JP4645285B2 - Electronic musical instruments - Google Patents

Description

  The present invention relates to an electronic musical instrument that eliminates restrictions on the number of sounds that can be played at the same time with both hands and the restriction of a sound range, and allows a wide range of chords to be played with many sounds.

  Conventionally, electronic musical instruments with an automatic harmony function that automatically generates a harmony sound that matches the chord being played and adds it to the melody sound to add thickness to the performance are known. A kind of electronic musical instrument is disclosed in Patent Document 1, for example.

JP 2000-206967 A

By the way, in the electronic musical instrument disclosed in Patent Document 1, it is possible to generate a plurality of sounds by pressing a single key, but it is not possible to freely select a sound other than the actual playing sound among the plurality of sounds. The number of notes to be played and the range of the notes are limited to a range that can be simultaneously pressed with ten fingers of the performer. In other words, there is a problem that the number of notes that can be played at once with both hands and the restriction on the range are eliminated, and a wide range of chords cannot be played with a large number of sounds.
Accordingly, the present invention has been made in view of such circumstances, and provides an electronic musical instrument that can perform chord performances in a wide range with a large number of sounds, eliminating the restrictions on the number of notes that can be played with both hands and the range. The purpose is that.

In order to achieve the above object, according to the first aspect of the present invention, in an electronic musical instrument that generates a sound of a key that has been pressed on a keyboard and silences the sound of the key that has been released, the transition from an off state to an on state Without registering the sound of the key that was pressed between the time the pedal is turned on and the time the pedal is turned off after the registered pedal is turned on. A key-pressing sound registering means for registering in the storage means as a key-pressing sound, and a key-pressing sound registered in the storage means by the key-pressing sound registration means in synchronism with a pedal-off operation of the registration pedal, that the depressed key after the Pedaruofu operation; and a sound control means for muffling the depressed tone registered in the storage unit by the depressed key tone registration unit in synchronism with the timing of key release And butterflies.

According to the second aspect of the present invention, in the electronic musical instrument that generates the sound of the key pressed on the keyboard and silences the sound of the key released, the pedal on operation and the on state that transition from the off state to the on state are performed. Registered pedal and playback pedal that perform pedal-off operation that transitions to the off state, and a key-pressing sound without sounding the key that was pressed between the time that the registered pedal is pedal-oned and the time that the pedal is turned off A key-pressing sound registering means for registering in the memory means, and a key-pressing sound registered in the memory means by the key-pressing sound registration means in synchronism with a pedal-on operation of the playback pedal, and after a pedal-off operation of the registered pedal It is characterized in that the depressed key is and a sound control means for muffling the depressed tone registered in the storage unit by the depressed key tone registration unit in synchronism with the timing of key release .

According to the first aspect of the present invention, the key-pressed sound is registered in the storage means as the key-pressing sound without generating the sound of the key pressed between the time when the registration pedal is operated to be turned on and the time when the pedal is turned off. The key- press sound registered in the storage means is generated in synchronization with the pedal-off operation of the registration pedal, and is registered in the storage means in synchronization with the timing at which the key pressed after the pedal-off operation of the registration pedal is released. Since the key-pressing sound that has been played is muted, it is possible to perform chord performances in a wide range with a large number of sounds, eliminating restrictions on the number of notes that can be played with both hands and the range.

According to the second aspect of the present invention, the sound of the key pressed during the period from when the registration pedal is operated to pedal-on until when the pedal is operated is registered in the storage means as a key-pressing sound. The key pressing sound registered in the storage means is generated in synchronization with the pedal-on operation of the playback pedal, and the key pressed after the pedal-off operation of the registration pedal is registered in the storage means in synchronization with the timing at which the key is released. Since the key-pressing sound that has been played is muted, it is possible to perform chord performances in a wide range with a large number of sounds, eliminating restrictions on the number of notes that can be played with both hands and the range.

Embodiments of the present invention will be described below with reference to the drawings.
A. Configuration FIG. 1 is a block diagram showing an overall configuration of an electronic musical instrument according to an embodiment of the present invention. In this figure, the keyboard 1 generates performance information such as a key-on / key-off event, a key number, and velocity in response to a key release operation. The pedal unit 2 includes a sostenuto pedal 2a, a soft pedal 2b, and a damper pedal 2c, which respectively generate a pedal-on signal in response to a pedal-on operation that depresses the pedal and generate a pedal-off signal in response to a pedal-off operation that releases the pedal. In the pedal unit 2, different functions are assigned to the sostenuto pedal 2a and the soft pedal 2b in accordance with the operation of a mode switch arranged in the operation unit 3 described later.

  Specifically, when the normal mode is set by operating the mode switch, both the sostenuto pedal 2a and the soft pedal 2b function as original pedals. That is, the sostenuto pedal 2a provides a sostenuto effect that keeps only the sound that is being generated when the pedal is depressed until the pedal is released even after the key is released. The soft pedal 2b provides a soft effect that lowers the velocity of the musical sound that is generated when the pedal is depressed.

  On the other hand, when the function mode is set by operating the mode switch, the sostenuto pedal 2a functions as a “playback pedal” described later, and the soft pedal 2b functions as a “registered pedal” described later. The damper pedal 2c always plays the original function regardless of the “normal mode” or “functional mode” set according to the on / off operation of the mode switch, that is, all the sounds that are sounding according to the pedal depression. It functions as a pedal to give a sustained sustain effect.

  The operation unit 3 includes various switches arranged on the operation panel such as a power switch and a tone color selection switch in addition to the mode switch described above, and generates a switch event corresponding to the type of switch to be operated. The display unit 4 is composed of an LCD panel or the like, and displays a setting state and an operation state of each part of the musical instrument in accordance with a display control signal supplied from a CPU 5 described later. The CPU 5 controls the setting state of each part of the musical instrument based on the switch event generated by the operation unit 3, or the musical tone parameter (for example, according to the performance information supplied from the keyboard 1 and the pedal on / off signal supplied from the pedal unit 2). , A sound generation instruction command, a mute instruction command, etc.) are generated and sent to the sound source 8. Details of the characteristic processing operation of the CPU 5 according to the gist of the present invention will be described later.

  The ROM 6 stores various control programs executed by the CPU 5 and control data. The various control programs stored in the ROM 6 include a main routine, a switch process, a pedal process, a keyboard process, and a tone generation control process which will be described later. The RAM 7 is used as a work area for the CPU 5 and temporarily stores various register / flag data. The sound source 8 is configured by a waveform memory reading method, and forms and outputs a musical sound corresponding to a musical sound parameter supplied from the CPU 5. The sound system 9 performs filtering for noise removal on the output of the sound source 8, and then amplifies the output and emits the sound from the speaker.

B. Operation Next, the operation of the embodiment having the above-described configuration will be described with reference to FIGS. In the following, the operation of the main routine will be described first as a schematic operation, and then each operation of switch processing, pedal processing, keyboard processing, and sound generation control processing called from the main routine will be described in order.

(1) Operation of main routine When power is turned on in the embodiment having the above configuration, the CPU 5 executes the main routine shown in FIG. 2 and proceeds to step SA1 to reset various registers and flags provided in the RAM 7. Alternatively, initialization is performed or initialization is performed to instruct the sound source 8 to perform initialization. Next, in step SA2, a switch process such as inversion of the mode flag MR and alternately setting "normal mode (MR = 0)" or "functional mode (MR = 1)" every time the mode switch is turned on is executed. To do.

  Next, in step SA3, pedal processing including sostenuto pedal processing and soft pedal processing is executed. When the function mode is set by operating the mode switch, in the sostenuto pedal process, the flag PR is set to “1” according to the pedal-on operation of the playback pedal that is also used as the sostenuto pedal 2a, and the pedal-on state of the playback pedal is set. In addition, the flag DONF is set to “1” to generate a reproduction start instruction for the key-pressing sound registered in the register. On the other hand, the flag PR is reset to zero in accordance with the pedal-off operation of the playback pedal, indicating the pedal-off state of the playback pedal.

  In the soft pedal processing under the function mode, if the registration pedal that is also used as the soft pedal 2b is depressed and the pedal is turned on, the flag NR is set to “1” if the playback pedal (sostenuto pedal 2a) is in the pedal off state. Set to indicate the pedal-on state of the registered pedal and prepare for registering the keystroke sound. Then, in response to the pedal-off operation of the registered pedal, the flag NR is reset to zero to indicate the pedal-off state of the registered pedal, and then the flag DONF is set to “1” and an instruction to start playing the key-press sound registered in the register is generated. To do.

  Next, in step SA4, keyboard processing is executed. In the keyboard process, when the registration pedal is set to the pedal-on state, the key press sound is registered in the register when the key is pressed. That is, the key number k of the pressed key is recorded in the register NOTE, and the velocity VEL is recorded in the register VEL. On the other hand, when the key is released, the flag OFTF (k) corresponding to the key number k of the released key is reset to zero.

  Subsequently, in step SA5, a sound generation control process is executed. In the sound generation control process, when a key is pressed, a note-on event created based on the key number k and the velocity VEL of the pressed key is sent to the sound source 8 to instruct sound generation, while the pedal-off operation of the registration pedal (soft pedal 2b) is performed. Alternatively, if a playback start instruction is generated by a pedal-on operation of the playback pedal (sostenuto pedal 2a), the sound source 8 is instructed to generate a key-pressing sound registered in the register. Then, the instruction to stop the reproduction of all the key-pressing sounds registered in the register or the pedal-off operation of the reproduction pedal (sostenuto pedal 2a) is generated. In addition, when a key is released, a note-off event for canceling a musical tone having a pitch corresponding to the key number k of the key that has been released is created and transmitted to the sound source 8 to be instructed to mute, while a playback stop instruction has been generated. For example, the sound source 8 is instructed to mute the key-pressing sound registered in the register in a manner that is synchronized with the muting of the generated key-pressing sound.

  Thereafter, the process proceeds to step SA6, and other processes such as changing parameter settings in accordance with the switch operation of the operation unit 3 are executed. Thereafter, until the power is turned off, the CPU 5 repeatedly executes the processes in steps SA1 to SA6 described above.

(2) Operation of Switch Processing Next, the operation of switch processing will be described with reference to FIG. When this process is executed through step SA2 (see FIG. 2) of the main routine described above, the CPU 5 proceeds to step SB1 shown in FIG. Judging. If the mode switch is not turned on, the determination result here is “NO”, and other switch processing is executed via step SB5, and this processing ends. Note that the other switch processing in step SB5 refers to processing such as setting a timbre according to the operation of the timbre selection switch, for example.

  On the other hand, when the mode switch is turned on, the determination result in step SB1 is “YES”, the process proceeds to step SB2, and the mode flag MR is inverted. The mode flag MR represents a normal mode when “0” and a function mode when “1”. As described above, the normal mode refers to an operation mode in which both the sostenuto pedal 2a and the soft pedal 2b function as original pedals. On the other hand, the functional mode refers to causing the sostenuto pedal 2a to function as a “playback pedal” described later. The operation mode in which the soft pedal 2b functions as a “registered pedal” to be described later.

  Next, in step SB3, it is determined whether or not the inverted mode flag MR is “0”, that is, whether or not the setting has been changed from the function mode to the normal mode. When the setting is changed from the normal mode to the function mode, the determination result is “NO”, and after performing other switch processing via step SB5, this processing is completed. On the other hand, when the setting is changed from the function mode to the normal mode, the determination result in step SB3 is “YES”, which is provided in the RAM 7 and temporarily stores the key number k of the pressed key. After clearing the register VEL for temporarily storing the velocity, other switch processing is performed via step SB5, and then this processing is completed.

  As described above, in the switch processing, every time the mode switch is turned on, the mode flag MR is inverted to alternately set the “normal mode (MR = 0)” or “functional mode (MR = 1)”. When the setting is changed from “functional mode (MR = 1)” to “normal mode (MR = 0)”, the registers NOTE and VEL used in “functional mode” are cleared.

(3) Pedal Process Operation Next, the pedal process operation will be described with reference to FIGS. When this process is executed via step SA3 (see FIG. 2) of the main routine described above, the CPU 5 executes the sostenuto pedal process via step SC1 shown in FIG. 4 and then the soft pedal via step SC2. Execute the process. Hereinafter, each operation of the sostenuto pedal process and the soft pedal process will be described.

a. Operation of Sostenuto Pedal Processing When the sostenuto pedal processing is executed via step SC1 shown in FIG. 4, the CPU 5 proceeds to step SD1 shown in FIG. 5, and the mode flag MR is “1”, that is, the function mode It is determined whether or not. If the mode flag MR is in the normal mode of “0”, the determination result here is “NO”, the process proceeds to step SD2, and only the original processing of the sostenuto pedal 2a, that is, the sound that is sounding when the pedal is depressed Executes a process for giving a sostenuto effect that is sustained until the pedal is released even after the key is released.

  On the other hand, if the mode flag MR is in the function mode “1”, the determination result in step SD1 is “YES”, and step SD3 and subsequent steps are executed. In steps SD3 to SD4, the pedal operating state of the sostenuto pedal 2a that functions as a “playback pedal” in the function mode is determined. Hereinafter, the operation description will be made with the sostenuto pedal 2a referred to as a reproduction pedal.

If the playback pedal is not operated, the determination results in steps SD3 and SD4 are “NO”, and the present process ends without performing anything. When the playback pedal is depressed and a pedal-on operation is performed to make a transition from the pedal-off state to the pedal-on state, the determination result in step SD3 is “YES”, the process proceeds to step SD5, and “1” is set in the flag PR. Next, in step SD6, the flag DONF is set to “1” to generate a reproduction start instruction for the key-press sound registered in the register, and the process ends.
On the other hand, when the playback pedal is released and a pedal-off operation is performed to make a transition from the pedal-on state to the pedal-off state, the determination result in step SD4 becomes “YES”, and the process proceeds to step SD7. Finish.

  As described above, in the sostenuto pedal process, a sostenuto effect is applied in which the original process of the sostenuto pedal 2a in the normal mode, that is, only the sound that is sounding when the pedal is depressed is maintained until the pedal is released even after the key is released. On the other hand, in the function mode, in response to the pedal-on operation of the playback pedal (sostenuto pedal 2a), the flag PR is set to “1” and a playback start instruction for the key-press sound registered in the register is generated. The flag PR is reset to zero in response to the pedal-off operation.

b. Operation of Soft Pedal Process When the soft pedal process is executed via step SC2 shown in FIG. 4, the CPU 5 advances the process to step SE1 shown in FIG. 6, and the mode flag MR is “1”, that is, the function mode is set. Determine whether it is set. If the mode flag MR is in the normal mode of “0”, the determination result here is “NO”, and the process proceeds to step SE2. In step SE2, an original process of the soft pedal 2b, that is, a process of applying a soft effect that lowers the velocity of the tone to be generated while the soft pedal 2b is depressed is executed.

  On the other hand, if the mode flag MR is set to the function mode “1”, the determination result in step SE1 is “YES”, and step SE3 and subsequent steps are executed. In steps SE3 to SE4, a pedal operation state of the soft pedal 2b that functions as a “registered pedal” in the function mode is determined. Hereinafter, the operation of the soft pedal 2b will be referred to as a registered pedal and the description of the operation will proceed. First, when the registration pedal is not operated, the determination results of the above steps SE3 and SE4 are “NO”, and the present process is finished without performing anything.

When the registered pedal is depressed and a pedal-on operation is performed to transition from the pedal-off state to the pedal-on state, the determination result in step SE3 is “YES”, and the flow proceeds to step SE5. In step SE5, it is determined whether or not the flag PR is “0”, that is, whether or not the playback pedal (sostenuto pedal 2a) is in the pedal-off state. Here, if the playback pedal is in the pedal-on state (flag PR = 1), the determination result is “NO”, and this process is completed. Therefore, reproduction pedal side if Pedaruo down state, disabling the pedal ON operation of the registration pedal.

  On the other hand, if the playback pedal is in the pedal-off state, the determination result in step SE5 is “YES”, the process proceeds to step SE6, and the flag NR is set to “1” to indicate the pedal-on state of the registered pedal. Next, in step SE7, the contents of the registers NOTE and VEL are cleared and the address AD is initialized to the start address. In steps SE8 to SE9, an all-note-off event is created, sent to the sound source 8, and the process ends.

  The processing in steps SE7 to SE9 has the following background. In the keyboard processing (see FIG. 7) described later, when the registered pedal is set to the pedal-on state (flag NR = 1), the key number k of the key that has been pressed is stored in the register NOTE (AD) and the velocity VEL is set. It is registered (recorded) in the register VEL (AD). As a preparation for this, in step SE7, the contents of the registers NOTE and VEL are cleared to zero, while the address AD is initialized to the start address. Further, in order to prevent the key-press sound registered in response to the pedal-on operation of the registered pedal from being generated, an all-note-off event for instructing mute all sounds is created and sent to the sound source 8 in steps SE8 to SE9. Yes.

  When the registered pedal is released and a pedal-off operation is performed to transition from the pedal-on state to the pedal-off state, the determination result in step SE4 is “YES”, and the flow proceeds to step SE10. In step SE10, the flag NR is reset to zero to indicate the pedal off state of the registered pedal. In step SE11, the flag DONF is set to “1” to generate a reproduction start instruction for the key-press sound registered in the register, and the process ends.

In this way, the soft pedal process provides a soft effect that lowers the velocity of the musical sound to be generated in the normal mode, that is, the original process of the soft pedal 2b, that is, the soft pedal 2b is depressed.
On the other hand, when the registration pedal, which is also used as the soft pedal 2b, is depressed and the pedal is turned on in the function mode, if the playback pedal is in the pedal off state, the flag NR is set to “1” and the pedal is in the pedal on state. And prepare for registering the keystroke sound. When the registered pedal is released and the pedal is in the off state, the flag NR is reset to zero to indicate the pedal off state of the registered pedal, and then the flag DONF is set to “1” to start playing the keypress sound registered in the register. Is generated.

(4) Keyboard Processing Operation Next, the keyboard processing operation will be described with reference to FIG. When this processing is executed via step SA4 (see FIG. 2) of the main routine described above, the CPU 5 proceeds to step SF1 shown in FIG. 7 and performs key scanning for detecting a key change of the keyboard 1. Next, in step SF2, it is determined whether the key change obtained by the key scanning is “no event (no key change)”, “key on”, or “key off”. Hereinafter, the operation will be described separately for each case.

<When the key change is "No event (no key change)">
In this case, the process proceeds to step SF10, and it is determined whether or not key scanning has been completed for all keys of the keyboard 1. If the key scanning has not been completed, the determination result is “NO”, and the process returns to step SF1 described above. On the other hand, when the key scanning is completed for all the keys, the determination result is “YES”, and the present process is finished.

<When the key change is “key on (event)” according to the key press operation>
In this case, the process proceeds to step SF3, where the key number of the depressed key is stored in the register k, and in the subsequent step SF4, the velocity is stored in the register VEL. Next, in step SF5, “1” is set to the flag ONTF (k) corresponding to the key number stored in the register k (hereinafter referred to as key number k). In step SF6, it is determined whether the flag NR is “1”, that is, whether the registered pedal is set to the pedal-on state.

  If the registered pedal is in the pedal-off state, the determination result is “NO”, and the flow proceeds to step SF10 described above. On the other hand, if the registered pedal is in the pedal-on state, the determination result in step SF6 is “YES”, and the process proceeds to step SF7. In step SF7, the key number k and the velocity VEL are stored in the register NOTE (AD) and the register VEL (AD) specified by the address AD, respectively, and in the subsequent step SF8, the address AD is incremented and stepped. Then, the process proceeds to step SF9, after the flag ONTF (k) corresponding to the key number k is reset to zero, the process proceeds to step SF10.

<When the key change is “key-off (event)” according to the key release operation>
In this case, the process proceeds to step SF11, where the key number of the released key is stored in the register k, and in the subsequent step SF12, “1” is set to the flag OFTF (k) corresponding to the key number k. In step SF13, it is determined whether the flag NR is “1”, that is, whether the registered pedal is set to the pedal-on state. If the registered pedal is in the pedal-off state, the determination result is “NO”, and the flow proceeds to step SF10 described above. On the other hand, if the registered pedal is in the pedal-on state, the determination result in step SF13 is “YES”. After the flag OFTF (k) corresponding to the key number k is reset to zero, the process proceeds to step SF10 described above.

(5) Operation of Sound Generation Control Process Next, the operation of the sound generation control process will be described with reference to FIGS. When this process is executed via step SA5 (see FIG. 2) of the main routine described above, the CPU 5 advances the process to step SG1 shown in FIG. In step SG1, the key number initial value is stored in the register k. The initial key number means the key number of the lowest pitch key on the keyboard 1. Next, in step SG2, it is determined whether or not the flag ONTF (k) is “1”, that is, the key of the key number k is pressed.

  If the key with the key number k is not depressed, the determination result is “NO”, and the flow proceeds to step SG10. In step SG10, it is determined whether or not the flag OFTF (k) is “1”, that is, the key with the key number k has been released. If the key with the key number k has not been released, the determination result is “NO”, the process proceeds to step SG8, and the key number k is incremented and stepped. Subsequently, in step SG9, whether or not the stepped key number k exceeds the key number final value, that is, the lowest pitch key (key number initial value) of the keyboard 1 to the highest pitch key (key number final value). It is determined whether or not the key that has been pressed or released has been searched up to (value). If the search has not been completed, the determination result is “NO”, and the process returns to step SG2.

  Thereafter, steps SG2, SG10, SG8, and SG9 described above are repeated until the stepped key number k reaches the key value final value to search for a key that has been pressed or released. In the following, in the process of searching for a key that has been pressed or released in this manner, the operation in each case will be described, divided into a case where a key that has been pressed is searched and a case where a key that has been released is searched.

<When searching for a pressed key>
In this case, since the flag ONTF (k) corresponding to the key number k of the key that has been pressed is “1”, the determination result of step SG2 is “YES”, and the process proceeds to step SG3. In step SG3, “1” is set to the ON flag ONF (k) designated by the key number k of the pressed key.

  In steps SG4 to SG5, a note-on event is generated based on the key number k and the velocity VEL of the key that has been pressed, and this is transmitted to the sound source 8 as a sound generation instruction command. As a result, the sound source 8 generates a musical tone having a pitch corresponding to the key number k of the pressed key at a volume corresponding to the velocity VEL. Next, in step SG6, the key number k of the generated key pressing sound is held in the register KD, and in step SG7, the flag ONTF (k) designated by the key number k of the generated key pressing sound is reset to zero. To do.

  Thereafter, steps SG8 to SG9 described above are executed. When the incremented key number k exceeds the key final number, the determination result in step SG9 is “YES”, and the process proceeds to step SG16 illustrated in FIG. In step SG16, flag DONF is “1”, that is, whether or not there is a reproduction start instruction generated by the pedal-off operation of the registration pedal (soft pedal 2b) or a reproduction start instruction generated by the pedal-on operation of the reproduction pedal (sostenuto pedal 2a). Judging.

  If there is no reproduction start instruction, the determination result here is “NO”, the process proceeds to step SG26, and a flag DOFF is set to “1” to generate a reproduction stop instruction. On the other hand, if there is a reproduction start instruction, the determination result in step SG16 is “YES”, and the flow proceeds to step SG17. In steps SG17 to SG23, the key number k and the velocity VEL of the keypress sound registered in the register are read from the register NOTE (AD) and the register VEL (AD), respectively, while the address AD is incremented from the start address. Based on the key number k and the velocity VEL, a note-on event of the key-press sound registered in the register is created and sent to the sound source 8. As a result, the sound source 8 reproduces the key pressing sound registered in the register.

  In this way, if there is no data (key number k) to be read from the register NOTE (AD) in accordance with the stepped address AD in the process of reproducing the key-press sound registered in the register, the determination result in step SG18 becomes “NO”. The process proceeds to step SG24. In step SG24, it is determined whether or not the flag PR is “0”, that is, whether or not the playback pedal (sostenuto pedal 2a) is in the pedal-off state. If the playback pedal is not in the pedal-off state, the determination result is “NO”, the process proceeds to step SG26, the flag DOFF is set to “1”, and a playback stop instruction is generated.

  On the other hand, if the playback pedal is in the pedal-off state, the determination result in step SG24 is “YES”, the process proceeds to step SG25, the flag DONF is reset to zero, the process proceeds to step SG26, and the flag DOFF is set to “1”. Then, after the reproduction stop instruction is generated, this process is once completed.

<Operation when a released key is searched>
In this case, since the flag OFTF (k) corresponding to the key number k of the key that has been released becomes “1”, the determination result in the above-described step SG10 (see FIG. 8) becomes “YES”, and the process proceeds to step SG11. move on. In step SG11, the flag ONF (k) designated by the key number k is reset to zero. In step SG12, a note-off event for muting the musical tone of the pitch corresponding to the key number k of the key that has been released is created. In step SG13, the created note-off event is sent to the sound source 8 as a mute instruction command. Send it out. As a result, the tone generator 8 mutes the musical tone having the pitch corresponding to the key number k of the key that has been released.

  Next, in step SG14, the flag OFTF (k) designated by the key number k is reset to zero with the completion of the mute instruction. Next, in step SG15, it is determined whether or not the flag DOFF is “1”, that is, whether or not the reproduction stop of the keypress sound registered in the register is instructed. If the reproduction stop instruction has not been issued, the determination result is “NO”, and the process proceeds to step SG8 described above.

On the other hand, if a reproduction stop instruction has been issued, the determination result in step SG15 is “YES”, and the process proceeds to step SG27 shown in FIG. In step SG27, the key number k stored in the register KD in step SG6 described above (the key number k of the generated key press sound) matches the key number k of the released key, that is , the key press most recently. It is determined whether or not the released key has been released . If the key is not released, the determination result here is “NO”, and the process proceeds to step SG8 shown in FIG. 8 to increment the key number k.

On the other hand, if the key that has been pressed is released, the determination result in step SG27 is “YES”, and the flow proceeds to step SG28. In steps SG28 to SG33, the key number k of the keypress sound registered in the register is read from the register NOTE (AD) while the address AD is incremented from the start address, and a note-off event created based on the read key number k is generated as a sound source. Send to 8. As a result, the key-pressing sound registered in the register is muted in synchronization with the muting of the generated key-pressing sound.

  In this way, when there is no data (key number k) to be read from the register NOTE (AD) in accordance with the stepped address AD in the process of muting the registered key pressing sound, the determination result in step SG29 is “NO”. The process proceeds to step SG34. Then, in steps SG34 to SG35, both the register KD and the flag DOFF are reset to zero, and this process ends.

  As described above, in the sound generation control process, when a key is pressed, a note-on event created based on the key number k and the velocity VEL of the pressed key is sent to the sound source 8 to instruct sound generation, while a registration pedal (soft pedal) If a playback start instruction is generated by the pedal-off operation of 2b) or the pedal-on operation of the playback pedal (sostenuto pedal 2a), the sound source 8 is instructed to generate a key-pressing sound registered in the register. Then, the instruction to stop the reproduction of all the key-pressing sounds registered in the register or the pedal-off operation of the reproduction pedal (sostenuto pedal 2a) is generated. In addition, when a key is released, a note-off event for canceling a musical tone having a pitch corresponding to the key number k of the key that has been released is created and transmitted to the sound source 8 to be instructed to mute, while a playback stop instruction has been generated. For example, the sound source 8 is instructed to mute the key-pressing sound registered in the register in a manner that is synchronized with the muting of the generated key-pressing sound.

(6) Specific Operation Example Next, an example of a specific operation under the function mode will be described with reference to FIGS. FIG. 11A shows an example of a musical score played using a registration pedal (soft pedal 2b). In the musical score shown in this figure, it is considered musically preferable that an arpeggio sound preceding each of the chords A to D is performed simultaneously as a constituent sound of the subsequent chord. However, the sound range is too wide for simultaneous performance, and there are places where the number of sounds exceeds 10 fingers in both hands, making it impossible to perform alone.

  Therefore, when playing the arpeggio sounds preceding the chords A to D, the registration pedal (soft pedal 2b) is turned on and off at the timing shown in the figure. For example, when playing three arpeggio sounds preceding chord A, first, the registration pedal (soft pedal 2b) is turned on to play three arpeggio sounds at timing t1.

  Then, since the flag ONTF is set to “0” in response to the pedal-on operation of the registration pedal, the pressed three arpeggio sounds are not registered and registered in the register. Then, at the timing t2 at which the chord A is played, the registered pedal is turned off to play the constituent sounds of the chord A. As described above, when the registered pedal is turned off, the keypress sound registered in the register is generated, and the keypress sound registered in the register is muted in synchronization with the sound of the released key.

Therefore, when each constituent sound of the chord A is pressed, each constituent sound of the pressed chord A is generated, and three arpeggio sounds registered in the register are sequentially generated. When each constituent sound of the chord A is released, each constituent sound of the released chord A is muted and synchronized with the timing at which the latest depressed key is released. The three arpeggio sounds registered in the form are muted sequentially. As a result, as described in the score of FIG. 11B, the chord A including three arpeggio sounds is played simultaneously.

  Similarly to the chord A described above for the chords B to D in the score of FIG. 11 (a), when the preceding arpeggio sound is played, the registration pedal is turned on and off at the timing shown in the figure. Since the arpeggio sounds registered in the register are played back in synchronization with the chord performance, it is possible to perform chord performances in a wide range with a large number of sounds, eliminating restrictions on the number of notes that can be played with both hands and the range. .

  Next, FIG. 12A is an example of a musical score that is played using a registration pedal (soft pedal 2b) and a playback pedal (sostenuto pedal 2a) together. In this example, when playing an arpeggio sound common to the chords A to C, the registration pedal (soft pedal 2b) is turned on and off as shown in the figure.

  Then, as in the example shown in FIG. 11, the flag ONTF is set to “0” in response to the pedal-on operation of the registered pedal at the timing t1, so that the four arpeggio sounds pressed are not generated and are registered. be registered. Then, at the timing t2 when the chord A is played, when the registered pedal is turned off and each constituent sound of the chord A is pressed, the constituent sounds of the pressed chord A and the register are registered by the pedal off operation of the registered pedal. The four arpeggio sounds are played simultaneously. As a result, as indicated by the score of FIG. 12B, the chord A including four arpeggio sounds is played simultaneously.

Then, the playback pedal (sostenuto pedal 2a) is turned on at timing t3 after playing the chord A, and the playback pedal is turned off at timing t4 after playing the chord C. As described above, when the playback pedal is set to the pedal-on state, the keypress sound registered in the register is generated together with the sound of the key pressed, and the key press registered in the register is synchronized with the sound of the key released. Key sounds are muted.

Therefore, when each constituent sound of the chord B is pressed, each constituent sound of the pressed chord B is generated, and four arpeggio sounds registered in the register are generated. When each constituent sound of the chord B is released, each constituent sound of the released chord B is muted and synchronized with the timing at which the latest depressed key is released. The four arpeggio sounds registered in the form are muted.

  As a result, as shown in the score of FIG. 12B, the chord B including four arpeggio sounds is played at the same time. This makes it possible to perform chords with a wide range of notes. The chord C is the same as that described for the chord B described above. Furthermore, the chord D is the same case as the chord A.

  As described above, in this embodiment, in response to the pedal-on operation of the registered pedal, the registered key is not registered and the registered pedal is operated to turn off, or the playback pedal is turned on. When set to the state, the keypress sound registered in the register is sounded, and the keypress sound registered in the register is silenced in synchronization with the sound of the released key. This eliminates the restrictions and makes it possible to perform a wide range of chords with a large number of sounds.

It is a block diagram which shows the structure of embodiment by this invention. It is a flowchart which shows operation | movement of a main routine. It is a flowchart which shows the operation | movement of a switch process. It is a flowchart which shows operation | movement of a pedal process. It is a flowchart which shows the operation | movement of a sostenuto pedal process. It is a flowchart which shows operation | movement of a soft pedal process. It is a flowchart which shows the operation | movement of a keyboard process. It is a flowchart which shows the operation | movement of a sound generation control process. It is a flowchart which shows the operation | movement of a sound generation control process. It is a flowchart which shows the operation | movement of a sound generation control process. It is a figure which shows the score example for demonstrating a specific operation | movement. It is a figure which shows the score example for demonstrating a specific operation | movement.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Keyboard 2 Pedal part 2a Sostenuto pedal 2b Soft pedal 2c Damper pedal 3 Operation part 4 Display part 5 CPU
6 ROM
7 RAM
8 Sound source 9 Sound system

Claims (2)

In an electronic musical instrument that emits the sound of a pressed key on the keyboard and silences the sound of the released key,

A registered pedal that performs a pedal-on operation that transitions from an off state to an on state or a pedal-off operation that transitions from an on state to an off state, and a key that is pressed between the time when the registered pedal is pedal-oned and the time when the pedal is turned off A key-pressing sound registration means for registering in the storage means as a key-pressing sound without generating a sound of the key, and a key-pressing sound registered in the storage means by the key-pressing sound registration means in synchronization with a pedal-off operation of the registration pedal. A sound generation control means for causing the keypress sound registered in the storage means to be silenced by the keypress sound registration means in synchronism with the timing at which the key pressed after the pedal-off operation of the registration pedal is released. An electronic musical instrument characterized by comprising. In an electronic musical instrument that emits the sound of a pressed key on the keyboard and silences the sound of the released key,

A registered pedal and a playback pedal that perform a pedal-on operation that transitions from an off state to an on-state and a pedal-off operation that transitions from an on-state to an off-state, and a key press between the registered pedal and the pedal-off operation A key-pressing sound registering means for registering in the storage means as a key-pressing sound without generating a sound of the generated key; and a key-pressing sound registered in the storage means by the key-pressing sound registration means in synchronization with the pedal-on operation of the playback pedal. Sound generation control for generating a key sound and for canceling the key pressing sound registered in the storage means by the key pressing sound registration means in synchronization with the timing at which the key pressed after the pedal-off operation of the registration pedal is released And an electronic musical instrument.

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