JP4253607B2 - Electronic musical instrument tuning correction apparatus, electronic musical instrument tuning correction method, computer program, and recording medium - Google Patents

Description

  The present invention relates to an electronic musical instrument tuning correction apparatus, an electronic musical instrument tuning correction method, a computer program, and a recording medium, and is particularly suitable for an electronic musical instrument that performs stretch tuning.

  In recent years, electronic circuit technology represented by LSI technology has made it possible to easily control the pitch digitally by using a “program counter method”, a “frequency number method”, or the like as a method for generating a musical sound signal. .

  For example, the “frequency number method” uses digital time-sharing operations to simultaneously generate pitch frequencies for multiple tone generation channels in a single circuit, or to digitally process frequency number data. By doing so, it became possible to express real-time behavior.

  In addition, by performing digital processing, the error in pitch setting accuracy can be fixed to about 1%, so the accuracy of the pitch difference of about one cent to several cents necessary for the proper use of the “temperament” that is required by experts in music is accurate. It became possible to set a proper pitch. Furthermore, by digitally controlling the correspondence between the pitch frequency and the keyboard, it is possible to generate a musical sound after instantaneously transposing to any key.

  Therefore, in the case of recent electronic musical instruments, the frequency is doubled when it goes up by one octave, and the frequency becomes half when it goes down by one octave. There has also been proposed an electronic musical instrument that is lower and that allows higher tuning (hereinafter referred to as stretch tuning) to be performed on the upper keyboard.

  As described above, some electronic musical instruments that can perform stretch tuning include a switch that allows a user to set whether or not to perform stretch tuning.

  As described above, when dual performance is performed on an electronic musical instrument that can perform stretch tuning, the pitch of each timbre is controlled based on the data corresponding to the pressed key number of each timbre of multiple timbres that are simultaneously sounded. Then, since the tuning curve data of each timbre to be used is different, there may be a case where it is difficult to hear due to the inconvenience.

  In order to prevent such an inconvenience, for example, in the case of the “pitch control device for electronic musical instrument” proposed in Patent Document 1, there is only one tone color as a reference for tuning control in the dual performance mode. The timbres that are sounded simultaneously are tuned according to the standard so as not to produce swaying during dual performance.

JP-A-10-222167

  In the case of an electronic musical instrument having a variety of musical instrument tones, such as an ensemble piano, it is preferable to perform stretch tuning in order for instruments other than the piano, such as strings tones, to sound brilliantly. When performing the above-mentioned stretch tuning, it is preferable to perform the stretch tuning with a stretch tuning curve suitable for the tone to be performed.

  However, in the case of the “pitch control device for an electronic musical instrument” described in Patent Document 1, there is one timbre that is the reference for tuning control during dual performance, and each timbre that is sounded simultaneously is the timbre that is the reference. Tuned based on stretch tuning curve. For this reason, there are cases where a certain tone color is not suitable for dual performance in which octave performance is incongruent.

  In order to prevent such inconvenience, if the stretch tuning is stopped for all the parts in the dual performance, there is a problem that the performance is lacking in the gorgeousness.

In Patent Document 1, the player selects one timbre that is the reference for tuning control during dual performance, or the timbre that is the reference is predetermined.
In view of the above-described problems, the present invention has an object to realize a dual performance that is gorgeous and has no sense of incongruity by enabling stretch tuning to be performed for each tone sounded simultaneously during dual performance. .

An electronic musical instrument rhythm correction device according to the present invention is a rhythm correction device for an electronic musical instrument that can simultaneously generate a plurality of types of timbres by a musical tone signal generator, and a timbre that sets a desired timbre among the plurality of types of timbres. Stretch tune data corresponding to each tone color and key number that can be set by the setting means and the tone color setting means, the first stretch tune data used during solo performance, and the second stretch tune data used during performance that simultaneously produces a plurality of timbres By means of a key input, a tuning curve information storage means for storing the stretch tuning data of the entire key range in the tuning curve information storage section, a performance form judging means for judging whether the performance is a solo performance or a performance in which a plurality of timbres are pronounced simultaneously, and key input When the pronunciation is instructed, the performance form judging means judges the tuning data corresponding to the tone color and the key number set by the tone color setting means. And tuning data reading means for reading from said tuning curve information storage unit as the tuning curve data corresponding to the response rates embodiment determines a pitch corresponding to the tone color and key number by stretch tuning data read by the rhythm data reading means, and the determined And a control means for correcting the pitch frequency of the musical tone to be generated and sending it to the musical tone signal generator so that the timbre is generated at a frequency corresponding to the pitch .

A tuning correction method for an electronic musical instrument according to the present invention is a tuning correction method for an electronic musical instrument that can simultaneously generate a plurality of types of timbres by a musical tone signal generator, and a timbre that sets a desired timbre from among the plurality of timbres. Stretch tuning data corresponding to each tone color and key number that can be set in the setting step and the tone color setting step, the first stretch tuning data used during solo performance, and the second stretch tuning data used during performance in which a plurality of tone colors are pronounced simultaneously A tuning curve information storing step for storing the stretch tuning data of the entire key range in the tuning curve information storage unit, a performance form determining step for determining whether the performance is a solo performance or a performance that simultaneously produces a plurality of tones, and key input When the pronunciation is instructed, the performance form determination step determines the tuning data corresponding to the tone and key number set in the tone setting step. And tuning data reading step of reading from the rhythm curve information storage unit as the tuning curve data corresponding to the response rates embodiment determines a pitch corresponding to the tone color and key number by stretch tuning data read by the rhythm data reading step, and the determined And a control step of correcting the pitch frequency of the musical tone to be generated and sending it to the musical tone signal generator so that the timbre is generated at a frequency corresponding to the pitch .

  The computer program of the present invention is characterized by causing a computer to execute each process of the tuning correction method described above.

  The recording medium of the present invention is characterized by recording the computer program described above.

  According to the present invention, since it is possible to perform pitch adjustment independently for all keys according to the key number of each tone color, it becomes possible to always control the pitch with the optimal tuning curve data corresponding to the selected tone color, By making use of the characteristics of the timbre, it is possible to perform a good performance that is natural and comfortable.

  According to another feature of the present invention, when playing a plurality of timbres simultaneously, the timbres that are simultaneously sounded are controlled by the second stretch tuning data for dual performance. It is possible to realize a simultaneous sounding performance that is gorgeous and has no sense of incongruity.

(First embodiment)
DESCRIPTION OF EMBODIMENTS Embodiments of an electronic musical instrument tuning correction device, an electronic musical instrument tuning correction method, a computer program, and a recording medium according to the present invention will be described below with reference to the accompanying drawings. In the following embodiments, a performance that simultaneously produces a plurality of sounds is referred to as a dual performance, and includes a performance (ensemble performance) that simultaneously produces two or more sounds.
FIG. 1 is a schematic block diagram showing the overall configuration of an electronic musical instrument having an electronic musical instrument tuning correction apparatus according to the present invention.

  In FIG. 1, the CPU 1 controls each part of the electronic musical instrument in accordance with a control program stored in the program memory unit of the ROM 2, and performance information (mainly key range information here) 24 stored on the ROM 2, The tuning curve data is read based on the timbre information 25, the waveform reading speed is calculated, and the control is sent to the musical tone signal generator 7.

  In order to perform such control, the CPU 1 is provided with a timbre setting unit 21, a timbre selection unit 22 and a control unit 23, a tuning data selection unit 230, and tuning data reading means 235. The timbre setting unit 21 sets a timbre specified by the operation of the timbre selection switch, for example, a timbre such as a guitar or a piano, and stores it in a predetermined area of the RAM 3. The setting state of the timbre performed by the timbre setting unit 21 is read by the control unit 23 and used for pitch control.

  The timbre selection unit 22 selects a timbre to be subjected to rhythm control during dual performance from among a plurality of timbres set by the timbre setting unit 21 and selected by the timbre selection unit 22. The timbre is read by the control unit 23 and temporarily stored in a predetermined area of the RAM 3.

  When the tone generation is instructed by pressing the key, the control unit 23 stores the tuning curve data (stretch tuning) corresponding to the tone number set by the tone color setting unit 21 and the key number of the pressed key. Control to read from 26 is performed.

  As described later, the tuning data selection unit 230 is used to select which of the average rhythm data and the stretch rhythm data stored in the storage medium 26 is used for tuning.

  The tune data reading means 235 performs a process of reading tune data corresponding to the timbre and key number set by the timbre setting unit 21 from the storage medium 26 according to the selection state by the timbre selection unit 22 during dual performance.

  The control unit 23 performs control for reading out the tuning curve data for dual performance from the tuning curve information storage unit 26 according to the key number of each tone color simultaneously generated for the tone color selected by the tone color selection unit 22.

  The ROM 2 stores tone data and various other fixed data in addition to the control program for operating the CPU 1 described above. The tuning curve data directly related to the present embodiment is stored in the tuning curve information storage unit 26 of the ROM 2. The tuning curve data (stretch tuning curve) stored in the tuning curve information storage unit 26 will be described in detail later with reference to FIG.

  The performance information storage unit 24 is configured as a set of event information, and the event information includes an identification code, a key number, keystroke strength, time information, and the like. In the present embodiment, key range information is mainly used in the performance information.

  The timbre information storage unit 25 stores musical tone data of each timbre, and the timbre set by the timbre setting unit 21 is designated by a timbre pointer. That is, when the timbre pointer is changed by a panel operation, keyboard operation, pedal operation, etc., the data designated by the changed timbre pointer is read from the timbre waveform memory 8 and subjected to a predetermined calculation to obtain a musical tone. It is supplied to the signal generator 7.

  The RAM 3 defines a work area for the CPU 1, various registers for controlling the electronic musical instrument, counters, flags, and the like, and a data area in which necessary data stored in the ROM 2 is transferred and temporarily stored. An assigner memo or the like for storing data for assigning each tone generation circuit of the tone signal generator 7 to an unused channel is provided.

  Also, a plurality of registers in which data necessary for sound emission is set corresponding to the state of each key and switch on the operation panel 5, a key depression map for temporarily storing performance information generated by turning on / off the keyboard 4, A note-on counter is also provided in the RAM 3.

  The keyboard 4 is used for designating a musical tone to be generated, and is composed of a plurality of keys and a key switch that opens and closes in conjunction with the key pressing / release operation of these keys. A signal accompanying the key pressing / releasing operation is notified to the control unit 23, and is temporarily stored in a predetermined area of the RAM 3 by the control unit 23 and read out as necessary.

  In addition to the power switch, the operation panel 5 is provided with various switches and displays such as a mode designation switch, a melody selection switch, and a rhythm selection switch. Note that a dual switch 5A and a tone color selection switch (not shown) that are directly related to the present embodiment are provided on the operation panel 5.

  The set / reset state of each switch of the operation panel 5 is detected by a panel scan circuit included in the operation panel 5, and data relating to the detected set state of the switch is stored in the RAM 3 under the control of the control unit 23. Is stored in the area.

  The pedal 6 includes, for example, a damper pedal, a soft pedal, a loud pedal, etc., depending on the type of electronic musical instrument. The volume is controlled according to the amount of pedal depression, the timbre is changed, and a weak sound effect is exhibited. Is controlled to change the sound generation state and the sound state after sound generation.

  The musical tone signal generator 7 generates and outputs musical tone signals corresponding to various musical instruments by reading musical tone waveform data corresponding to the signal sent from the CPU 1 from the timbre waveform memory 8 and adding an envelope.

  For this reason, the tone signal generator 7 includes a tone generator 7a for generating a tone based on the stored contents of the tone color waveform memory 8, and an envelope setting unit 7b for setting an envelope based on the stored contents of the envelope information memory 9. And a multiplier 7d for multiplying the waveform by the envelope, a batting component setting unit 7c for setting the batting component based on the stored contents of the batting component information memory 10, and a batting component setting unit for the multiplication result of the multiplier 7d. An adder 7e is provided for adding the waveforms of the striking components set by 7c.

The tone color waveform memory 8 is composed of, for example, the ROM 2 and stores tone waveform data such as frequency number, waveform number, and mode data, which are data for generating a tone signal.
Waveform data such as weak hits and strong hits are also stored in the tone color waveform memory 8 and accessed by a not-shown weak hit component tone signal generation unit, strong hit component tone signal generation unit, etc. of the tone generation unit 7a.

  The envelope information memory 9 stores various envelope data corresponding to musical tone components, and stores musical tone waveform envelopes obtained when each key is depressed.

  For example, even when the same key is pressed, the envelope information memory 9 stores envelope data separately when the pedal is OFF, when it is ON, or when it is at a plurality of intermediate positions. Predetermined envelope data is selected using the contents of a selection register (not shown) as an address, and sent to the envelope setting unit 7b.

  The striking component information memory 10 stores the tone component waveform data whose frequency does not change according to the pitch, that is, the striking component waveform data, and the tone of each tone obtained when each key is depressed. The result of extracting the component related to the hitting sound from the waveform is stored.

  The tone signal output from the tone signal generator 7 is analog-converted by the D / A converter 11 and then sent to the sound system 12, amplified to a predetermined level by the amplifier, and then emitted from the speaker.

  FIG. 2 is a diagram for explaining the relationship between the factors that control the waveform reading speed. In the configuration shown in FIG. 2, when the predetermined timing is reached, the control unit 23 reads the key number of the key pressed from the performance information storage unit 24, and based on this, the key number based on, for example, the temperament is read from a temperament storage unit (not shown). Read data according to.

  Subsequently, the tone color set in the tone color information storage unit 25 is read, and tuning curve data for correcting the pitch is read from the tuning curve information storage unit 26 based on the tone number set as the key number, and the pitch is set. It is corrected and sent to the tone signal generator 7.

  The frequency number used by the tone generator 7a of the tone signal generator 7 is a value proportional to the sounding frequency (referred to as F number). For example, C, C #, D, D #, E, F, F # in the equal temperament. , G, G #, A, A #, B, and 12 data.

  Therefore, the pitch correction according to the key number and tone color is performed by multiplying the multiplier 7d by a predetermined value (frequency ratio) corresponding to the cent value as the pitch adjustment value for these data, and adding the pitch changed by the multiplication. A musical tone having a desired pitch is generated by accumulating in the device 7e.

  FIG. 3 is a diagram illustrating an example of tuning curve data stored in the tuning curve information storage unit 26. As shown in FIG. 3, in the present embodiment, two types of stretch tuning curves are stored in the tuning curve information storage unit 26 for each tone color. FIG. 3 representatively shows the tone colors of “piano” and “strings”.

  In these timbres, in the present embodiment, the tuning data selecting means 230 automatically determines whether the tuning data selecting means 230 provided in the CPU 1 is in the solo performance mode or the dual performance mode. The tuning data reading means 235 reads the tuning curve data corresponding to the performance mode from the tuning curve information storage unit 26.

  Then, the pitch corresponding to the tone color and key number is determined from the tuning curve data read out by the tuning data reading means 235, and the control means 23 gives the pitch frequency, so that the tuning is performed in the solo performance mode and the dual performance mode. The data can be made different.

  The tuning data selection means 230 determines that the performance is an ensemble performance when the performance is performed using the automatic accompaniment device, and recognizes the solo performance mode when the automatic accompaniment device is not used. The performer can arbitrarily select whether the performance is performed in the ensemble performance mode or the solo performance mode.

  As described above, the tuning curve information storage unit 26 stores the stretch curve tuning data for the dual performance mode and the stretch curve tuning data for the solo performance mode, and the tuning data selection means 230 is provided. It is possible to achieve a dual performance that is gorgeous and comfortable.

  That is, in the present embodiment, the “piano” has average rhythm data 31 and stretch curve tune data (first stretch rhythm data) 32 as shown in (a1) in the solo performance mode. ing. “Strings” has average rhythm data 33 and stretch curve rhythm data (first stretch rhythm data) 34 as shown in (b1) in the solo performance mode.

  On the other hand, as shown in FIGS. 3 (a2) and 3 (b2), in the dual performance mode, in the case of “piano”, the stretch curve tuning data (second waveform) is different from the stretch curve tuning data 32 in the solo performance mode. (Stretch tuning data) 320) is used for tuning.

  Similarly, in the case of “strings”, in the dual performance mode, tuning is performed using stretch curve tuning data (second stretch tuning data) 340 different from the stretch curve tuning data 34 in the solo performance mode. ing.

  Unlike the stretch curve tuning data 32 in the solo performance mode, the stretch curve tuning data 320 in the dual performance mode is tuning data close to the average rhythm data 31 in the high pitch range and the low pitch range. Similarly, the “strings” stretch curve tuning data 340 is different from the stretch curve tuning data 34 in the solo performance mode, and is the tuning data close to the average rhythm data 33 in the high tone range and the low tone range.

  As described above, in the present embodiment, the stretch curve tuning data (320, 340) in the dual performance mode is made different from the stretch curve tuning data (32, 34) in the solo performance mode, so that Even if stretch tuning is executed for a plurality of timbres in the performance mode, there is no sense of incongruity occurring in the high and low ranges, and a gorgeous dual performance is possible.

  FIG. 4 is a flowchart for explaining the operation of the electronic musical instrument tuning correction apparatus according to the present embodiment for controlling the pitch in accordance with each tone color and key number. Hereinafter, the operation of the present embodiment will be described with reference to the drawings.

  When a power switch or a reset switch provided on the operation panel 5 is turned on, an initialization process is performed (step S11). This initialization process initializes registers in the CPU 1 and registers defined in the RAM 3, moves predetermined data and programs stored in the ROM 2 to the RAM 3, and further sets a timbre pointer. It is a process of initializing and setting an initial tone.

  Next, it is checked whether or not there is a change in the setting of the tone color selection switch on the operation panel 5 (step S12). When the setting of the timbre selection switch is changed, the timbre pointer is changed according to the timbre set by the timbre selection switch (step S13).

  Next, the key number of the pressed key is checked, and the tune curve data corresponding to the timbre and key number set together with the reference temperament is read from the tune curve information storage unit 26 and stored in a predetermined area of the RAM 3. Then, the process returns to step S12.

  Thus, in the sound generation process of the main routine when there is an event for changing the timbre, the pitch is controlled by the tuning curve data according to the timbre and the key number.

  On the other hand, if the result of determination in step S12 is that there is no change in the setting of the timbre selection switch, it is checked whether or not a key on the keyboard 4 has been depressed (step S14). If the result of this determination is that a key has been depressed, assignment processing is performed in accordance with the depressed key, a predetermined waveform is read, and the process returns to step S12 (step S15).

  This assignment process is a process for allocating which of the tone generation units 7a provided for the number of polyphonics in the tone signal generation unit 7 to use to generate a tone signal according to the status of the empty channel.

  The tone color set in the tone generation unit 7a allocated by this allocation process, and data such as key touches and key numbers detected by the touch sensor are sent to the control unit 23 to generate a tone signal according to the key depression state. Instructed.

  On the other hand, if the result of determination in step S14 is that there is no key pressed, it is next checked whether or not there is a key released (step S16), and if there is no key released. Returns to step S12 as it is, and the same processing is repeated.

  On the other hand, if the result of determination in step S16 is that there has been a key released, key release processing is performed (step S17). The key release process is a process of sending predetermined envelope information to the already-operated envelope setting unit 7b in accordance with the key number of the key that has been released, the pedal information at that time, and the like.

  In this way, in step S13, the optimum tuning curve data corresponding to the selected tone color and key number is selected and the pitch frequency is determined, so that control according to each tone color and key number becomes possible, and acoustics are obtained. An electronic musical instrument with a good reverberation similar to that of a modern instrument can be provided.

  For example, if the pedal information is OFF, predetermined release data is sent, the envelope is quickly converged to “0”, and the sound generation is stopped. Then, the process returns to step S12, and the same processing is repeated thereafter.

  FIG. 5 is a flowchart for explaining the operation of the electronic musical instrument tuning correction apparatus having the dual performance mode. In the following, a tuning curve data selection operation associated with a timbre change when a plurality of timbres are simultaneously generated will be described with reference to the drawings.

  When a power switch or a reset switch provided on the operation panel 5 is turned on, an initialization process is performed (step S21).

  This initialization process initializes registers in the CPU 1 and registers defined in the RAM 3, moves predetermined data and programs stored in the ROM 2 to the RAM 3, and further initializes the timbre pointer. And setting an initial tone.

  Next, it is checked whether or not the setting of the timbre selection switch on the operation panel 5 has been changed (step S22). As a result, if there is no change in the setting of the timbre selection switch, the process branches and proceeds to step S26.

  On the other hand, if the setting of the timbre selection switch has been changed, the panel event buffer of the RAM 3 is examined to determine whether or not the dual performance mode is set (step S23). The tuning data selection means 230 determines whether the dual performance mode or the solo performance mode.

  As a result, in the case of the dual performance mode, the stretch curve tuning data corresponding to the key number of the depressed key is read from the tuning curve information storage unit 26 by the tuning data selection unit 230 and becomes the basic pitch. Is corrected (step S24), temporarily stored in a predetermined area of the RAM 3, returns to step S22, and the same processing is repeated thereafter.

  Thus, in the case of dual performance, the stretch curve tuning data is read out based on the tone color selected by the tone color selection unit 22 and the key number of each tone sounded simultaneously, and the pitch of each tone color is controlled. Therefore, it is possible to realize a dual performance that is gorgeous and comfortable.

  On the other hand, if the dual performance mode is not set in step S23, the process branches to step S24, where the key number is checked, and the stretch curve tuning data corresponding to the set tone color and key number is read from the tuning curve information storage unit 26. After being stored in a predetermined area of the RAM 3, the process returns to step S22.

  The processing operations from step S25 to step S28 are the same as the processing from step S14 to step S17 in FIG.

  Accordingly, it is possible to provide an electronic musical instrument tuning correction device that can realize a dual performance that is gorgeous and has no sense of incongruity when a plurality of timbres are simultaneously generated.

  In this embodiment, the pitch is controlled by performing a calculation based on the basic pitch and the correction value corresponding to the tone and key number for the basic pitch read from the tuning curve information storage unit 26. Although described as an example, the present invention is not limited to this.

  For example, at the time of tuning curve data creation, calculation processing is performed in consideration of the basic pitch and the correction value corresponding to each tone color and key number for the basic pitch, and the result of the calculation processing is a tuning curve information storage unit. 26, and the pitch may be controlled based on the data read from the tuning curve information storage unit 26.

  In the above-described embodiments, “piano” and “strings” have been described. However, the present invention can be similarly applied to keyboard instruments such as harpsichord, wind instruments such as flutes and trumpet, and stringed instruments other than strings. If stretch tuning is performed, such as “organ”, a chord is swelled, which is not preferable.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS.
In the second embodiment, the CPU 1 is provided with setting means 240 for setting so that tuning suitable for the main tone color can be performed during dual performance. The setting unit 240 includes “DualA” 241, “DualB” 242, a stretch switch 243, and a main tone recognition unit 244.

  For example, as a parameter that can be set by the system, a keyboard part piano tuning curve stretch switch 243 is provided. If the stretch switch 243 is set to “ON”, the stretch switch can be always turned on. If 243 is set to “OFF”, the stretch switch can always be set to OF.

  Further, when performing a dual performance including piano timbre, the main timbre recognition unit 244 determines the timbre to be used mainly by comparing the volume of the piano timbre with other timbres (hereinafter referred to as strings timbre). Like to do.

  FIGS. 7A to 7D are diagrams illustrating a system mechanism that allows an operator to set whether or not to perform stretch tuning. In FIG. 7, the volume attached to the first fader “Dual A” 241 represents the piano, and the volume attached to the second fader “Dual B” 242 represents the strings.

  The state shown in FIG. 7A is a case where “DualB” 242 is set to be larger than “DualA” 241, where “DualA” 241 is “piano” and “DualB” 242 is “strings”. In this case, the stretch is a string. When “Dual A” 241 is “Strings” and “Dual B” 242 is “Piano”, the stretch is a piano.

  FIG. 7B shows the case where “DualA” 241 is “Piano” and “DualB” 242 is “Strings” in FIG. 7A, and the setting volume of “Piano” is higher than the volume of “Strings”. Is smaller, the stretch switch 243 is turned OFF, and the string is in a stretch tuning state.

  FIG. 7C shows a state in which the volume setting of “DualA” 241 is greatly changed from the state of FIG. 7B, and is set to m% larger than the setting volume of “DualB” 242. Further, the stretch switch 243 is turned on, indicating that the piano is being stretch-tuned.

  FIG. 7D shows a state in which the volume setting of “DualA” 241 is changed to be smaller than the state of FIG. 7B, and is set to be n% smaller than the setting volume of “DualB” 242. Further, the stretch switch 243 is turned OFF, indicating that the strings are being stretch tuned. The “DualA” 241, “DualB” 242 and the stretch switch 243 are shown for easy understanding of the functions, and can be executed by internal program processing. It is not necessary to provide it.

Next, the procedure of the stretch tuning process of the present embodiment will be described with reference to the flowchart of FIG.
When the process is started, an initialization process is first performed in step S81. This initialization process is the same as that described with reference to the flowcharts of FIGS. 4 and 5 described above. Initialization of registers in the CPU 1 and registers defined in the RAM 3 is performed and stored in the ROM 2. The predetermined data or program is moved to the RAM 3, and the timbre pointer is initialized to set the initial timbre.

  Next, in step S82, it is checked whether or not the timbre switch has been changed. This process is also the same process as described in the flowcharts of FIGS. If there is a change as a result of the determination as to whether or not there is a change, the process proceeds to step S83 to perform a timbre change process.

  Next, proceeding to step S84, it is determined whether or not the changed tone color is a piano tone color. As a result of the determination, if the changed tone color is a piano tone color, the process proceeds to step S85, and it is determined whether or not the other part is a piano tone color. If the result of this determination is that the other part is a piano timbre, the process proceeds to step S86 to perform a piano timbre stretch process.

  On the other hand, as a result of the determination in step S85, if the other part is not a piano tone, the process proceeds to step S87, and the volume of the “Dual A” 241 is “Dual B” as described in FIG. It is determined whether or not m% is greater than the value of 242. As a result of this determination, if so, the process proceeds to step S86 to perform a “piano timbre” stretch process.

  As a result of the determination in step S87, if the volume of the “Dual A” 241 is not m% or more than the value of “Dual B” 242, the process proceeds to step S88 to perform the “strings tone” stretching process.

  On the other hand, if the result of determination in step S84 is not “piano timbre”, the process proceeds to step S89 to determine whether the other part is a piano timbre. If the result of this determination is that the other part is not a “piano timbre”, the process proceeds to step S88 to perform a “strings timbre” stretch process.

  If it is determined in step S89 that the other part is a piano tone, the process proceeds to step S90, and whether or not the volume of the “DualA” 241 is n% or less than the value of “DualB” 242. Judging. As a result of this determination, if so, the process proceeds to step S88 to perform the “string tone” stretch process.

  If it is determined in step S90 that the volume of the “Dual A” 241 is not n% or less than the value of “Dual B” 242, the process proceeds to step S91 to perform a “piano timbre” stretch process. In the present embodiment, since the stretch process is performed as described above, it is possible to perform tuning suitable for the main tone color when performing dual performance with a plurality of tone colors.

  If it is determined in step S82 that the timbre switch has not been changed, the process proceeds to step S92 to determine whether the volume has been changed. As a result of this determination, if it has been changed, the process proceeds to step S93 to perform a volume change process, and then proceeds to step S84.

  If the result of determination in step S92 is that the volume has not been changed, the process proceeds to determination of a keyboard event in step S94. The determination of the keyboard event in step S94, the sound generation / mute process in step S95, and the other processes in step S96 are the same as those of the normal electronic musical instrument.

  In the first embodiment and the second embodiment, for “organ”, “average rhythm data” and “stretch curve rhythm data” are the same. In other words, stretch processing is not performed for the “organ”. Therefore, when the main timbre is “organ”, the stretching process is turned off.

(Another embodiment of the present invention)
A software program for realizing the functions of the above-described embodiment for a computer in an apparatus or system connected to the various devices so that the various devices are operated to realize the functions of the above-described embodiments. What was implemented by supplying the code and operating the various devices according to a program stored in the computer (CPU or MPU) of the system or apparatus is also included in the scope of the present invention.

  Further, in this case, the program code of the software itself realizes the functions of the above-described embodiment, and the program code itself and means for supplying the program code to the computer, for example, the program code The stored recording medium constitutes the present invention. As a recording medium for recording the program code, for example, a flexible disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

  Further, by executing the program code supplied by the computer, not only the functions of the above-described embodiments are realized, but also the OS (operating system) or other application software in which the program code is running on the computer. The program code is also included in the embodiment of the present invention even when the functions of the above-described embodiment are realized in cooperation with the above.

  Further, after the supplied program code is stored in the memory provided in the function expansion board of the computer or the function expansion unit connected to the computer, the CPU provided in the function expansion board or function expansion unit based on the instruction of the program code The present invention also includes a case where the functions of the above-described embodiment are realized by performing part or all of the actual processing.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating an overall configuration of an electronic musical instrument having an electronic musical instrument tuning correction device according to a first embodiment of this invention. It is a figure explaining the read-out control of the waveform of the electronic musical instrument of 1st Embodiment. It is a figure which shows an example of the stretch curve tuning data memorize | stored in the tuning curve information storage part of the electronic musical instrument of 1st Embodiment. 4 is a flowchart for explaining the operation of each tone color and pitch control in the electronic musical instrument of the first embodiment. 6 is a flowchart for explaining the pitch control operation in the dual performance mode in the electronic musical instrument of the first embodiment. FIG. 10 is a block diagram illustrating an overall configuration of an electronic musical instrument having a second embodiment and having an electronic musical instrument tuning correction device; It is a figure explaining the setting means provided in the electronic musical instrument of 2nd Embodiment. It is a flowchart explaining an example of the stretch process performed in 2nd Embodiment.

Explanation of symbols

1 CPU
2 ROM
3 RAM
4 keyboard 5 operation panel 5A dual switch (dual performance instruction means)
6 Pedal 7 Musical tone signal generator 7a Musical tone generator 7b Envelope setting unit 7c Impact component setting unit 7d Multiplier 7e Adder 8 Tone waveform memory 9 Envelope information memory 10 Impact component information memory 11 D / A converter 12 Sound system 21 Tone Setting part (tone setting means)
22 Tone selection part (tone selection means)
23 Control unit (control means)
24 performance information storage unit 25 timbre information storage unit 26 tuning curve information storage unit (tuning curve information storage means)
230 tuning data selection means 235 tuning data reading means 240 setting means 241 first fader 242 second fader 243 stretch switch

Claims (10)

A tuning correction device for an electronic musical instrument capable of simultaneously producing a plurality of types of timbres by means of a musical tone signal generator,
Timbre setting means for setting a desired timbre from among the plurality of timbres;
Stretch tune data corresponding to each tone color and key number that can be set by the tone color setting means, the first stretch tune data used during solo performance, and the second stretch tune data used during performance that simultaneously produces a plurality of timbres Tuning curve information storage means for storing the above in the tuning curve information storage section over the entire key range,
A performance form judging means for judging whether the performance is a solo performance or a performance that simultaneously produces a plurality of tones;
When the pronunciation is instructed by key input, the tuning data corresponding to the tone color set by the tone color setting means and the key number is used as tuning curve data according to the performance form determined by the performance form determination means. Tuning data reading means for reading from the storage unit;
The tone of the musical tone to be generated so that the pitch according to the tone color and the key number is determined by the stretch tuning data read by the tuning data reading means, and the tone is generated at the frequency according to the determined pitch. And a control means for correcting the high frequency and sending it to the musical tone signal generator.   2. The tuning correction apparatus for an electronic musical instrument according to claim 1, wherein the stretch tuning data stored in the tuning curve information storage unit is a deviation from a basic pitch.   The performance form determining means determines that the performance using the automatic accompaniment device is a performance that simultaneously generates a plurality of timbres, and determines that the performance is a solo performance when performing a manual performance without using the automatic accompaniment device. The tuning correction apparatus for an electronic musical instrument according to claim 1 or 2,   The stretch tuning data stored in the tuning curve information storage unit is a correction value that takes into account a basic pitch and a deviation from the basic pitch. A tuning correction apparatus for an electronic musical instrument according to claim 1. A tuning correction method for an electronic musical instrument capable of simultaneously producing a plurality of types of timbres with a musical tone signal generator,
A timbre setting step for setting a desired timbre among the above-mentioned plurality of timbres;
Stretch tune data corresponding to each timbre and key number that can be set in the timbre setting step, the first stretch tune data used during solo performance, and the second stretch tune data used during performance that produces a plurality of timbres simultaneously. A tuning curve information storage step for storing the above in the tuning curve information storage unit over the entire key range,
A performance form determination step for determining whether the performance is a solo performance or a performance that simultaneously produces a plurality of tones;
When the pronunciation is instructed by key input, the tuning data corresponding to the tone color set in the tone setting step and the key number is used as tuning curve data corresponding to the performance mode determined in the performance mode determination step. A tuning data reading step to be read from the storage unit;
The tone of the musical tone to be generated so that the pitch corresponding to the tone color and the key number is determined by the stretch tuning data read in the tuning data reading step, and the tone is generated at the frequency corresponding to the determined pitch. And a control step of correcting the high frequency and sending it to the musical tone signal generator.   6. The electronic musical instrument tuning correction method according to claim 5, wherein the stretch tuning data stored in the tuning curve information storage unit is a deviation from a basic pitch.   In the performance form determining step, it is determined that the performance using the automatic accompaniment device is a performance that generates a plurality of timbres simultaneously, and when performing a manual performance without using the automatic accompaniment device, it is determined that the performance is a solo performance. The rhythm correction method for an electronic musical instrument according to claim 5 or 6,   The stretch tuning data stored in the tuning curve information storage unit is a correction value that takes into account a basic pitch and a deviation from the basic pitch. 2. A tuning correction method for an electronic musical instrument according to claim 1.   A computer program for causing a computer to execute each process of the tuning correction method according to claim 5.   A computer-readable recording medium having recorded thereon the computer program according to claim 9.

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