poor and His will was not reflected and he lacked in musical performance expression. The present invention has been made in view of the above-mentioned points, and by performing control to automatically add or not to add a musical tone effect in accordance with a musical tone performance form, performance expressing power can be improved. It aims to provide enhanced electronic musical instruments.

[0004]

SUMMARY OF THE INVENTION An electronic musical instrument according to the present invention comprises a sounding instruction information generating means for generating sounding instruction information for instructing the generation of a musical sound, and a musical sound for generating a musical tone signal corresponding to the sounding instruction information. A signal generating means, a judging means for judging whether the same sounding instruction information is given at an interval within a predetermined time, and the same sounding instruction given at an interval for the predetermined time according to the judgment of the judging means. In response to at least one of the information, there is provided a tone control means for performing a predetermined tone effect imparting control on the tone signal generated corresponding to the sounding instruction information.

[0005]

When the pronunciation instruction information is generated in accordance with a special performance method that continuously produces the same sound such as a tremolo playing method or a drum rolling playing method, the determination means gives the same sounding instruction information at intervals within a predetermined time. To judge. In response to this determination, the musical sound control means responds to at least one of the same sounding instruction information given at intervals within the predetermined time, with respect to the tone signal generated corresponding to the sounding instruction information. A predetermined musical sound effect addition control is performed. On the other hand, when the pronunciation instruction information is generated in accordance with the normal playing style, it is not determined that the same pronunciation instruction information is continuously given at intervals within a predetermined time, and therefore, the predetermined tone effect imparting control is not performed. Not applied. Therefore, it becomes possible to automatically control the addition or non-addition of the musical tone effect according to the musical tone performance form, and the musical performance expressing ability can be enhanced.

Next, some embodiments of the present invention will be briefly illustrated. As an example, the sounding instruction information generating means has a plurality of performance operators and generates the sounding instruction information in response to the operation of the performance operators. In this case, since the tone generation instruction information is generated in response to the manual performance by the performer and the tone effect is automatically added, the player's intention can be reflected. An example of the performance operator may be an operator (for example, a pad operator) for instructing generation of percussion instrument sound. In that case, for example, when a performance is performed in which the same operator is swiftly hit like a rolling performance, it is possible to automatically control the addition of the musical tone effect. Another example of the performance operator may be a key for instructing the generation of a scale note. In this case, when a performance is performed in which the same key is repeatedly tapped, such as a tremolo playing method, it is possible to automatically control the addition of the musical tone effect. As another example, a touch detection unit for detecting an operation touch applied to the performance operator is further provided, and the tone control unit detects the touch detection unit when performing the predetermined tone effect imparting control. The tone effect application control may be performed in consideration of the touch. By doing so, it is possible to perform control that further reflects the player's will.

As another example, the sounding instruction information generating means may have means for generating automatic performance information, and generate the sounding instruction information as the automatic performance information. Generally, in other cases such as automatic bass chords and automatic arpeggios, other automatic accompaniment or automatic rhythm performance, it is not possible to automatically add or not add a musical sound effect in accordance with the performance style of the automatic performance sound. Not not. Therefore, by applying the present invention to these automatic performance sounds as well, it becomes possible to perform automatic addition control of the musical sound effect according to the performance form, and enhance the performance expression power. As another example, the sounding instruction information generating means may include means for inputting a sound signal from the outside and means for generating the sounding instruction information based on the input sound signal. By doing so, not only the keyboard but also another appropriate performance operator can be used as the sound input instructing means. For example, it is possible to pick up a sound played by a guitar and generate sound generation instruction information in MIDI format or the like based on the picked up sound signal. Then, a musical sound effect is automatically generated according to the tremolo performance of the guitar. It becomes possible to perform additional control, and it is possible to enhance the performance expression performance of an externally input sound when it is played by an electronic musical instrument.

As an example, the tone control means may control the sound image localization movement effect (pan effect) according to the determination result. By doing so, it is possible to perform sound image localization control according to the playing form, and it is possible to perform sound image localization movement effect imparting control that is rich in controllability and reflects the player's will, and to enhance performance expression power. As another example, the tone control means may control the sustain of the volume envelope according to the determination result. Then, it is possible to perform the sustain control according to the performance form, the controllability is enhanced, and the sustain effect imparting control that reflects the intention of the performer can be performed, and the performance expressing ability can be enhanced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings. --First Embodiment-- FIG. 1 is a hardware configuration diagram of an electronic musical instrument according to the first embodiment. In this embodiment, a plurality of pad switches P1 to P for instructing percussion instrument sounds as performance operators.
8 is provided, and a control for applying a sound image localization movement effect (pan effect) as a predetermined musical sound effect is performed. The microcomputer 10 including the CPU 11, the ROM 12, the RAM 13 and the like performs various processes and controls. A block 14 collectively shows other operators other than the pad switches, and includes switches for assigning desired percussion instrument sounds to the respective pad switches P1 to P8 and various other switches.

The timer clock generator 15 generates a clock signal for applying a timer interrupt in the program processing by the microcomputer 10. The frequency of the interrupt clock generated by the timer clock generator 15 can be arbitrarily changed by the setting switch provided in the block 14 of the other operator group. As a result, the length of the predetermined time for determining the repeated hits of the pad can be arbitrarily adjusted. The percussion instrument sound source circuit 16 is responsive to the operation of the pad switches P1 to P8 to generate a musical tone signal of a percussion instrument sound assigned to the pad switches. In order to control the sound image localization, the same percussion musical tone signal is volume-controlled for sound image localization and is generated in the left and right two channels, and is output from the left and right speakers 18R and 18L via the amplifiers 17R and 17L.

FIG. 2 schematically shows an example of a main routine executed by the microcomputer 10. After performing a predetermined initial setting process, a pad switch on event process and other manipulator processes are performed, and this is repeated. In the pad switch on event processing, the pad switch P
Processing for detecting the on-events 1 to P8 and processing according to this detection are performed. An example of this pad switch-on event process is shown in FIG. In other operator processing,
Processing for detecting on / off events of various switches and operators provided in the block 14 of the other operator group and processing according to the detected event are performed. In this process, when the above-mentioned timer interrupt clock frequency setting change operation is detected, a process of changing the generated clock frequency of the timer clock generator 15 is performed. FIG. 4 shows an example of the timer interrupt processing. The timer interrupt processing is executed every time an interrupt clock signal is given from the clock generator 15 during execution of the main routine.

In the pad switch on-event processing of FIG. 3, when the on-events of the same pad are continuously given within a predetermined time, the position of the sound image localization is changed to the reference position as shown in the movement pattern A of FIG. A sound image localization movement effect (pan effect) that starts from PR and is sequentially moved to the right, and is then controlled so as to repeat the sequential movement from left to right
An example is shown in which application control can be performed. In the example of FIG. 5, the sound image localization position has eight levels from 0 to 7, and the leftmost value is indicated by 0 and the rightmost value is indicated by 7. The reference position PR is a sound image localization position unique to the percussion instrument sound assigned to each pad, and is preset to an appropriate value.

In FIG. 3, first, in step 20,
Either pad switch (denoted by PAD (n).
n indicates a pad number. ) On event is determined. If there is no on event, this process ends. If there is an on event, go to the next step 21,
The data of the operation touch applied to the pad switch related to the on event is stored in the touch data register VOLREG corresponding to the pad number n related to the on event.
Store in (n). In addition, as already known,
A touch sensor such as a piezoelectric sensor is incorporated in each of the pad switches P1 to P8, and the output level peak hold value of the piezoelectric sensor at the time of an on event is stored in the touch data register VOLREG (n).

Next, at step 22, it is checked whether or not the state flag ST (n) corresponding to the pad number n is 1. This state flag ST (n) is set to 1 in step 27, which is a little later, and is reset to 0 by the processing of FIG. 4 when a predetermined time has elapsed. In short, if the same pad switch is repeatedly hit within a predetermined time, the determination result that the state flag ST (n) is set to 1 is obtained in this step 22, but it is set to 0 otherwise. The result of determination that it has been reset is obtained. When the normal pad operation or the first pad operation of repeated hits is performed, the state flag ST (n) is still 0 at the stage of step 22, the step 22 is determined to be NO, and the routine jumps to step 26.

In step 26, data indicating the preset reference pan position (reference position PR in FIG. 5) unique to the pad switch PAD (n) relating to the ON event is stored in the preset pan data register PAN.PR (n). )
Store at. Next, the data for setting the volume of the right channel is calculated, and the calculated data is used for the pan determination right volume register TG · R corresponding to the pad number n related to the on event.
(N), and data for setting the volume of the left channel is calculated and stored in the pan determination left volume register TG · L corresponding to the pad number n related to the on event.
Store in (n). The value of the pan register PAN (n) used for this operation is initially reset to 0.

The value of the pan register PAN (n) and the value of the preset pan data register PAN.PR (n) are added and divided by 7 to set the volume of the right channel, that is, {PAN (n ) + PAN · PR (n)} / 7 (Equation 1) is obtained and stored in TG · R (n). Also, the volume of the left channel is set by adding the value of the pan register PAN (n) and the value of the preset pan data register PAN.PR (n) and dividing by 7 and subtracting from 1. Data, that is, 1- {PAN (n) + PAN.PR (n)} / 7 (Equation 2) is obtained and stored in TG.L (n).

Registers TG.R (n) and TG.L
The sound volume setting data according to the above equations 1 and 2 stored in (n) includes eight stages of sound image localization positions 0 to 8 as shown in FIG.
7 shows the relative ratio of the left and right volume. For example,
In the case of the sound image localization position 0, the right sound volume ratio is 0/7 = 0 and the left sound volume ratio is 7/7 = 1, and the sound image is localized at the leftmost position 0. When the value of the pan register PAN (n) is 0, the volume setting data is determined only by the reference pan position data PAN.PR (n) unique to the percussion instrument sound assigned to the pad. When the pan effect, that is, the movement of the sound image localization position is given, the value of the pan register PAN (n) is 0, 1, 2, ...
And the volume setting data of the left and right channels calculated in step 26 according to the above equations 1 and 2 are changed in the opposite directions.

In step 27, the state flag ST (n) corresponding to the pad number n is set to 1 and
The timer counter T (n) corresponding to the pad number n is set to 0.
Reset to. The timer counter T (n) counts the operation interval of the pad switch corresponding to the pad number n, that is, the time interval between ON events, and is reset every ON event. In the next step 28, the pad number n relating to the current on event is set to the pad tone register TG / TONE in the percussion tone generator circuit 16.
(N), touch data register VOLREG
The touch data of (n) is stored in the touch data register TG / VR corresponding to the pad number n in the percussion tone generator circuit 16.
Transfer to (n). As a result, the percussion instrument sound source circuit 16 starts the generation of the percussion instrument sound signal assigned to the pad switch related to the on event of this time in accordance with the pad number n given to the pad tone register TG / TONE (n). , And the volume of the touch data register T
The touch-controlled percussion instrument sound signal is separated into the left and right channels, and the right-channel percussion instrument sound signal is stored in the register TG-R (n) while being controlled in accordance with the touch data stored in G.VR (n). The volume is controlled according to the volume setting data set, and the volume of the percussion instrument sound signal of the left channel is controlled according to the volume setting data stored in the register TG.L (n).

As described above, in the first on-event of the pad repeated hitting, steps 20, 21, 22, 26, 27,
The processing is performed in the flow of 28, and the processing of FIG. 3 ends. Next, when an interrupt clock signal is given from the clock generator 15, the timer interrupt process of FIG. 4 is executed. In FIG. 4, first, the pad number n is initially set to 0 (step 30), and then the routines of steps 31 to 36 are repeated eight times, that is, for the number of pads. In step 31, it is checked whether n is 8. If NO, go to step 32 and state flag ST (n) of pad number n.
Check if is 1. If the pad switch with the number n has been turned on immediately before, in step 27 of FIG.
YES because T (n) is set to 1,
Go to next step 33. If the pad switch of the number n is not turned on, ST (n) = 0, and the process jumps to step 36 to increment the pad number n by 1.

In step 33, it is checked whether or not the count value of the timer counter T (n) of the pad number n is equal to or larger than the predetermined reference value TC. TC is a value indicating a reference time for determining pad repeated hits, and if the same pad switch is continuously turned on within this reference time, it is determined that pad repeated hits to which a pan effect should be applied have been performed. As an example,
This reference value TC is set to a value corresponding to an appropriate time within a range of about 50 ms to 300 ms. If the value of T (n) has not reached the reference value TC, step 33 is NO,
Go to step 35. In step 35, the count value of the timer counter T (n) of the pad number n is incremented by 1. On the other hand, if the value of T (n) has reached the reference value TC,
If step 33 is YES, the process goes to step 34. In step 34, the state flag ST of the pad number n is
(N) is reset to 0 and the value of the pan register PAN (n) of the pad number n is reset to 0.

After that, the process goes to step 36 to increment the pad number n by 1. After step 36, the process returns to step 31, and the processes of steps 31 to 36 are repeated for the next pad number n. When steps 31 to 36 are performed for all pad numbers n, n = 8, and step 3
When 1 is YES, this timer interrupt process is terminated. Each time the timer interrupt process of FIG. 4 is performed,
The value of the timer counter T (n) corresponding to each pad is incremented by one. When the pad switch with the same pad number n is operated twice in succession, the operation time interval is the reference value TC.
If it is longer than the reference time corresponding to, T (n) ≧ TC is satisfied before the second on-event occurs, and ST (n) and PAN (n) are reset to 0 in step 34 of FIG. It Therefore, when the second on-event occurs,
Step 22 in FIG. 3 is NO and the process jumps to step 26. In that case, the pan register PAN (n) is 0, and the pan control is not performed.

When the pad switch of the same pad number n is operated twice in succession, the operation time interval is the reference value TC.
If it is shorter than the reference time corresponding to, the state flag ST (n) remains 1 because T (n) ≧ TC is not satisfied before the second on-event occurs. Therefore, when the on-event of the second hit occurs, step 22 in FIG. 3 is YES, and the procedure goes to step 23. In step 23, the value of the pan register PAN (n) of the pad number n related to the ON event is incremented by 1. Next, at step 24, it is checked whether the volume setting data of the right channel in the register TG.R (n) is 1 or 7/7. here,
It is investigated whether the sound image localization moved by the pan control reaches the right end. If no, go to step 26
By performing the calculation according to the above equations 1 and 2, each register TG
The left and right volume setting data is stored in R (n) and TG · L (n). In this case, in step 23, the pan register PA
Since the value of N (n) is incremented by 1, the volume setting data of the right channel to be stored in the register TG · R (n) obtained according to the equation 1 is increased by 1/7 from the previous time,
The volume setting data of the left channel, which is stored in the register TG · L (n) obtained according to the equation 2, is 1 more than the previous time.
Decrease by / 7. As a result, the sound image localization is 1 to the right.
Only the unit position will be moved.

Thus, when the same pad switch is repeatedly hit at a time interval shorter than the reference time, in the on-event processing after the second hit, steps 22, 23 and 2 in FIG.
Processing is performed through the flow of 4. As a result, the value of the pan register PAN (n) is sequentially increased to 0, 1, 2, ... And the volume setting data of the left and right channels according to the above equations 1 and 2 calculated in step 26 are sequentially 1/7. It gradually increases or decreases (right increases and left decreases). This allows
The sound image localization sequentially moves to the right by one unit position, and the pan effect is realized. Therefore, when a pad switch is used to perform a performance operation that mimics a special performance method in which the same sound is continuously generated, such as a drum rolling performance method, that is, the same pad switch is repeatedly struck at a time interval shorter than the reference time. At this time, control for imparting a pan effect is performed.

When the sound image localization moved by the pan control reaches the right end, the volume setting data of the right channel stored in the register TG.R (n) becomes 1 = 7/7.
Step 24 in FIG. 3 is YES, and the process goes to step 25. In step 25, the pan reference position data PAN · P
The negative value of R (n) -PAN · PR (n) is set in the pan register PAN (n). Therefore, the calculation of the equations 1 and 2 performed in step 26 performed immediately after that is: TG · R (n) ← {-PAN · PR (n) + PAN · PR (n)} / 7 = 0/7 TG · L (N) ← 1-{-PAN · PR (n) + PAN · PR (n)} / 7 = 1-0 / 7 = 7/7, which indicates the sound image localization at the left end. That is, when the sound image localization moved by the pan control reaches the right end, the next sound image localization becomes the left end, and the pan of the pattern in which the sound image localization moves from the left end to the right end is repeated as shown in the movement pattern A of FIG. become.

--Second Embodiment-- FIG. 6 shows a modified example of the pad switch on event processing of FIG. 3, in which the on events of the same pad are continuously given within a predetermined time. Figure 5 shows the position of sound image localization.
As shown in the movement pattern B of FIG. 1, the movement is started from the reference position PR and sequentially moved to the right, and after reaching the right end, it is sequentially moved from right to left, and after reaching the left end, from left to right. An example is shown in which the pan effect imparting control is performed such that the movement direction is alternately switched such that the movement direction is alternately switched to repeat the sequential movement. In FIG. 6, steps 20, 2
1, 22, 26, 27 are the same as those in FIG. 3, and steps 230, 240, 241, 250, 251 are changed from steps 23 to 25 in FIG. Further, with the change of the pad switch-on event process as shown in FIG. 6, step 3 in the timer interrupt process of FIG.
The contents of 4 are changed as shown in FIG.

Explaining the changes, first, in step 230 of FIG. 6, the value of the pan register PAN (n) of the pad number n related to the on event is increased by the value stored in the register C. Register C is initially "+
"1" is stored, and "-1" is stored when the process of step 250 described later is passed. The value of the register C indicates the increasing / decreasing direction of the pan register PAN (n), that is, the pan moving direction and the pan moving amount. Next step 2
At 40, it is checked whether the positive / negative sign of the value stored in the register C is "+" and the volume setting data of the right channel in the register TG.R (n) is 1 or 7/7.
Here, it is checked whether the pan moving direction is right and the sound image localization moved by pan control reaches the right end. If NO, go to step 241 and register C
It is checked whether the positive / negative sign of the value stored in is negative and the volume setting data of the right channel in the register TG.L (n) is 0, that is, 0/7. Here, it is checked whether the pan moving direction is left and whether the sound image localization moved by pan control reaches the left end. If this is also NO,
Go to step 26.

If step 240 returns YES, step 250 is reached. Here, the value of the pan reference position data PAN · PR (n) is subtracted from the numerical value “7”, which is “7-P.
"AN.PR (n)" is set in the pan register PAN (n), and "-1" is set in the register C. Therefore, the equations 1 and 2 performed in step 26 immediately after that
Is calculated as follows: TG · R (n) ← {7-PAN ・ PR (n) + PAN ・ PR (n)} / 7 = 7/7 TG ・ L (n) ← 1- {7-PAN ・ PR (n ) + PAN · PR (n)} / 7 = 1-7 / 7 = 0/7, which indicates the sound image localization at the right end. That is, when the sound image localization moved to the right by the pan control reaches the right end, the next sound image localization also indicates the right end, and instructs to move leftward from this right end to the left end.

When the sound image localization moved to the left reaches the left end, YES is obtained in step 241 and step 251 is proceeded to. Here, pan reference position data PAN / PR (n)
Negative value of PAN-PR (n) in the pan register PAN
(N) and "+1" in the register C. Therefore, the calculation of the equations 1 and 2 performed in step 26 performed immediately after that is: TG · R (n) ← {-PAN · PR (n) + PAN · PR (n)} / 7 = 0/7 TG · L (N) ← 1-{-PAN · PR (n) + PAN · PR (n)} / 7 = 1-0 / 7 = 7/7, which indicates the sound image localization at the left end. That is, when the sound image localization moved leftward by the pan control reaches the left end, the next sound image localization also indicates the left end, and the rightward movement is instructed from this left end to the right end. Thus
As shown in the movement pattern B in FIG. 5, it is possible to provide a pan effect in which the movement direction is alternately switched to the left and right and the movement is controlled to be repeated sequentially.

In the second embodiment, as shown in FIG.
Step 34 in the timer interrupt process shown in FIG. 7 is changed as shown in FIG. That is, the timer counter T
When the value of (n) reaches the reference value TC, the values of the state flag ST (n) and the pan register PAN (n) are reset to 0, and the value of the register C is set to "+1". As a result, the first pan movement direction is set to the right.

--Third Embodiment-- FIG. 8 is a hardware block diagram of an electronic musical instrument according to another embodiment of the present invention. In this embodiment, a keyboard 40 having a plurality of keys for instructing the generation of scale tones is provided as a performance operator, and control for imparting a sound image localization movement effect (pan effect) as a predetermined musical tone effect is performed. I am supposed to do it. Similar to the above embodiment, the CPU 41, RO
Microcomputer 4 including M42, RAM43, etc.
4, the microcomputer 44 performs the process of assigning the sound generation, the process of providing the sound image localization movement effect, and other various processes. Also, as in the above-described embodiment, the timer clock generator 45 generates a clock signal for timer interrupt. The panel operator group 46 comprehensively shows an operator group for selecting and setting tone color, volume, various effects, and the like. Pickup sensor 4
7. The pitch detection and MIDI output generation circuit 48 will be described later.

The musical tone signal generating circuit 49 for the keyboard is used for the keyboard 40.
The musical tone signal of the scale tone corresponding to the key pressed by is generated. As is known, it is possible to generate musical tone signals corresponding to different musical scale tones in a plurality of musical tone generating channels. Similar to the above embodiment, in order to control the sound image localization, the tone signals corresponding to the same pressed key are volume-controlled for the sound image localization control and are generated in the left and right channels.
Separate left and right speakers 51 via the amplifiers 50R and 50L
It is pronounced from R and 51L. FIG. 9 shows an example of the musical tone signal generation circuit 49 for the keyboard, and particularly shows a portion for generating an envelope waveform signal for musical tone control. The tone generator block 52 receives pitch data, touch data, and pan control data from the bus line 53 of the computer together with information indicating a tone generation channel, and generates a tone signal based on these.

As is known, the envelope waveform signal is generated by dividing the envelope waveform from the rising to the ending of the sound into a plurality of segments and performing an operation based on the data indicating the target value and change rate for each segment. It will be realized. The target value register 54 receives, from the bus line 53 of the computer, the data indicating the target value of the segment of the envelope waveform for each tone generation channel which is currently being calculated and stores it. Rate register 5
The reference numeral 5 receives rate data indicating the change rate of the segment of the envelope waveform currently being calculated for each tone generation channel from the bus line 53 of the computer for each tone generation channel and stores it. The level register and arithmetic circuit unit 56 is an arithmetic circuit for performing an operation for generating an envelope waveform signal based on the above rate data for each tone generation channel, and a current level of the envelope waveform signal for each tone generation channel generated by this operation. And a level register for storing a value. The stored current level value of the envelope waveform signal for each tone generation channel is supplied to the sound source block 52 and the comparator 57. The comparator 57 compares the current level value of the given envelope waveform signal of each tone generation channel with the target value data given from the target value register 54, and when a match is detected, it switches to the next segment. An instruction signal is given to the microcomputer 44 via the bus line 53.

FIG. 10 schematically shows an example of a main routine executed by the microcomputer 44. Explaining the processing contents of each step, first, in step 61, when the power is turned on, the data of the microcomputer 44 and various data of the working RAM 43 are set to predetermined values, and predetermined initialization processing is executed. In step 62, it is determined whether or not there is a key-on event based on the key scanning output of the keyboard 40. If YES, the process proceeds to step 63 of the next key-on event processing,
If NO, jump to step 64.

In step 63, key-on event processing is executed each time a key-on event occurs. An example of this process is shown in FIG. In step 64, it is determined whether or not there is a key-off event based on the key scanning output of the keyboard 40. If YES, the process proceeds to step 65 of the next key-off event process, and if NO, step 66.
Jump to. In step 65, keyoff event processing is executed each time a keyoff event occurs. An example of this is shown in FIG. In step 66, it is determined whether or not a tone color selection / setting switch is operated in the panel operator group 46 to cause a tone color change event,
If an event occurs, step 6 of the next tone color setting process.
7. If not, jump to step 68. In step 67, a tone color setting process corresponding to the tone color change event is performed. In step 68, panel operator group 4
The presence or absence of the event of the other operators in 6 is detected,
If there is an event, a process corresponding to the event is performed in step 69. FIG. 13 shows an example of the timer interrupt processing. The timer interrupt processing is executed every time an interrupt clock signal is given from the clock generator 45 during execution of the main routine.

In the key-on event processing of FIG. 11, when the key-on events of the same key are continuously given within a predetermined time, the sound image localization position is started from the reference position KR and moved to the right as shown in FIG. In this embodiment, the sound image localization movement effect (pan effect) imparting control is performed such that the sound image localization movement effect (pan effect) is controlled so as to repeat the one-way sequential movement from left to right. In the example of FIG. 14, the sound image localization position has five levels from 0 to 4, and the leftmost value is indicated by 0 and the rightmost value is indicated by 4. In this embodiment, the reference position KR corresponds to the pitch. That is, for the scale notes belonging to the predetermined high range, as shown in the movement pattern H, the localization position of KR = 2, that is, the center localization is set as the pan start position, while the predetermined low range is set. As for the scale note to which it belongs, as shown in the movement pattern L, the localization position of KR = 0, that is, the leftmost localization is set as the pan start position.

The movement pattern H is convenient because, for example, when the same key is hit three times in a tremolo playing manner, panning as shown in the pattern H1 is performed. That is, if the key in the high range is hit three times in succession, the localization positions 2, 3, 4
The localization moves in the order of. When three consecutive hits of the same key are sequentially performed in the tremolo playing method by changing the key, as shown in the pattern H1, panning from the central localization position to the right end is repeated for each scale note of the three consecutive hits, It is possible to add a pan effect that matches the feeling of playing a tremolo. Also,
According to the movement pattern L, the sound image of the low range sound moves from the left end to the right end when the low range keys are repeatedly hit, and a pseudo effect such as moving and sounding a plurality of timpani can be enjoyed.

Further, as a mode often used in a tremolo playing method in a natural musical instrument, there is a playing method in which three consecutive hits of the same key are repeated a plurality of times for the same key on the high tone side.
It is normal that a keystroke of another key on the lower tone side of the key is inserted between each three consecutive taps, and then, the time interval between the third tap of the three consecutive hits and the first keystroke of the next three consecutive hits for the same key. Is longer than the predetermined time interval TC. Therefore, even when three consecutive hits of the same key are repeated a plurality of times as in a normal tremolo playing method, panning from the center to the right end is repeated in the order of localization positions 2, 3 and 4 as shown in pattern H1 of FIG. Will be done. This also applies when the present invention is applied by picking up an external performance sound of an acoustic guitar or the like by the pickup sensor 47 of FIG. 8 as described later, and the key may be read as a string in the above.

In FIG. 11, first, at step 70, the variable i is incremented from 0 by the number of keys for which a key-on event has been detected, and the key code buffers KCBUF (i) corresponding to the respective values of i are respectively incremented. Write the key code of the pressed key related to the key-on event, and
Touch data buffer TDBUF corresponding to each i value
In (i), the touch data of the pressed key relating to each key-on event is written. In the next step 71, the variable i is reset to the initial value 0. In step 72, the key code buffer KCB corresponding to the value of the currently specified variable i
It is checked whether the same key code as the key code of UF (i) is already assigned to any tone generation channel. In step 73, YES or N depending on the result of the above search.
Branch to O. If the key code of the buffer KCBUF (i) is already assigned to any tone generation channel n, step 73 is YES, otherwise step 73 is N.
It is O. Normally, the key-on event occurs when a new key is pressed, so that the same key code as the key code of KCBUF (i) has not been already assigned to any sounding channel, so step 73 is NO. Is. Further, even when the key code of KCBUF (i) corresponds to the key code of the first keystroke when the same key is repeatedly tapped within a predetermined time, the same key code as the key code of KCBUF (i) has already been determined. Since it has not been assigned to any sound generation channel, step 73 is NO. When the key code of KCBUF (i) corresponds to the key code after the second keystroke when the same key is repeatedly tapped within a predetermined time, the key code of the first keystroke has already been assigned to any sounding channel. Since it has been assigned, step 73 branches to YES.

The key code of the key code buffer KCBUF (i) designated by the variable i is the first keystroke of the same key.
Continuing the description assuming that the key code corresponds to the keystroke of the keystroke, the process proceeds from NO in step 73 to step 74 to check whether there is an available free channel. In step 75, YES or N depending on the result of the above search.
Branch to O. If there are no free channels, step 7
5 is NO, and the process goes to step 76 to clear the memory of all the key code buffers KCBUF (i) and the touch data buffer TDBUF (i) and end this key-on event process. That is, in this case, this key-on event is ignored. On the other hand, if there is a vacant channel, step 75 is YES, one of the vacant channels is designated as the newly assigned channel n, and the process proceeds to step 77.

In step 77, the key code buffer K
Data indicating the pan reference position (KR in FIG. 14) corresponding to the range of the key code of CBUF (i) is read out from the table and stored in the key scale pan data register PAN · KR (n) corresponding to the newly assigned channel n. To store. In the next step 78, the key code buffer KCBUF
The key code of (i) is stored in the key code register KC (n) corresponding to the newly assigned channel n, and the signal "1" indicating key-on is stored in the key-on register KON (n) corresponding to the channel n. In the next step 79, data for setting the volume of the right channel is calculated and stored in the pan determination right volume register TG.R (n) corresponding to the newly assigned channel n, and the volume of the left channel is set. The data to be set is calculated, and the pan determination left volume register TG corresponding to the newly assigned channel n is calculated.
・ Store in L (n). The value of the pan register PAN (n) used for this operation is initially reset to 0.

The value of the pan register PAN (n) and the value of the key scale pan data register PAN · KR (n) are added and divided by 4 to set the volume of the right channel, that is, {PAN ( n) + PAN · KR (n)} / 4 (Equation 3) is obtained and stored in TG · R (n). Also, the volume of the left channel is set by adding the value of the pan register PAN (n) and the value of the key scale pan data register PAN · KR (n) and dividing by 4 and subtracting from 1. Data, that is, 1- {PAN (n) + PAN · KR (n)} / 4 (Equation 4) is obtained and stored in TG · L (n).

Registers TG.R (n) and TG.L
The volume setting data according to the above equations 3 and 4 stored in (n) is the sound image localization position 0 of five stages as shown in FIG.
4 shows the relative ratio of the left and right volume. For example, when the sound image localization position is 0, the ratio of the right volume is 0/4 =
The ratio of 0 and the left volume is 4/4 = 1. Pan register P
When the value of AN (n) is 0, the volume setting data is
It is determined only by the reference pan position data PAN · KR (n) corresponding to the range of the key code. When the pan effect, that is, the movement of the sound image localization position is given, the value of the pan register PAN (n) is 0, 1, as in the above embodiment.
2, and so on, and accordingly, the volume setting data of the left and right channels according to the above equations 3 and 4 calculated in step 79 vary in opposite directions.

In step 80, the state flag ST (n) corresponding to the newly assigned channel n is set to 1, and the segment number SEG (n) of the envelope waveform corresponding to the channel n is set to the numerical value " Set to 1 ”. And this segment number SE
The envelope target value data and rate data corresponding to G (n) are sent to the tone signal generating circuit 49 together with the data indicating the assigned channel n. The sent envelope target value data and rate data are stored in the target value register 54 and the rate register 55 of FIG. 9, respectively. Further, the key code of the key code register KC (n) and the key-on signal of the key-on register KON (n) are transferred to the key-code register TG / KC (n) corresponding to the channel n in the tone signal generation circuit 49. TG ・ KON
(N), and the touch data in the touch data buffer TDBUF (i) is transferred to the tone signal generation circuit 4 respectively.
The data is transferred to the touch data register TG · TD (n) corresponding to the channel n in 9.

As a result, in the tone signal generating circuit 49,
In tone generation channel n, key code register T
The generation of a musical tone signal having a pitch corresponding to the key code stored in G · KC (n) is started, the generation of an envelope waveform signal is started, and the volume envelope of the generated musical tone signal is controlled by the envelope waveform signal. At the same time, the volume of the generated tone signal is controlled according to the touch data stored in the touch data register TG / TD (n), and the generated tone signal is separated into left and right channels. The volume is controlled according to the volume setting data stored in the register TG / R (n), and the tone signal of the left channel is registered in the register TG / L (n).
The volume is controlled according to the volume setting data stored in.
Further, in this step 80, the key code buffer KC
BUF (i) and touch data buffer TDBUF (i)
Clear the data of.

In step 81, it is checked whether the content of the key code buffer KCBUF (i + 1) corresponding to i + 1 is 0. If NO, there is an unprocessed key-on event key code, so the value of i is incremented by 1 in step 82, the process returns to step 72, and the same processing as described above is repeated. If YES in step 81, there is no key code of the unprocessed key-on event, so the key-on event process is terminated and the process returns to the main routine. As described above, in the first key-on event of the same key repeated hit, step 73 branches to NO and steps 74-81.
Processing is performed according to the flow of.

Next, when the interrupt clock signal is applied from the clock generator 45, the timer interrupt processing of FIG. 13 is executed. In FIG. 13, first, the channel number n is initially set to 0 (step 90), and then the routines of steps 91 to 99 are repeated eight times, that is, for the number of sounding channels. In step 91, it is checked whether n is 8. If NO, go to step 92 and segment number SE of the envelope waveform corresponding to channel n.
It is checked whether G (n) is not "1" and the level TG · EVL (n) of the envelope waveform signal of the channel n is smaller than the predetermined minimum value LC. SEG (n) =
When it is 1 (at the time of attack) or when the level of the envelope waveform signal is larger than the predetermined minimum value LC, step 92 is NO and the routine proceeds to step 93. Step 9
In 3, the monitor monitors whether the level of the envelope waveform signal of the channel n reaches the target value based on the output of the comparator 57 (FIG. 9), and if the level is reached, the target value data and the rate data of the next segment are monitored. It is sent to the tone signal generation circuit 49. These are stored in the target value register 54 and the rate register 55 (FIG. 9) as described above.

In step 94, it is checked whether the state flag ST (n) of channel n is 1. If the key assigned to the channel n has just been turned on immediately before, ST (n) has been set to 1 in step 80 of FIG. 11 as described above, so YES, and the next step 95. go to. If the key assigned to the channel n has not been turned on immediately before, ST (n) = 0, and the process jumps to step 98 to set the channel number n to 1
To increase.

In step 95, it is checked whether the count value of the timer counter T (n) of the channel n is equal to or more than the predetermined reference value TC. TC is a value that indicates a reference time for determining continuous keystrokes. If the same key is continuously tapped within this reference time, it is determined that a key-press performance operation that should give a pan effect has been performed. If the value of T (n) has not reached the reference value TC, step 95 is NO and the routine proceeds to step 97. In step 97, the count value of the timer counter T (n) of the channel n is incremented by 1. on the other hand,
If the value of T (n) has reached the reference value TC, step 9
5 is YES and goes to step 96. Step 96
Then, the state flag ST (n) of the channel n is set to 0.
And the value of the pan register PAN (n) of the channel n is reset to 0.

After that, the process goes to step 98 and the channel number n is incremented by 1. After step 98, step 91
And go to steps 91 to 91 for the next channel number n.
The processing of 98 is repeated. When the processing of steps 91 to 98 is performed for all the channel numbers n, n = 8 and step 91 becomes YES, and the timer interrupt processing ends. When the level of the envelope waveform signal of the channel n becomes smaller than the predetermined minimum value LC, step 92 becomes YES and the process goes to step 99 to end the sound generation process. In step 99, the contents of the key code register KC (n), the key-on register KON (n), the segment number SEG (n) and the timer counter T (n) of the channel n are reset to 0 and the tone signal generating circuit 49 is set. The contents of channel n of the target value register 54 and the rate register 55 (FIG. 9) therein are cleared.

Each time the timer interrupt process of FIG. 13 is performed once, the timer counter T corresponding to each channel is
The value of (n) increases by one. When the same key as the key assigned to the channel n is continuously depressed twice or more, if the operation time interval is longer than the reference time corresponding to the reference value TC, before the second key-on event occurs. Then, T (n) ≧ TC is satisfied, and ST (n) and PAN (n) are reset to 0 in step 95 of FIG. On the other hand, when the same key is pressed two or more times in succession, if the operation time interval is shorter than the reference time corresponding to the reference value TC, before the key-on event for the second keystroke occurs, T
(N) ≧ TC is not satisfied, and the state flag ST
(N) remains 1.

A process when a key-on event corresponding to the second and subsequent keystrokes occurs when the same key as the key assigned to the channel n is continuously depressed two or more times will be described. When a key-on event corresponding to the second and subsequent consecutive keystrokes occurs, the key code corresponding to the key has already been assigned to any channel n. That is, when a key-on event for the first keystroke occurs, at step 78 in FIG.
The key code is stored in the key code register KC (n). Therefore, at the time of key-on event processing corresponding to the second and subsequent keystrokes, step 72 in FIG.
Then, the key code of the second keystroke stored in the key code buffer KCBUF (i) is any sound channel n.
It is searched that the key code is already assigned to, and the flow branches to YES in step 73, and goes to step 83.

In step 83, as in step 77, data indicating the pan reference position (KR in FIG. 14) corresponding to the tone range of the key code in the key code buffer KCBUF (i) is read from the table and is assigned to channel n. Corresponding key scale pan data register PAN / KR
Store in (n). In the next step 84, it is checked whether the state flag ST (n) is 1. If the operation time interval between consecutive keystrokes is longer than the reference time, T (n) ≧ TC is satisfied before the key-on event for the second keystroke occurs, and ST (n) and PAN (n) are set at step 95 in FIG. Since it is reset to 0, in the process of FIG. 11 in response to the key-on event of the second keystroke, step 84 branches to NO and goes to steps 79 and 80, where the same process as the first keystroke is performed. In that case, since the process of changing the value of the pan register PAN (n) is not performed, the sound image localization does not move.

On the other hand, if the operation time interval between successive keystrokes is shorter than the reference time, T (n) ≧ TC is not satisfied by the time the second keystroke key-on event occurs, and the state flag ST
(N) remains 1, and step 84 branches YES to step 85. In step 85, the value of the pan register PAN (n) of channel n is incremented by 1. Next, at step 86, it is checked whether the volume setting data of the left channel in the register TG · L (n) is 0, that is, 0/4. Here, it is checked whether the sound image localization moved by the pan control reaches the right end. If NO, go to step 79, perform the calculation according to the above equations 3 and 4,
The left and right volume setting data are stored in the respective registers TG · R (n) and TG · L (n). In this case, since the value of the pan register PAN (n) is incremented by 1 in step 85,
The volume setting data of the right channel to be stored in the register TG · R (n) obtained according to the equation 3 is 1 more than the previous time.
Register TG which is increased by / 4 and is obtained according to the above equation 4.
The volume setting data of the left channel stored in L (n) is reduced by 1/4 compared to the previous time. As a result, the sound image localization moves to the right by one unit position.

Thus, when the same key is repeatedly tapped at a time interval shorter than the reference time, in the on-event processing after the second tap, steps 73, 83, 84 and 8 in FIG.
Processing is performed through the flow of 5,86. This allows
The value of the pan register PAN (n) is sequentially increased to 0, 1, 2, ... And the volume setting data of the left and right channels according to the above equations 3 and 4 calculated in step 79 are sequentially reduced to 1/4.
It gradually increases or decreases (right increases and left decreases). As a result, the sound image localization sequentially moves to the right by one unit position, and the pan effect is realized.

When the sound image localization moved by the pan control reaches the right end, the volume setting data of the right channel stored in the register TG.L (n) becomes 0 = 0/4.
Step 86 in FIG. 11 becomes YES, and the process goes to step 87. In step 87, pan reference position data PAN
The negative value of KR (n) -PAN · KR (n) is set in the pan register PAN (n). Therefore, the calculation of the equations 3 and 4 performed in step 79 performed immediately after that is: TG · R (n) ← {-PAN · PR (n) + PAN · KR (n)} / 4 = 0/4 TG · L (N) ← 1-{-PAN · PR (n) + PAN · KR (n)} / 4 = 1-0 / 4 = 4/4, which indicates the sound image localization at the left end. That is, when the sound image localization moved by the pan control reaches the right end, the next sound image localization becomes the left end, and the movement pattern H or L in FIG.
As shown in, the pan of the pattern in which the sound image localization moves from the left end to the right end is repeated.

The process when a key-off event occurs will be described with reference to FIG. 12. First, in step 100,
The key code of each key-off event is written in the key-off buffer KOFBUF (i) corresponding to each value of i while appropriately incrementing the variable i from 0 by the number of keys for which the key-off event is detected. Next step 1
At 01, the variable i is reset to the initial value 0. In step 102, it is checked which tone generation channel n the key code of the key-off buffer KOFBUF (i) corresponding to the value of the currently designated variable i is assigned.
In step 103, the segment number SEG (n) corresponding to the searched channel n is set to the final value so that the envelope waveform is attenuated to erase the sound and the key-off buffer KOFBUF (i) is cleared. In step 104, it is checked whether the content of the key-off buffer KOFBUF (i + 1) corresponding to i + 1 is 0. If NO, there is an unprocessed key code of the key-off event, so the value of i is incremented by 1 in step 105, the process returns to step 102, and the same processing as described above is repeated. If YES in step 104, there is no unprocessed key-off event, so this key-off event process is terminated, and the process returns to the main routine.

--Fourth Embodiment-- Next, an embodiment in which the pan effect is controlled in consideration of the strength of the touch applied to the performance operator will be described. As an example, an example will be described in which the embodiment shown in FIGS. 8 to 13 is partially modified and realized. In this case, the key-on event process of FIG. 11 is partially modified as shown in FIG. As for the changed part, the processing corresponding to steps 85, 86 and 79 in FIG. 11 is the same as steps 850, 851 and 8 in FIG.
60 and 790, and other points are the same as in FIG.

The movement pattern of the pan effect realized by the modification of FIG. 15 will be described. When the key-on events of the same key are continuously given within a predetermined time, the position of the sound image localization is changed to the movement pattern of FIG. As shown in X, start from the reference position KR and move to the left sequentially,
After that, the pan effect imparting control is performed so that the one-way one-way movement from right to left is repeated. In the example of FIG. 16, the sound image localization positions are 16 from 0 to 15.
It is a stage, and the leftmost value is 0 and the rightmost value is 15. Then, in this embodiment, the reference position KR is
For a scale note that corresponds to a pitch, that is, belongs to a predetermined treble range, as indicated by a movement pattern X, KR
= 15 localization position, that is, the right end is set as the pan start position. On the other hand, for scale notes belonging to a predetermined bass range, as shown in pattern Y, the localization position of KR = 0, that is, the left end is panned. It is supposed to be the start position. Therefore, in this embodiment, the pan control as shown in the movement pattern X is performed only when the generated sound belongs to the predetermined treble range, and when it belongs to the low range, the sound image localization is fixed at the left end and does not move. ing.

Explaining the changed part in FIG. 15, first, in step 850, the pan change width data D is calculated according to the touch data. In this calculation, the value of the touch data in the touch data buffer TDBUF (i) is multiplied by 4 and the product is multiplied by the predetermined touch data maximum value TDM.
It is done by dividing by AX and adding 0.5 to the quotient. Then, the integer value of the calculation result is stored in the register as the pan change width data D. The reason for adding the number 0.5 is because of rounding. The reason for multiplying by 4 is that the value of the touch data in the buffer TDBUF (i) is the maximum value T.
This is because the pan change width data D becomes 4 in the case of DMAX. That is, the pan change width data D takes an integer value in the range of 0 to 4 according to the touch data. next,
In step 851, the pan register PA of channel n is
The value of N (n) is decreased by the value of the pan change width data D. In the next step 860, the register TG · L (n)
It is checked whether the volume setting data of the left channel in is larger than 1, that is, whether the sound image localization reaches the left end. If NO, go to step 790, but if YES, go to step 87.

In step 790, the data for setting the volume of the left and right channels is calculated according to the following equations 5 and 6 and stored in the registers TG.R (n) and TG.L (n). TG ・ R (n) ← {PAN (n) + PAN ・ KR (n)} / 15 (Equation 5) TG ・ L (n) ← 1- {PAN (n) + PAN ・ KR (n)} / 15 ... (Equation 4) As a result, for sounds in the low frequency range, PAN / KR
When (n) = 0, TG · L (n) ≧ 1 is satisfied from the beginning, and YES from step 860 to step 87,
Since the value of the pan register PAN (n) is always set to 0, TG · R (n) = 0/15 = 0, TG · L
(N) = 15/15 = 1, and the sound image localization is fixed at the left end.

On the other hand, with regard to sounds in the high range, PA is initially used.
Since N · KR (n) = 15, TG · R (n) = 1
5/15 = 1, TG · L (n) = 0/15 = 0,
The sound image is localized at the right end. Then, when the same key is continuously tapped within a predetermined time, the pan change width data D is determined according to the touch data at that time (step 850), and the pan register PAN by a value corresponding to the change width data D is determined.
The value of (n) decreases, the volume setting data obtained by the above equations 5 and 6 changes accordingly, and the sound image localization moves. For example, at the second keystroke, PAN (n) = 0-D, and TG · R
(N) = (15−D) / 15, TG · L (n) = D / 1
5, the sound image localization moves from the right end to the left by the change width D. Further, when continuous keystrokes continue, the sound image localization sequentially moves to the left by the amount of the pan change width data D corresponding to the touch data at that time. When the sound image localization reaches the left end and step 860 becomes YES, the value of PAN · KR (n), that is, 15, is set in the pan register PAN (n) at step 87, so the sound image localization returns to the right end, and from the right end. Repeated sound image localization movement toward the left edge. In this way, the pan control as shown in the movement pattern X of FIG. 16 is realized.

In the case of the above-mentioned embodiment, since the movement width of the sound image localization changes depending on the strength of the touch, the expressive power can be further increased. In that case, the relationship between the touch strength and the movement width of the sound image localization may be set to be non-linear. For example, when playing with a pianissimo touch, the movement width of the sound image localization is set to 0 so that movement of the sound image localization does not occur. On the other hand, when playing with a stronger touch than the pianissimo, the linearity depends on the strength of the touch. Alternatively, the sound image localization movement may be performed with a movement width having a non-linear relationship. By doing so, the performance expressing ability can be further enhanced. Therefore, the pan change width data D may be set not only by calculation as in the above example but also by a table or the like.

In the embodiment shown in FIGS. 8 to 16,
The keyboard 40 is used to specify a scale note, but not limited to this, like the keyboard percussion function, a predetermined percussion instrument sound is assigned to each key of the keyboard 40, and when a key is pressed, it is set there. Even when the assigned musical tone signal of the percussion instrument sound is generated by the keyboard musical tone signal generation circuit 49, this embodiment can be applied to the whole.

Further, in the embodiment shown in FIGS. 8 to 16, the keyboard 40 is used as the sounding instruction information generating means, but the present invention is not limited to this, and the pickup sensor 47 of FIG. 8 is used.
The information generated from the circuit 48 based on the acoustic signal picked up in (1) may be used as the sounding instruction information equivalent to the key code, and even in that case, the above embodiment can be applied to the whole. That is, a pickup sensor 47 picks up an arbitrary acoustic signal such as a natural musical instrument sound of an acoustic guitar or a human voice sound from the outside, and the pitch detection and MIDI output generation circuit 48 detects the pitch and also detects a touch or the like appropriately. Frequency data indicating pitch, scale data and touch data, key-on /
OFF data and the like are output in a MIDI standard data form. The microcomputer 44 treats the external sound input data of the MIDI standard given from the circuit 48 as the data equivalent to the sounding instruction information such as the key-on event, and performs the tone effect imparting control according to the present invention, which is equivalent to the above embodiment. By doing so, for example, when the tremolo is played with the acoustic guitar, the movement of the sound image localization can be obtained. In that case, the tone effect imparting control according to the present invention is performed according to the output of the keyboard 40, or the circuit 48 is used.
It may be possible to appropriately select whether to perform according to the external sound input data from. For that purpose, such a selection switch may be provided in the panel operator group 46, or a connection detecting means may be provided in the connector 58 for connecting the output line of the circuit 48 to the bus of the computer 44.
When the output line of the circuit 48 is connected to the connector 58, the tone effect imparting control according to the present invention may be preferentially selected so as to be performed according to the external sound input data from the circuit 48.

In the third and fourth embodiments, the key scale characteristic according to the pitch (tone range) of the pan reference position (KR) is 0 or 4 depending on the two tone ranges of high and low as in the above-mentioned example. Alternatively, the characteristics are not limited to those that take 0 or 15, and any characteristics may be used in terms of the range setting method and values. Further, the key scale characteristic of the pan reference position (KR) may be changed by an appropriate operator. First above
In the fourth to fourth embodiments, the movement characteristic or movement pattern of the pan is not limited to those shown in these embodiments, but may be set in any manner. Also, the movement pattern may be changed according to an appropriate factor such as the size of the touch. In the first to fourth embodiments, the left and right channels are used for the pan control, but the number of pan control channels (speakers) is not limited to this.
May be provided. In addition, when many pan control channels (speakers) are provided, the sound image localization can be performed only by sequentially turning on / off the volume of each pan control channel (speaker) without performing multi-level control of the volume level. It's okay because you get movement.

The sounding instruction information is not limited to operation information from a performance operator such as a key or pad, but performance information automatically generated by an automatic performance information generator may be used.
By doing so, it is possible to perform the automatic addition control of the musical sound effect according to the present invention on the automatic performance sound. Further, when it is determined that the same sounding instruction information is continuously given within the predetermined time, in the above-described embodiment, the predetermined tone effect imparting control is performed on the second and subsequent sounds. However, the present invention is not limited to this, and predetermined musical sound effect imparting control may be performed in response to at least one of the sounds, and this also provides different musical effect.

The musical sound effect imparted according to the present invention is not limited to the above-described sound image localization movement (pan) effect, and may be any one. For example, a musical tone effect of variably controlling envelope setting parameters such as the time length or change rate of sustain, decay or release of the envelope waveform may be added. Even in that case, the present invention can be carried out according to the first to fourth embodiments. For example, like the registers TG.R (n) and TG.L (n) that store the volume setting data for pan control, one register whose stored value is controlled in accordance with the continuous operation mode of a key or the like is provided. An envelope setting parameter such as a sustain rate may be variably controlled according to the value of this register. As a result, for example, for a sound that is played quickly with a decoration sound, the interval between the decoration sound and the following sound becomes short, so the sustain of the sound is made longer (or shorter) than other sounds. ) Etc. will be automatically added to the musical tone effect control, and the performance expressing ability can be enhanced. Further, the present invention is not limited to the control of the envelope setting parameter, and a musical sound effect of variably controlling the depth and time of the reverb effect, the modulation effect, etc. may be added according to the present invention.

[0068]

As described above, according to the present invention, when the same sounding instruction information is continuously given within a predetermined time,
In response to at least one of the pronunciation instruction information, predetermined tone effect imparting control is performed on the tone signal generated corresponding to the pronunciation instruction information. It becomes possible to automatically control the automatic addition or non-addition of the musical sound effect by performing the automatic discrimination, and it is possible to enhance the performance expression ability, which is an excellent effect.

[Brief description of drawings]

FIG. 1 is a hardware configuration diagram showing an embodiment of an electronic musical instrument according to the present invention.

FIG. 2 is a flowchart schematically showing an example of a main routine executed by the microcomputer shown in FIG.

FIG. 3 is a flowchart showing an example of pad switch on event processing in FIG.

FIG. 4 is a flowchart showing an example of timer interrupt processing.

FIG. 5 is a diagram showing an example of a sound image localization movement pattern realized by the embodiment.

FIG. 6 is a flowchart showing a modified example of the pad switch on event process of FIG.

FIG. 7 is a diagram showing extracted changed portions in the timer interrupt processing of FIG.

FIG. 8 is a hardware configuration diagram showing another embodiment of the electronic musical instrument according to the present invention.

9 is a block diagram showing an example of a musical tone signal generation circuit for a keyboard in FIG.

10 is a flowchart schematically showing an example of a main routine executed by the microcomputer shown in FIG.

11 is a flowchart showing an example of a key-on event process in FIG.

12 is a flowchart showing an example of a key-off event process in FIG.

FIG. 13 is a flowchart showing an example of timer interrupt processing.

FIG. 14 is a diagram showing an example of a sound image localization movement pattern realized by the other embodiment.

FIG. 15 is a flowchart showing a modified example of the key-on event process of FIG.

16 is a diagram showing an example of a sound image localization movement pattern realized according to the modification of FIG.

[Explanation of symbols]

P1 to P8 ... Pad switches. 10,44 ... Microcomputer. 16 ... Percussion instrument sound source circuit. 17R, 17L,
50R, 50L ... Amplifier, 18R, 18L, 51R, 5
1L ... speaker. 40 ... keyboard. 49 ... Musical tone signal generation circuit for keyboard.

Claims (1)

[Claims] 1. A sounding instruction information generating means for generating sounding instruction information for instructing the generation of a musical sound, a sound signal generating means for generating a sound signal corresponding to the sounding instruction information, and the same sounding instruction information. Determining means for determining whether the sound is given at intervals within a predetermined time, and, in response to at least one of the same sounding instruction information given at intervals for the predetermined time, according to the judgment by the judging means, An electronic musical instrument comprising: a tone control means for performing a predetermined tone effect imparting control on the tone signal generated corresponding to the instruction information.