JP2858314B2 - Tone characteristic control device - Google Patents

Description

Description: TECHNICAL FIELD [0001] The present invention relates to a tone characteristic control device, and more particularly to a control technique for reflecting an after touch input in a tone generated by a sound source.

[Prior art and its problems] Historically, electronic musical instruments have mainly been developed of keyboard type. Inevitably, the control device (typically, a microcomputer) of a keyboard-type electronic musical instrument considers that the controls of the musical instrument are of the keyboard type (keyboard, bender, modulation wheel, pedals, etc.). Proper sound source control has always been a challenge, and efforts have been made. In addition, communication technology between electronic musical instruments,
For example, MIDI (Musical Instrument Digital Interface)
Also, attention has been paid to keyboard-type electronic musical instruments.

However, in recent years, electronic musical instruments other than the keyboard type have become widespread. For example, electronic string instruments of the guitar type, electronic wind instruments of the lead type, and the like have been put into practical use, and their popularity has been increasing. Further, from the viewpoint of the flexibility of the music system, various electronic musical instruments (including a sequencer) are interconnected and used as an external performance controller for a sound module or the like, thereby providing a variety of various playing modes. It is expected to increase the possibility of musical expression.

Unfortunately, the capabilities of current electronic musical instrument controllers are limited to specific performance controllers (typically keyboards), and it is not possible to perform sufficient tone control on any performance controller. For example, taking as an example the aftertouch data to be processed according to the present invention, the information indicated by this data is the key pressure after a key is depressed when the performance controller is a keyboard. When it is a breath controller, it becomes air flow or breath pressure. When using the former, that is, a keyboard instrument, the performance controller detects relatively gradual fluctuations in key pressure as aftertouch data depending on the limited degree of freedom of keyboard operation, etc., so the aftertouch effect is added to the keyboard. The control device can do this without any problems. On the other hand, when the latter, that is, a wind instrument, is used, the breath controller generates aftertouch data that changes with a high degree of freedom due to the sharp breath control from the player. Here, due to digital problems such as the accuracy of the breath detection element, the resolution of the A / D converter, and the accuracy of the aftertouch data received and processed by the controller, the aftertouch data as intended by the player is It becomes difficult to receive and process by the control device and control the musical sound as expected. In particular, when the player is trying to give a fixed breath control, that is, constant breath pressure, frequent fluctuations occur in the aftertouch data, and this is directly included in the control data for the aftertouch effect. There is a problem (a limit cycle-like problem) in that the characteristics of the musical tone are reflected frequently and fluctuate frequently, and an unnatural sound is produced.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an after-touch characteristic control apparatus in which various types of performance controllers are connected and after-touch data expressing a completely different form of performance operation is input depending on a use situation. It is an object of the present invention to provide a musical sound characteristic control device capable of expressing an after touch effect intended by a player into musical sounds irrespective of performance operation information implied by data. Further, an object of the present invention is to provide a limit cycle of musical tones caused by cyclic small fluctuations (wandering) of aftertouch data provided from these performance controllers even when a breath controller or a lip controller of a wind instrument is used. It is an object of the present invention to provide a tone characteristic control device capable of suppressing a characteristic variation phenomenon and realizing an after touch effect originally intended by a player's breath pressure control.

[Structure and operation of the invention] In order to achieve the above object, the present invention switches at least a first control mode and a second control mode so as to be selectable, and the selected mode is the first control. When the mode is a mode and the range of change between the current after-touch data received by the after-touch data receiving means and the previous after-touch data is small, the change in the characteristic of the musical tone is performed based on both the current and previous after-touch data. The control data is generated and generated such that the ratio is controlled.

According to this configuration, in the first control mode, when the range of the change of the aftertouch data is large, it is determined that the player's intention is reflected in the change, and the control data corresponding to the current aftertouch data is generated as it is. However, when the range of change of the aftertouch data is small, it is determined that the change is unintended by the player, and based on both the current and previous aftertouch data, the change rate of the characteristic of the musical tone is suppressed. Control data is generated and generated. As a result, the characteristic change of the unpleasant and unpleasant musical tone is eliminated, and the after touch effect always expected by the player can be obtained. In addition, when the range of change of the aftertouch data is small, the control data corresponding to the previous aftertouch data is not held as it is, and the control data based on both the current and previous aftertouch data is newly added. Is generated, when the after-touch data gradually changes with a small change width, the characteristic of the musical tone does not suddenly change at a certain point in time. When the control mode is other than the first control mode, the arithmetic processing in the control data generating means is simplified (completed in a short time), so that tone control for other performance control data (note on / off, etc.) is performed in the control device. This can be performed sufficiently by other means, and the sound source of the control device can be effectively used under the restriction of the real-time processing. In the first control mode, the amount of processing from aftertouch to the acquisition of control data may be slightly larger, but since the wind instrument is generally monophonic, it is caused by the fact that it is polyphonic like a keyboard instrument. No processing is required.

In one configuration example, the control data generating means includes the first control data generating means.
In the control mode, the representative aftertouch data is extracted from the aftertouch data group received by the receiving means at every predetermined cycle, and control data corresponding to the extracted aftertouch data is generated. Yes, by calculating the difference between the control data generated in the current cycle and the control data generated in the previous cycle, to detect the width of change between the current after touch data and the previous after touch data, If the calculated difference is larger than a predetermined value, control data in the current cycle is generated.If the calculated difference is smaller than a predetermined value, control data in the current cycle is not generated. New control data is generated from the control data and the control data in the previous cycle. And, generating this newly generated control data as control data in the current cycle.

According to this configuration, the control data generating unit does not need to perform the process of generating the control data each time one of the after-touch data is received by the receiving unit, and the occurrence of the delay in the real-time processing is further prevented. Is done.

In a further configuration example, when the difference is smaller than a predetermined value, the control data generating means may control the control data in the current cycle and the control data in a previous cycle in a manner corresponding to the degree of the difference. And newly generate control data.

According to this configuration, since the arithmetic processing is performed in a mode corresponding to the small difference, for example, when the difference is extremely small, the control data of the current cycle is generated so as to be sufficiently close to the control data of the previous cycle, As the difference increases, the control data of the current cycle can be generated so that the control data of the current cycle becomes more distant from the control data of the previous cycle, thereby suppressing a change in the tone characteristics unintended by the player and a sudden change in the tone characteristics. Is performed with higher accuracy.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

<Overall Configuration> FIG. 1 shows the overall configuration of an electronic musical instrument 1 incorporating the features of the present invention. The key 1-1 detects key depression speed, key release speed data, and key pressure data (after touch data on the keyboard) after key depression, including key codes, as information of operated keys. Is sent to a microcomputer (CPU) 1-2 as a control device. The switch 1-3 comprises a series of function switches, and the state of each switch is sent to the microcomputer 1-2 for processing. The controller 1-4 constitutes a control for performance other than the keyboard 1, and includes a bender wheel for changing the pitch of the musical tone during the performance and a modulation wheel for changing the depth of the tremolo. An operator such as a definable wheel for operating on one or a plurality of musical sound components is sent to the microcomputer 1-2. Display section 1-5
Is composed of an LED or an LCD (liquid crystal) display, and displays the current playing state, the operating state (system state) of the electronic musical instrument 1, setting data, and the like under the control of the microcomputer 1-2. MIDI 1-6 is an external interface used by the microcomputer 1-2 to communicate data with an external electronic musical instrument, sequencer, or the like. Another external interface 1-7 is an interface between the microcomputer 1-2 and the IC card. The microcomputer 1-2 takes in data or programs from the IC card via the external interface 1-7, Write data or programs to the card. Microcomputer 1-2 is ROM1
-8 and a RAM 1-9. A ROM 1-8 stores a program for operating the electronic musical instrument 1, timbre data, performance data, and the like. A RAM 1-9 stores data used during execution of the program. For example, timbre data, timbre control data,
Performance data, performance state data, and the like are temporarily stored.

The sound source 1-10 generates tone signals of a plurality of voices under the control of the microcomputer 1-2. The sound source 1-10 may be, for example, an iPD as disclosed in Japanese Patent Application No. 62-249467.
(Interactive phase distortion type) sound source can be used. The digital tone signal generated by the sound source 1-10 is sent to the D / A converter 1-11 for each system (here, two systems), and is converted into an analog tone signal of each system. D / A converter 1-11
The analog tone signal of each system from the panning effect generator 1 controlled by the microcomputer 1-2.
Entered in 12. The panning effect generator 1-12 has two pairs (two systems) of VCAs for controlling the amplitude of the analog tone signal of each system in a complementary manner, for a total of four VCAs.
Among them, two VCA outputs are mixed to form a stereo right channel and left channel signal. Thereby, the localization of the sound image is controlled for each system. Unnecessary frequency components are removed from each stereo channel signal from the panning effect generator 1-12 by the filter 1-13, and the
After being amplified at 14, sound is emitted from the left and right speakers 1-15.

<Basic Operation> Next, the basic operation of the electronic musical instrument 1 will be described with reference to FIGS.
This will be described with reference to FIG. 2F.

FIG. 2A shows a first timer interrupt routine started at regular intervals. In this routine 2-1-1,
The state of the keyboard 1-1 and the state of each switch of the switch 1-3 are taken into the microcomputer 1-2.

FIG. 2B shows a second timer interrupt routine. In step 2-2-1, the data of the controller 1-4 is fetched into the microcomputer 1-2. Is checked, and if it has changed, control data change processing 2-2-2 is executed. Next step 2-2-3
In, an operation for realizing the LFO vibrato is executed. That is, the current vibrato data is generated from the data (reference rate, reference depth, control data for modulating the vibrato parameter and MIDI data) acting on the vibrato. Next, in step 2-2-4, an operation for changing the pitch of the musical tone is performed by using the LFO vibrato, MIDI data, and control data according to the pitch change setting state of the system, and the result is output to the sound source 1-10.
To control the pitch. Next, step 2-2
In step 5, data calculation for realizing LFO tremolo (growl) is performed (including calculation processing necessary when control data or MIDI data modulates tremolo or growl). Next, step 2-
In 2-6, LFO tremolo, MIDI data (for example, after touch data), and control data perform calculations for realizing that the tone and volume of the musical tone are actually changed.
The result is sent to the sound source 1-10 to control the tone and volume of the musical tone. In the last step 2-2-7, a pan data creation process for generating a panning effect is performed.

FIG. 2C shows a third timer interrupt routine. In this routine 2-3-1, the panning effect generator 1 shown in FIG.
For -12, a control signal is sent from the microcomputer 1-2 to actually realize the effect.

FIG. 2D shows the case where the MIDI data is transmitted, and the MIDI is activated by an interrupt from the MIDI interface 1-6.
This is a reception processing routine 2-4-1. Here, only reception processing (such as data setting to a MIDI-related buffer on the RAM 1-9) is performed. FIG. 2E shows a MIDI transmission processing routine 2-5-1 activated by interruption from the MIDI interface 1-6 when MIDI data is sent to an external electronic musical instrument or the like. Transmission speed is maintained.

FIG. 2F shows a general flow (main program) of the microcomputer 1-2. First, when the power is turned on, an initialization routine 2-6-1 is performed.
Here, initial settings for the sound source 1-6, setting of initial display data on the display unit 1-5, and initial settings of control data, calculation data, and the like are performed. Step 2-6
In step 2, a change in the state of the switch is determined with reference to the result of the interrupt routine (FIG. 2A) for keyboard / switch data acquisition. If there is a change, the switch change processing routine 2-6-3 is executed. Execute. In this routine 2-6-3,
Setting of performance mode, setting of tone data, setting of MIDI control data, setting of pan control data, setting of tone control data for tone generator 1-10, setting of display data on display section 1-5, initializing control data Setting, control of panning effect generator 1-12, transfer of data or program with external interface 1-7 of IC card, MIDI
Control of the interface 1-6 is executed according to the state of the system (hereinafter, referred to as a menu).

Next, in step 2-6-4, the MIDI interface 1
-6, it is determined whether or not MIDI data has been input by referring to the inspection flag set in the MIDI reception routine 2-4-1 (FIG. 2D). Perform -5. This input processing routine 2
In -6-5, the MIDI input data is identified, the corresponding internal performance mode is changed, the tone data is changed,
Pan control data change, tone control data change, tone control (note on / off, etc.), display data control, MIDI
Control of the interface 1-6 and the like are executed according to menus and setting data.

Next, in step 2-6-6, the state change of the keyboard 1-1, that is, the presence / absence of key depression, the presence / absence of key release, and the like are determined from the processing result of the interruption routine 2-1-1 (FIG. 2A). If there is a change, in the key change processing routine 2-6-7, the key is changed by depressing and releasing the key, the sound is assigned, the sound is processed,
The mute processing, control of the MIDI interface 1-6, and the like are performed.

<Setting of Tone Control Data> FIG. 3 shows an example of setting tone control data. This setting is performed by operating the switch 1-3 or through external MIDI data. In the figure, the sense is sensitivity data having a value of 0 to 99, and the amplifier bias is a parameter for controlling the volume and tone of a musical tone (in the case of an iPD sound source, one voice, that is, a sounding channel is a programmable connection form of a plurality of modules. (Pronunciation algorithm)
For a module that is used as an output of a musical tone, the amplifier bias is a bias component for the amplitude of the musical tone of the module, that is, the volume.
For a module that outputs a tone component used as an input to another module, the amplifier bias acts as a bias component to change the tone of the final output tone of the sounding channel), the vibrato depth is the LFO vibrato depth,
That is, it means the frequency fluctuation range. Aftertouch,
The modulation wheel, the definable controller, and the foot volume are items of controllers (operators), and whether or not each controller affects tone parameters (here, amplifier bias, vibrato depth), that is, whether or not to modulate tone parameters. Is determined according to ON and OFF in each of the illustrated squares. In the illustrated example, for example, aftertouch is a controller (control data) that modulates the amplifier bias with the maximum sensitivity of 99. Here, the after touch data is data based on the key pressure at the time of operation of the keyboard 1-1 of the electronic musical instrument 1, similar data transmitted in a MIDI format from an external electronic keyboard musical instrument, and a breath for an external electronic wind instrument. Data generated based on operations and sent in MIDI format,
Alternatively, the data may be data generated based on a string operation on an external electronic stringed instrument and transmitted in a MIDI format.

An external electronic musical instrument (controller) connected via a MIDI interface 1-6 as a communication interface is optional. In some cases, aftertouch is information representing the strength of breath, in some cases information representing key pressure, and in other cases information representing other performance operation states. In the present invention, in view of these points,
The electronic musical instrument is provided with a function of switching the musical instrument playing mode, and the after-touch is optimally controlled according to the musical instrument playing mode, particularly considering the wind instrument playing mode.

Hereinafter, how these points are realized in the embodiment will be described in detail.

<Musical Instrument Performance Mode Setting> First, setting and changing of the musical instrument performance mode will be described with reference to FIGS.

FIG. 4 shows all the switches included in the switches 1-3. The setting of the musical instrument playing mode is performed under the normal menu. First, by pressing a normal (NORMAL) switch 3-1 of the switches shown in FIG.
The electronic musical instrument 1 is in a state of displaying a tone (EP in the figure indicates an electric piano) as shown in FIG. 5 on the LCD display of the display section 1-5. Next, the cursor (CURSOR) key 35-2 is pressed to move the cursor on the display to the musical instrument performance mode display position as shown in FIG. Subsequently, by operating the value (VALUE) key 3-3, the display data changes as K → G → W. Here, K indicates a keyboard performance mode, G indicates a guitar performance mode, and W indicates a wind instrument performance mode. At this time, RA
As shown in FIG. 6, the internal data stored in the performance mode discriminating register M on M1-9 has upper three bits of 100 bits.
→ 010 → 001 and so on. The above-described musical instrument performance mode setting processing is executed in the switch change processing routine 2-6-3 of the general flow (FIG. 2). Therefore, for example, when using an electronic musical instrument as an external electronic musical instrument, the user sets the wind instrument mode according to the above-described procedure, when using an electronic stringed instrument, sets the stringed musical instrument mode, and when using an electronic keyboard musical instrument, Will set the keyboard mode.

<Aftertouch Input Processing> As described above, every time 1 byte of MIDI data is input to the MIDI interface 1-6, the microcomputer receives the MIDI data according to the interrupt routine (FIG. 2D).
2 and recorded in a MIDI buffer on the RAM 1-9. Processing for the MIDI data stored in the buffer is executed in 2-6-5 of the general flow. When the aftertouch data is given by MIDI, an electronic wind instrument is used as an external instrument, and when the aftertouch data is generated by the breath pressure for the mouthpiece, it is frequently used for delicate control of the breath pressure.
MIDI after touch data is MIDI interface 1
-6 to the electronic musical instrument 1. If it is attempted to sequentially process all of these MIDI after touch data, the after touch effect is delayed with respect to the player's performance operation due to the processing time, and the effect expected by the player cannot be obtained. Therefore, in this embodiment, in order to ensure that the effect is not delayed even in the worst case, the maximum value of the after touch data obtained in the current cycle in the MIDI input processing routine 2-6-5 is used. An object is selected as aftertouch data to be processed. That is, as shown in FIG. 7, it is checked in step 7-1 whether or not after-touch data has been received. If it has been received, the maximum after-value is set for each MIDI channel as shown in step 7-2. Find out, save it, clear others.

<Form of Aftertouch Effect> In the case of the present embodiment, it is possible to determine which element of the musical tone the aftertouch data acts on within the range of FIG. 3 described above.
That is, the amplifier bias and / or the vibrato depth can be modulated by aftertouch. However, in the following description, it is assumed that amplifier bias is controlled by aftertouch. On the other hand, the amplifier bias is also controlled by the LFO tremolo (growl), modulation wheel, definable controller, and foot volume in addition to aftertouch, but control other than aftertouch will be described only as necessary.

<Tone Control Data Creation Process> The aftertouch data of the maximum value in each cycle selected in the aftertouch input process is processed in the tone control data (in this case, amplifier bias data) creation process routine shown in FIG. You. This routine is a subroutine of the control data change process 2-2-2 in the timer interrupt routine (FIG. 2B). In the tone control data creation process shown in FIG. 8, among the elements acting on the amplifier bias, the manipulator data, ie, MIDI after touch data, modulation wheel data, definable controller data,
An amplifier bias component from the foot volume data is created in consideration of the sense data (the remaining amplifier bias component is a component based on the LFO tremolo (growl) obtained in the routine 2-2-5). In creating the amplifier bias component, the musical instrument performance mode is referred to, and the amplifier bias component is generated in a different manner depending on whether or not the wind instrument performance mode. In particular, in the case of the embodiment, the ROM 1-1 is applied in a non-linear manner so that the manner in which the aftertouch data representing the breath pressure in the wind instrument playing mode acts on the amplifier bias is applied in a non-linear manner in accordance with the player's intention.
8, a data conversion table indicating the characteristics of the operation is prepared. However, since it is not desirable to prepare a conversion table for the entire range of sense data from the viewpoint of storage capacity, some conversions are performed by direct calculation.

Referring to the flow of FIG. 8, first, step 8
At -1, the sum of the senses that are modulation ON to the amplifier bias is calculated. For example, for the setting contents of FIG. 3, the after touch sense 99 is the calculation result A0. Note that the setting data in FIG. 3 can be data attached to a tone color, and can be automatically changed (set) by tone color switching. next,
In step 8-2, each operator data (0 to 127) whose modulation is on is multiplied by the sense (0 to 99).
Divide by 127 to compress that data to 0-99,
The sum of the resulting data is calculated and set to B0. For example, if the settings are as shown in Fig. 3 and 06FH is given as MIDI after touch data, the result is
It becomes 86. Next, the process proceeds to step 8-3, where it is determined whether or not the mode is the tube mode. That is, bit 5 of the mode register M shown in FIG. 5 is tested, and if "1", the mode is other than the tube mode.

In step 8-4, the standardized operator data B0 is subtracted from the standardized sense A0 to obtain amplifier bias data ABD. As a result, in the musical instrument performance mode other than the tube mode, the volume and timbre change linearly with respect to the operator data (which may be after touch data).

On the other hand, in the tube mode, the process proceeds to step 8-5, where it is determined whether or not the reference sense A0 is 92 or more. If the reference sense A0 is 91 or less, the process proceeds to step 8-6, where the sense data in the range of 0 to 91 is expanded to the re-standardized sense data A2 of 0 to 99, and the process proceeds to step 8-7. Subtract reference operator data B0 from sense data A2 to obtain amplifier bias data ABD.

If the sense data A0 is equal to or greater than 92, the process proceeds to step 8-8.
The data A1 (minimum 0 to 99) is obtained by subtracting the reference operator data B0 from 99, and is expanded to a minimum 0 to 127 to obtain the element number B1 in the conversion table (music conversion data conversion table).
Get. Further, in step 8-9, the sense data A0 to 92
Is subtracted, and the conversion table number No.
(0-7) is obtained, and in step 8-10, the B1st data of the table is read out and set as the amplifier bias data ABD. As a result, as shown in FIG. 9, changes in volume and timbre are in the range of the sense data A0 ≧ 92 in the tube mode.
It occurs according to the size of the operation data (MIDI after touch data).

<Creation and transfer of final amplifier bias data> The amplifier bias data generated in the process of FIG. 8 is amplifier bias data generated from the operator data (which may include MIDI after touch data) in a certain section (cycle). The operator data in the cycle (1) is data completely independent in processing. Therefore, if this amplifier bias data is sent to the sound source 1-10 as it is, small fluctuations in each cycle of the operator data, especially aftertouch data indicating the strength of breath, which is a problem in the wind instrument playing mode, will cause the volume of the musical tone It will appear in the timbre, and a crunchy sound will be generated. Therefore, it is desirable to prevent this from occurring and perform a process of processing the amplifier bias data so that the characteristics change smoothly. Then, an amplifier bias component based on the LFO tremolo (growl) is added, and the resultant is transferred to the sound source 1-10 as a final amplifier bias. In the case of the embodiment, these processes are performed by the timer interrupt routine (the
This is performed in the tone volume change processing 2-2-6 in FIG. 2B). Details are shown in FIG.

First, in step 10-1, the previous amplifier bias data contained in ABDNEW is moved to ABDOLD to update the data, and the amplifier bias data ABD created from the current operation data, which is the processing result in FIG. 8, is stored in ABDNEW. set. Next, the routine proceeds to step 10-2, where it is determined whether or not the mode is the tube mode. When the mode is not the tube mode, there is no problem of the squealing sound, so the amplifier bias data (ABDNEW data) created from the current controller data is moved to B, and the value B
An amplifier bias component (processing result of the routine 2-2-5) based on the LFO tremolo (growl) is added to obtain final amplifier bias data C and transferred to the sound source 1-10 (steps 10-3 and 10-10). .

However, in the case of the tube mode, the after touch data indicating the strength of the breath may exhibit a state in which the player continues random small fluctuations in each cycle even though the player intends a constant breath pressure. In such a case, the small fluctuation is directly reflected on the amplifier bias data ABD. Therefore, if the same processing 10-3 and 10-7 as those in the non-tube mode are performed, a change in the state of the sound will occur in the musical tone. . Accordingly, as shown in 10-4 to 10-9, in the present embodiment, the variation of the after touch data in each cycle is evaluated, and in the case of a large variation, the faithful processing is assumed to indicate the intention of the player. However, in the case of small fluctuations, the process of smoothing the amplifier bias data ABD is performed in two stages. According to the flow, the variation of the after touch data in each cycle is the same as the previous amplifier bias data AB
Since the difference can be evaluated by the difference between DOLD and the amplifier bias data ABDNEW of the current cycle, the difference A0 is obtained in step 10-4. Subsequently, in step 10-5, it is determined whether the difference A0 is less than the threshold value X0. If the difference A0 is less than the threshold value X0, it is considered that the amplifier bias data is slightly fluctuated.
A process 10-6 for reducing the difference A0 is performed (here, the size is set to 1/4). When the difference is equal to or larger than X0 but smaller than the second threshold value X1 (> X0), 1 is set. Change to / 4A0 + 1 / 8A0 (steps 10-7 and 10-8). Step 10-
6. Any other suitable compressed data processing can be used for the arithmetic processing in steps 6 and 10-9. In step 10-4, a change in after touch data or amplifier bias data can be evaluated by processing other than that shown in the figure. . Fluctuation magnitude A0
In step 10-9, the difference A0 selectively compressed is added to or subtracted from the previous amplifier bias data ABDOLD, and the result B is saved in ABDNEW as the current amplifier bias data for the operator. The data B is obtained by smoothing the variation of the after touch data for each cycle. The point at which the amplifier bias data A relating to the LFO tremolo (growl) is added to the smoothed amplifier bias data B of the manipulator and is transferred to the sound source 1-10 as final amplifier bias data C (step 10-10) is another point. This is the same as in the musical instrument playing mode. As a result, when aftertouch data representing breath pressure is input to the present electronic musical instrument 1 in the wind instrument playing mode, the musical tone characteristic change that is unnatural and inconsistent as in a conventional electronic musical instrument is eliminated, and the demand of the player is satisfied. You will get.

The description of the embodiment is finished above, but various modifications and changes can be made without departing from the scope of the present invention. For example, in the above embodiment, only the volume, timbre, and pitch are described as the configuration results of the musical tone to which the aftertouch acts, but it is also possible to apply it to elements such as an effector. Although the iPD sound source has been exemplified as the sound source 1-10, any other suitable digital sound source can be used. Also, the aftertouch data in the wind instrument mode has been described as data indicating breath pressure, but may be other blowing information, for example, information on the strength of biting the lips.

[Effects of the Invention] As is apparent from the above description, according to the present invention, at least the first control mode and the second control mode can be switched and selected, and the selected mode is the first control mode. And when the range of change between the current after-touch data received by the after-touch data receiving means and the previous after-touch data is small, based on both the current and previous after-touch data, the change in the characteristic of the musical tone Since the control data is generated so that the ratio is suppressed, when the range of the change of the aftertouch data is small, the change is unintended by the player and the current and previous aftertouch data are determined. Based on the data, control data is generated and generated so that the rate of change in the characteristic of the musical tone is suppressed. The characteristic change of the unpleasant musical tone disappears,
When the after-touch data gradually changes with a small change width, the characteristics of the musical tone do not suddenly change at a certain point in time, and the after-touch effect always expected by the player can be obtained.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an electronic musical instrument to which the present invention is applied.
FIG. 2A is a flowchart of a timer interrupt process for taking the states of the keyboard 1-1 and the switch 1-3 of FIG. 1 into the microcomputer 1-2, and FIG. 2B is a process for controlling various tone characteristics. FIG. 2C is a flow chart of the timer interrupt routine shown in FIG.
12 is a flowchart for executing MIDI control, FIG. 2D is a flowchart for MIDI reception processing, FIG. 2E is a flowchart for MIDI transmission processing, FIG. 2F is a flowchart for overall operation, and FIG. 3 is an example of setting tone control data. FIG. 4 is an arrangement diagram of switches placed on the switches 1-3 in FIG. 1, and FIG. 5 is a display unit 1--1 in FIG.
5 is a diagram showing the contents displayed in FIG. 5, FIG. 6 is a diagram showing a change in internal mode data when the musical instrument playing mode is switched, FIG. 7 is a flowchart relating to selection of the maximum value of after touch data, and FIG. FIG. 9 is a flowchart for creating tone control data (amplifier bias data component) from aftertouch data and the like. FIG. 9 shows the volume of a tone generated based on aftertouch when a tone control data creation table is selected in the wind instrument playing mode. FIG. 10 is a flow chart for performing a smoothing process of the amplifier bias data in the wind instrument playing mode with respect to the generation of the final amplifier bias data to be sent to the sound source 1-10 in FIG. . 1-2 microcomputer, 1-3 switch, 1-8 ROM, 1-9 RAM, 3-1 normal switch, 3-2 cursor key, 3-3 ... Value key, M: Mode register.

Claims (3)

(57) [Claims] 1. Mode selection means for switching and selecting at least a first control mode and a second control mode, mode storage means for storing a mode selected by the mode selection means, and receiving after touch data And after-touch data receiving means for generating control data for controlling the characteristics of musical sounds based on the after-touch data received by the receiving means. In the first control mode, when the range of change between the current after-touch data and the previous after-touch data is small, the rate of change in the characteristic of the musical tone is suppressed based on the two after-touch data. Control data generating means for generating and generating the control data described above. apparatus. 2. The musical tone characteristic control device according to claim 1, wherein the control data generating means is configured to select, from the after-touch data group received by the receiving means every predetermined cycle in the first control mode. A representative aftertouch data is extracted, and control data corresponding to the extracted aftertouch data is generated.A difference between the control data generated in the current cycle and the control data generated in the previous cycle is calculated. By calculating
The width of change between the current aftertouch data and the previous aftertouch data is detected, and when the calculated difference is larger than a predetermined value, control data in the current cycle is generated and the calculated difference is When the value is smaller than the value of, the control data in the current cycle is not generated, the control data is newly generated from the control data in the current cycle and the control data in the previous cycle, and the newly generated control data is generated. Is generated as control data in the current cycle. 3. The tone characteristic control device according to claim 2, wherein said control data generating means, when said difference is smaller than a predetermined value, in a mode corresponding to a degree of said small value in a current cycle. A tone characteristic control device, wherein control data and control data in a previous cycle are arithmetically processed to newly generate control data.