JP2008139720A - Electronic musical instrument and program applied to electronic musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop a function of a function control pedal, even in an electronic musical instrument equipped with a foot keyboard, without having a function control pedal such as a damper pedal. <P>SOLUTION: A computer section gives the function of the damper pedal to a specific key corresponding to a note number which equals to a damper note DNT in a plurality of keys of a foot keyboard by steps S22, S24 and S25 processing. Damping time in the function of the damper pedal which is given when the specific key is pressed, is controlled to change according to an after-touch value of the specific key by steps S24 and S30 processing. Moreover, existence of damper pedal function performance by the foot keyboard, the specific key in the foot keyboard for performing damper pedal function, and variation or fixing of the damping time of a musical sound signal are arbitrarily set by a player. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic musical instrument comprising a plurality of performance operators operated by the performer's feet, and comprising a foot keyboard for controlling the generation of a musical tone signal having a pitch assigned to the operated performance operator. The present invention relates to a program applied to musical instruments.

Conventionally, as shown in the following Patent Document 1, an electronic piano which is one of electronic musical instruments is well known. This electronic piano is usually provided with function control pedals that control the tone generation mode, such as damper pedal, sostenuto pedal, and soft pedal. Can be played. Also, an electronic organ having a foot keyboard, which is one of electronic musical instruments, usually does not include a function control pedal as described above.
Japanese Patent Application Laid-Open No. 06-337677

  The present invention is intended to provide an electronic musical instrument that does not include the function control pedal, and that can perform the function of the function control pedal even in an electronic musical instrument that includes at least a foot keyboard as a performance operation means. It is.

  In order to achieve the above object, the present invention is characterized by comprising a plurality of performance operators operated by the performer's feet and controlling the generation of a musical signal having a pitch assigned to the operated performance operator. Detecting means for detecting that a predetermined performance operator determined in advance or designated by a player among the plurality of performance operators is operated in an electronic musical instrument having at least a foot keyboard as a performance operation means When the detection means detects that the predetermined performance operator has been operated, the generation performance of the musical tone signal that is controlled by the performance of the performer is controlled by the predetermined performance operator. There is provided a change control means for performing change control as compared with the generation mode of the musical sound signal when there is not.

  In this case, as the performance operation means, for example, in addition to the foot keyboard, a hand keyboard composed of a plurality of keys to which a plurality of pitches are respectively assigned and operated by the performer's hands may be provided. The musical tone signal generated and controlled by the performer includes a musical tone signal generated by playing a hand keyboard other than the foot keyboard. Further, the generation mode of the musical tone signal that is changed and controlled by the change control means is a generation mode of a musical tone signal that is controlled by a function control pedal such as a damper pedal, a sostenuto pedal, or a soft pedal in electronic pianos and pianos, for example. The function of the damper pedal is a function that makes the decay time of all the musical sound signals generated when the pedal is depressed longer than the decay time of the musical signal when the pedal is not depressed. The function of the sostenuto pedal is a function that lengthens the decay time of only the tone signal related to the key being depressed (ie, during key depression) when the pedal is depressed compared to the decay times of other tone signals. The function of the soft pedal is a function that reduces the volume level of all the musical sound signals that are generated when the pedal is depressed compared to the volume level of the musical sound signals that are generated when the pedal is not depressed.

  In the feature of the present invention configured as described above, if the performer operates the predetermined performance operator included in the foot keyboard, the musical tone signal whose generation is controlled by the performance of the performer is controlled by the change control means. Is changed in comparison with the generation mode of the musical tone signal when the predetermined performance operator is not operated. For example, the tone signal generation mode is controlled in the same manner as when a function control pedal such as a damper pedal, a sostenuto pedal, or a soft pedal is depressed on electronic pianos and pianos. Therefore, according to the feature of the present invention, it is possible to perform with rich expressiveness using the foot keyboard.

  In another aspect of the present invention, the foot keyboard device includes an aftertouch sensor that detects a depth or strength when the plurality of performance operators are operated, and the change control means includes the aftertouch sensor. The present invention is also provided with a function of controlling the degree of change in the generation mode of the musical tone signal to be changed according to the detection value by the touch sensor. According to this, the manner in which the musical sound signal is generated is controlled in a more complicated manner, and a performance with richer expressiveness can be performed using the foot keyboard.

  In another aspect of the present invention, the foot keyboard device includes the after-touch sensor, and the change control unit generates the tone signal when a detection value by the after-touch sensor exceeds a predetermined value. And a change setting means for changing and setting the predetermined value is provided so as not to change the generation mode of the musical tone signal when the detected value does not exceed the predetermined value. According to this, if the performer sets the predetermined value to an appropriate value according to his / her preference, the change control of the musical sound signal generation mode can be realized at the time of the operation desired by the performer for the performer. Thus, the performer can easily perform using the predetermined performance operator.

  Furthermore, the implementation of the present invention is not limited to the invention of the electronic musical instrument, and can also be implemented as an invention of a computer program and method applied to the electronic musical instrument.

  Hereinafter, an embodiment of an electronic musical instrument according to the present invention will be described with reference to the drawings. FIG. 1 is an overall block diagram of an electronic musical instrument. This electronic musical instrument is provided with a setting operator group 13, a display 14, and a tone generator circuit 15 in addition to a hand keyboard 11 and a foot keyboard 12 as performance operation means.

  The hand keyboard 11 is composed of a plurality of keys that are operated by hand, and instructs generation and termination of a musical tone signal by pressing and releasing keys. The foot keyboard 12 is composed of a plurality of keys that are operated by a foot, and instructs generation and termination of a musical tone signal by pressing and releasing keys. Different keys are assigned to a plurality of keys of the hand keyboard 11 and the foot keyboard 12, and generation of a musical tone signal having the assigned pitch is controlled by a key pressing operation of each key. Although the pitch ranges of the hand keyboard 11 and the foot keyboard 12 are different for each model, in the present embodiment, the pitches C1 to C6 are assigned to the plurality of keys of the hand keyboard 11, and the plurality of keys of the foot keyboard 12 are assigned to the keys. The pitches C0 to C2 are assigned respectively. The operation of pressing and releasing a plurality of keys on the hand keyboard 11 and the foot keyboard 12 is detected by detection circuits 11a and 12a connected to the bus 20, respectively. In the foot keyboard 12, a plurality of aftertouch sensors 12b respectively corresponding to a plurality of keys are provided. The after touch sensor 12b detects the key pressing depth or key pressing strength of a plurality of keys, and outputs an after touch value representing the key pressing depth or key pressing strength to the bus 20 via the detection circuit 12a. . In the present embodiment, the after touch value can take a value that changes from “0” to “127” as the key pressing depth or key pressing strength increases.

  The setting operator group 13 is provided on the operation panel of the electronic musical instrument, and instructs the operation of each part of the electronic musical instrument and is used for setting various data. The operation of the setting operator group 13 is detected by a detection circuit 13 a connected to the bus 20. The display 14 is composed of a liquid crystal display, CRT, or the like provided on the operation panel, and displays characters, numbers, figures, and the like. The display content of the display 14 is controlled by a display circuit 14 a connected to the bus 20. The tone generator circuit 15 is connected to the bus 20 and generates a digital musical tone signal based on supplied performance data and various control data under the control of the computer unit 30 to be described later, and outputs it to the sound system 16. . The sound system 16 includes a D / A converter, an amplifier, a speaker, and the like, converts a supplied digital musical tone signal into an analog musical tone signal, and emits a musical tone corresponding to the analog musical tone signal.

  The electronic musical instrument also includes a computer unit 30 connected to the bus 20, an external storage device 41, a MIDI interface circuit 42, and a communication interface circuit 43. The computer unit 30 includes a CPU 31, a timer 32, a ROM 33 and a RAM 34. The external storage device 41 includes a nonvolatile recording medium such as an HDD, FDD, CD-ROM, MO, DVD, semiconductor memory, and a drive unit for each recording medium, and stores and reads data and programs described later. Is possible. These data and programs may be stored in advance in the external storage device 41, or may be taken in from the outside via the MIDI interface circuit 42 or the communication interface circuit 43.

  The MIDI interface circuit 42 can be connected to a MIDI-compatible external device 51 such as another electronic music apparatus or a personal computer, and the electronic musical instrument can communicate with the external device 51 in various programs and data. The communication interface circuit 43 can be connected to a communication network 52 so that the electronic musical instrument can receive various programs and data from the server computer 53 or transmit them to the server computer 53.

  Next, the operation of the embodiment configured as described above will be described. When a power switch (not shown) of the electronic musical instrument is turned on, the computer unit 30 starts executing the main program in FIG. 2 in step S10. After this start, the computer unit 30 sets various variables to initial values and temporarily stores them in the RAM 34 in step S11. Of the various variables, the damper on DON, the damper note DNT, the damper half DHF, and the damper value DMP, which are particularly necessary for the present embodiment, will be described.

  The damper on DON indicates whether or not the damper function is to be exhibited for a certain key among the plurality of keys of the foot keyboard 12, and the damper is set by “1”. Indicates that the function is exhibited, and “0” indicates that the damper function is not exhibited. This damper on DON is set to “1” in the initial setting in step S11. The damper function refers to the decay time of all musical sound signals that are generated for keys released from the hand keyboard 11 and / or foot keyboard 12 when the specific key is pressed. This is longer than when the key is pressed. FIG. 4 shows an envelope waveform of a percussive (for example, piano tone) musical tone signal for explaining the damper function. As shown by the solid line, the envelope waveform signal decays slowly after rising rapidly in synchronization with key-on (key-on) and rapidly decays in synchronization with key-off (key-off) when the damper function is not performed. To do. On the other hand, when the damper function is exerted, the envelope waveform signal slowly attenuates even after the key is released (key-off), as indicated by a broken line. “0” to “MAX” in the figure represent a changeable range of the decay time Td of the envelope signal after key-off, and this decay time Td is controlled by a damper value DMP which is one of the variables. Note that the damper value DMP is not a target of the initial setting in step S11, but is set according to the aftertouch value by a process described later.

  The damper note DNT represents a pitch corresponding to the specific key (a key that exhibits a damper function when pressed) among a plurality of keys of the foot keyboard 12. The damper note DNT is set to a value representing the pitch C2 corresponding to the highest note in the foot keyboard 12 by the initial setting in step S11. The damper half DHF indicates that the decay time Td of the envelope waveform signal is varied between “0” and “MAX” according to the damper value DMP by “1”, and the decay time Td is the damper value by “0”. This means that it is fixed to a predetermined value (for example, the maximum value MAX) regardless of DMP. The damper half DHF is set to “1” by the initial setting in step S11.

  After the process of step S11, the computer unit 30 repeatedly executes the circulation process including steps S12 to S14. The process of step S12 is a hand keyboard process for controlling the generation of a musical tone signal by playing the hand keyboard 11. The processing in step S13 is foot keyboard processing for controlling the generation of musical tone signals by playing the foot keyboard 12. The processing in step S14 is other processing for controlling the operation of the electronic musical instrument or setting various data in response to the operation of the setting operator group 13 or the like. In other processes, the initially set damper on DON, damper note DNT, and damper half DHF are updated by the player's operation of the setting operator group 13. By the update process by the player, whether or not the damper function is exhibited with respect to the damper on DON, the specific key in the foot keyboard 12 that exhibits the damper function with respect to the damper note DNT, and the damping time Td with respect to the damper half DHF is variable. Or fixation can be arbitrarily set by the performer.

  The hand keyboard process in step S12 will be briefly described. When the performer performs a key release operation on the keys in the hand keyboard 11, a signal representing the key release operation is supplied to the computer unit 30 via the detection circuit 11a. When any of the keys is pressed, the computer unit 30 supplies the tone generator 15 with a note number indicating the pitch corresponding to the pressed key and a signal instructing the start of generation of a musical sound. In response to these signals, the tone generator circuit 15 starts to generate a musical tone signal having a pitch corresponding to the depressed key. The tone color, envelope waveform, and the like of the generated musical tone signal are set according to the operation of the setting operator group 13 by the process of step S14. When the pressed key is released, the computer unit 30 supplies the tone generator circuit 15 with a signal for terminating the generation of the musical tone signal related to the released key. In response to this signal, the tone generator circuit 15 attenuates the musical tone signal related to the released key pitch, and thereafter ends the generation of the musical tone signal. The musical sound signal generated in this way is emitted through the sound system 16. As described above, the envelope waveform signal changes as shown in FIG. The envelope waveform signal shown in FIG. 4 represents a percussive envelope waveform signal. In the case of a sustain-type musical tone signal, the envelope waveform that rapidly rises from the key-on is rapidly attenuated and then the sustain level. And starts decaying again after key-off. The decay time after key-off is selectively controlled to be short or long as will be described in detail later.

  Next, the step keyboard processing routine of step S13 directly related to the present invention will be described. As described above, the foot keyboard processing routine is a routine for processing the generation of a musical tone signal in response to a key pressing operation of the foot keyboard 12. Even when any of the plurality of keys on the foot keyboard 12 is pressed / released, a signal indicating the key release / operation on the foot keyboard 12 is detected by the detection circuit in the same manner as the key pressed / released on the hand keyboard 11 described above. It is supplied to the computer unit 30 through 12a. In this case, the after touch sensor 12b also supplies a signal representing the after touch value during and during the key depression to the computer unit 30 via the detection circuit 12a.

  Details of the foot keyboard processing routine are shown in FIG. 3, and its execution is started in step S20. After the start of the foot keyboard processing routine, the computer unit 30 determines “Yes” in step S21 on the condition that any one of the plurality of keys of the foot keyboard 12 is pressed, The process after step S22 is executed. If the damper on DON is “1”, the note number of the pressed key is equal to the damper note DNT, and the damper half DHF is “1”, the computer unit 30 proceeds to steps S22 and S23. In step S24, the damper value DMP is set to a value corresponding to the current aftertouch value for the depressed key and supplied to the tone generator circuit 15. In the setting of the damper value DMP, the aftertouch value may be set as it is as the damper value DMP (see the broken line in FIG. 5), or by using a conversion table stored in advance in the external storage device 41, A damper value DMP that increases nonlinearly as the aftertouch value increases may be set (see the solid line in FIG. 5). In this case, a function prepared in advance may be used instead of the conversion table, and the conversion characteristics may be set to characteristics different from those shown in the figure.

  The tone generator 15 uses the supplied damper value DMP to give an effect equivalent to the function of depressing the damper pedal to all the musical sound signals generated according to the released key. That is, the decay time Td of the musical sound signal being generated is attenuated after being released, as shown by the broken line in FIG. The decay time Td is controlled according to the magnitude of the damper value DMP supplied from the computer unit 30 to the sound source circuit 15.

  If the after-touch value supplied from the foot keyboard 12 changes due to the key pressing state changing while the key of the foot keyboard 12 is being pressed, the computer unit 30 determines “Yes” in step S27. In step S28 and S29 similar to steps S22 and S23, both are determined as “Yes”. Then, the damper value DMP is set to a value corresponding to the current aftertouch value relating to the key being pressed, and supplied to the tone generator circuit 15 by the processing of step S30 similar to step S24. Therefore, in this case as well, the tone generator circuit 15 lengthens the decay time Td of all the musical sound signals that are being generated while being attenuated after the key release, as indicated by the broken line in FIG. However, in this case, the decay time Td is controlled according to the newly set damper value DMP by the process of step S30.

  On the other hand, if the damper on DON is “1” and the note number of the pressed key is equal to the damper note DNT, but the damper half DHF is set to “0”, the computer unit 30 In step S23, “No” is determined, and in step S25, the damper value DMP is set to the maximum value MAX (“127” in the present embodiment) and supplied to the sound source circuit 15. In this case, even if the after-touch value supplied from the foot keyboard 12 changes due to the key pressing state changing while the key of the foot keyboard 12 is being pressed, “ Since “No” is determined, the new setting of the damper value DMP and the supply process to the tone generator circuit 15 are not executed. In this case as well, the tone generator circuit 15 lengthens the decay time Td of all the tone signals being generated while being attenuated after the key is released. In this case, the decay time Td is fixed to the maximum value MAX, It does not change according to the touch value.

  Furthermore, if the damper on DON is not “1” or the note number of the pressed key is not equal to the damper note DNT, the computer unit 30 determines “No” in step S22, and proceeds to step S26. The sound generation process related to the foot keyboard 12 is executed. This sound generation process is the same except that the above-described process related to the key depression of the hand keyboard 11 is changed to the generation control of the tone signal corresponding to the key depression operation of the key on the foot keyboard 12. In step S26, the aftertouch value detected by the aftertouch sensor 12b of the foot keyboard 12 is also output to the tone generator circuit 15 and used for generating a musical tone signal. Here, if the damper on DON is not “1”, it means that the damper pedal function using the foot keyboard 12 is not performed. In this case, all keys belonging to the hand keyboard 11 and the foot keyboard 12 are released. The decay time of the musical sound signal at the time is controlled to be short as shown by the broken line in FIG. Even when the note number of the pressed key is equal to the damper note DNT, the sound generation process relating to the pressed key is executed and the generation of the tone signal is controlled. On the other hand, the note number of the key pressed is not equal to the damper note DNT. This means that a key other than the specific key to which the damper pedal function is given is pressed among the plurality of keys of the foot keyboard 12. means. As a result, in response to a key pressing operation on a key other than the specific key, the tone generator circuit 15 generates a musical tone signal having a pitch corresponding to the pressed key.

  As described above, even if the aftertouch value changes and it is determined “Yes” in step S27, the damper on DON is not “1”, or the note number of the pressed key is the damper note. If not equal to DNT, the computer unit 30 executes the process of step S31. In step S31, the aftertouch value detected by the aftertouch sensor 12b of the foot keyboard 12 is output to the sound source circuit 15. Then, the tone generator circuit 15 controls the generation of the musical tone signal by using the newly supplied after touch value instead of the after touch value supplied by the sound generation process in step S26.

  Next, a case where any key on the foot keyboard 12 is released will be described. When any key on the foot keyboard 12 is released, the computer unit 30 determines “Yes” in step S32, and executes the processes in and after step S33. If the damper on DON is “1” and the note number of the released key is equal to the damper note DNT, the computer unit 30 determines “Yes” in step S33, and in step S34. The damper value DMP is set to the minimum value “0” and supplied to the tone generator circuit 15. The tone generator circuit 15 controls the decay time Td of the tone signal released in accordance with the supplied damper value DMP. In this case, since the damper value DMP is set to the minimum value “0”, the decay time of the tone signal is shortened as shown by the solid line in FIG. In this case, the damper half DHF is not used as in the determination process in step S23 when the key is depressed, regardless of the damper half DHF, so that the decay time of the tone signal after the subsequent key release is always shortened. It is because it is controlled by. As a result, as with the case where the depression of the damper pedal is released, when a specific key assigned the damper pedal function is released, that is, when the depression of the key is released, all the musical sound signals that are generated are attenuated. Time is controlled short.

  On the other hand, if the damper on DON is not “1” or the note number of the pressed key is not equal to the damper note DNT, the computer unit 30 determines “No” in step S33, and proceeds to step S35. Mute processing related to the foot keyboard 12 is executed. This mute process is the same except that the process related to the key release of the hand keyboard 11 described above is changed to the end control of the tone signal according to the key release operation of the key of the foot keyboard 12. Here, if the damper on DON is not “1”, it means that the function of the damper pedal using the foot keyboard 12 is not exhibited, and the musical tone signal generated by the release of all the keys belonging to the foot keyboard 12 is rapid. After being attenuated, the sound is muted. On the other hand, the note number of the key pressed is not equal to the damper note DNT. This means that a key other than the specific key to which the damper pedal function is given is pressed among the plurality of keys of the foot keyboard 12. means. Thereby, in response to the key release operation of a key other than the specific key, the tone generator circuit 15 is conditioned on the condition that the damper on DON is “1” and the specific key is being depressed. The musical sound signal being generated by the key release operation of the foot keyboard 12 is attenuated slowly and then muted. If the damper on DON is “0” or the specific key is not pressed, the tone generator circuit 15 rapidly attenuates the musical sound signal being generated by the key release operation of the foot keyboard 12. Mute the sound.

  As can be understood from the above description of operation, according to the above embodiment, the number of keys of the foot keyboard 12 corresponding to the note number equal to the damper note DNT is supported by the processing of steps S22, S24, and S25 of FIG. Since the function of a damper pedal is given to a specific key, an electronic musical instrument that does not have a damper pedal can be played with rich expressive power using the foot keyboard. In addition, the decay time in the damper pedal function assigned to the specific key is changed and controlled according to the aftertouch value of the specific key by the processing of steps S24 and S30 in FIG. Use it for more expressive performance. Further, by the process of step S14 in FIG. 2, whether or not the damper function is performed, a specific key in the foot keyboard 12 that performs the damper function, and variable or fixed decay time Td can be arbitrarily set by the player. Therefore, the damper pedal function can be controlled in accordance with the player's will.

  Furthermore, in carrying out the present invention, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

  For example, in the above embodiment, the function of a damper pedal is adopted as a function assigned to a specific key of the foot keyboard 12. However, the present invention is not limited to this, and other function control pedal functions such as a sostenuto pedal function and a soft pedal function may be allocated as a function to be allocated to a specific key of the foot keyboard 12. Further, a plurality of functions may be simultaneously assigned to a plurality of keys on the foot keyboard 12. Note that the function of the sostenuto pedal is a function that lengthens the decay time of only the musical tone signal relating to the key being depressed (ie, during key depression) when the pedal is depressed compared to the decay times of other musical tone signals. The function of the soft pedal is a function that reduces the volume level of all the musical sound signals that are generated when the pedal is depressed compared to the volume level of the musical sound signals that are generated when the pedal is not depressed. In this case, the tone signal decay time in the function of the sostenuto pedal or the volume level of the tone signal in the function of the soft pedal may be variably controlled according to the aftertouch value of a specific key.

  Further, in the above-described embodiment and the modification, according to the depression operation of a function control pedal such as a damper pedal, a sostenuto pedal, or a soft pedal according to the aftertouch value of a specific key detected by the aftertouch sensor 12b of the foot keyboard 12. The presence / absence of function may be controlled. That is, when the after touch value is equal to or greater than a predetermined threshold, the function by the depression operation of the function control pedal is exhibited, and when the after touch value is less than the threshold, the function by the depression operation of the function control pedal is exhibited. It may not be done. The threshold value of the after touch value may be set arbitrarily. In this case, what is necessary is just to change the determination process of FIG.3 S21, S32 to the process by the comparison with an aftertouch value and a threshold value. That is, the determination process of step S21 in FIG. 3 is changed to a process of determining whether the aftertouch value is equal to or greater than a threshold value. Also, the determination process in step S32 in FIG. 3 is changed to a process for determining whether the aftertouch value is smaller than the threshold value. And it is good to enable it to change a threshold value arbitrarily by the process of step S14 of FIG. According to this, at the time of a desired operation of the keys of the foot keyboard 12 for the performer, the change control of the tone signal generation mode (the tone signal generation mode by the function control pedal such as the damper pedal, the sostenuto pedal, the soft pedal) is performed. As a result, it becomes easier for the performer to perform using a specific key on the foot keyboard 12.

  In the above embodiment, the decay time Td of the musical sound signal is variably controlled using the aftertouch value. However, a fixed value may be adopted as the decay time Td regardless of the aftertouch value. In this case, the determination process in step S23 of FIG. 3 is omitted, and when the determination is “Yes” in step S22, the damper value DMP is set to the maximum value MAX or a predetermined value different from the maximum value MAX in step S25. It is good to. In this case, the processes in steps S29 and S30 are also unnecessary. Further, in this case, the predetermined value may be set to an arbitrary value by the process of step S14 in FIG.

  Moreover, in the said embodiment, the example in which the foot keyboard 12 was integrated in the electronic musical instrument was demonstrated. However, the present invention is not limited to this, and the foot keyboard 12 may be separated from the electronic musical instrument main body, and both may be connected by wire or wirelessly. In this case, a function by depressing a function control pedal such as a damper pedal, a sostenuto pedal, or a soft pedal is assigned on the foot keyboard 12 side, and data output from the foot keyboard 12 is necessary for the function control pedal function. It may be data. Alternatively, the foot keyboard 12 side outputs a normal note number and aftertouch value, and the electronic musical instrument side generates data necessary for the function control pedal function based on the received note number and aftertouch value. May be.

  In the above embodiment, a plurality of aftertouch sensors 12b respectively corresponding to a plurality of keys are provided in the foot keyboard 12. However, instead of this, one aftertouch sensor common to a plurality of keys may be provided in the foot keyboard 12. In this case, the after touch sensor may output a signal representing the largest key pressing depth or key pressing strength among one or a plurality of keys pressed. In the processing of steps S24, S30, and S31 in FIG. 3, the aftertouch value from the one aftertouch sensor may be used.

  Furthermore, the present invention is also applied to the foot keyboard 12 that does not include the after touch sensor 12b. In this case, in the above-described embodiment, the same processing as when the damper half DHF is “0” may be executed. Specifically, in FIG. 3, the processes of steps S23, S24, and S27 to S31 may be omitted.

1 is an overall block diagram of an electronic musical instrument according to an embodiment of the present invention. It is a flowchart which shows the main program performed with the electronic musical instrument of FIG. It is a flowchart which shows the detail of the foot keyboard processing routine of FIG. It is a figure which shows an example of the envelope waveform of a musical sound signal. It is a graph which shows the change characteristic of a damper value with respect to an after touch value.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Hand keyboard, 12 ... Foot keyboard, 12b ... After touch sensor, 13 ... Setting operation group, 15 ... Sound source circuit, 30 ... Computer part, 41 ... External storage device

Claims (4)

An electronic musical instrument comprising a plurality of performance operators operated by the performer's feet, and having at least a performance keyboard as a performance operation means for controlling generation of musical sound signals having pitches assigned to the operated performance operators. In
Detecting means for detecting that a predetermined performance operator, which is predetermined or designated by a performer among the plurality of performance operators, is operated;
When the detection means detects that the predetermined performance operator is operated, the musical sound signal generated by the performance of the performer is expressed as a musical sound when the predetermined performance operator is not operated. An electronic musical instrument comprising change control means for performing change control as compared with a signal generation mode. The electronic musical instrument according to claim 1,
The foot keyboard device includes an after touch sensor that detects depth or strength when the plurality of performance operators are operated,
The electronic musical instrument characterized in that the change control means also has a function of controlling the degree of change in the generation mode of the tone signal to be changed according to the detection value by the after touch sensor. The electronic musical instrument according to claim 1,
The foot keyboard device includes an after touch sensor that detects depth or strength when the plurality of performance operators are operated,
The change control means executes the change of the tone signal generation mode when the detection value by the after-touch sensor exceeds a predetermined value, and the change control unit executes the tone signal generation mode when the detection value does not exceed the predetermined value. Do not make any changes,
An electronic musical instrument comprising a change setting means for changing and setting the predetermined value. An electronic musical instrument comprising a plurality of performance operators operated by the performer's feet, and having at least a performance keyboard as a performance operation means for controlling generation of musical sound signals having pitches assigned to the operated performance operators. Applies to
On the computer,
A detection procedure for detecting that a predetermined performance operator that is predetermined or designated by a performer among the plurality of performance operators is operated;
When it is detected that the predetermined performance operator is operated by the detection procedure, the generation manner of the musical sound signal that is controlled to be generated by the performance of the performer is determined when the predetermined performance operator is not operated. A program for executing a change control procedure for performing change control in comparison with the generation mode of the musical tone signal.

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