JPH11167381A - Musical tone controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to change the timbre of musical tones under sound production without hindrance. SOLUTION: When a note on is instructed, a main CPU 1 acquires a note number from note on information and acquires the instrument number of the instrument allocated to the note number. This instrument number is written into the column of the corresponding note number of a note sound production table and a sound production instruction is made to a sound source CPU 7. When a note off is next instructed, the main CPU 1 acquires the instrument number at the time of the note on by referencing the note sound production table and instructs the note off processing meeting the instrument corresponding to the instrument number to the sound source CPU 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone control device which can freely set the tone color of a tone to be generated, and more particularly to a tone control device which can arbitrarily edit a tone color for a plurality of parts. It is about.

[0002]

2. Description of the Related Art In general, electronic musical instruments such as synthesizers and electronic pianos allow a user to set a desired tone and generate a musical tone.
In such an electronic musical instrument, a note-on event output by operating a keyboard or the like is received, and a note-on process is performed to generate a tone corresponding to the content of the note-on event in a sound source to generate a tone. ing. The tone color of the tone generated at this time can be set in advance. And when you receive a note-off event,
The tone is muted by accessing the tone color information set for the tone and performing a note-off process such as a release rate according to the tone color information. Further, in a conventional electronic musical instrument, a plurality of parts (for example, 16 parts and 32 parts) each of which can set an arbitrary tone color, and
It has a plurality of sound channels (for example, 32 channels, 64 channels, etc.) that can simultaneously sound.

[0003] By editing the tone color of a musical tone, the tone color of a part being sounded may be changed. In this case, when the note-off process is performed in response to the note-off event, the timbre information set in the part is accessed, and the timbre information has already been changed at the time of the note-off. At this time, when the timbre of the continuous sound is changed to the timbre of the decay sound, note-off processing for the decay sound is usually unnecessary, so that the note-off processing is not performed. Therefore, the continuous sound being produced is not silenced, and the musical tone is kept sounding. Therefore, in order to prevent such a situation, conventionally, when editing a tone being sounded,
If there is an inconvenience if there is a discrepancy between the pronunciation and the mute, the musical tone being pronounced is forcibly muted or cannot be edited.

[0004]

However, forcibly silencing a musical tone during sounding makes the audibility of the musical tone unnatural, so it is usually not preferable to forcibly silence the musical tone. In addition, if editing cannot be performed on a tone that is being sounded, there may be cases where various modes of performance are restricted. SUMMARY OF THE INVENTION It is an object of the present invention to provide a tone control device which does not cause any inconvenience when note-off processing is performed even if editing is performed without forcibly silencing a tone being sounded.

[0005]

According to the present invention, there is provided a musical tone control apparatus which can achieve the above-mentioned object, comprises a tone generator for generating a tone of a tone which can be arbitrarily set, and a note-on event. And at least processing means for instructing the sound source means to generate sound based on a note-on event, wherein the processing means stores note-off information required for note-off processing at the time of note-on processing executed in response to the note-on event. Means for storing note-off information corresponding to the tone stored in the storage means, upon receipt of a note-off event for note-off of a tone generated by the note-on event. The note-off process is performed based on the information.

Another musical tone control device according to the present invention, which can achieve the above object, comprises a plurality of tone generators each of which generates a tone of an arbitrarily configurable tone, and a musical tone generating device which receives a note-on event. And at least a processing means for instructing any of the plurality of sound source means to generate a sound based on a note-on event, the processing means being necessary for a note-off process at the time of a note-on process executed in response to a note-on event. And storing note-off information corresponding to the tone stored in the storage means upon receipt of a note-off event for note-off of a tone generated by the note-on event. By doing so, note-off processing is performed in the sound source means for which the tone generation instruction has been issued.

According to the present invention, note-off information necessary for note-off is stored in the storage means at the time of note-on processing, and note-off processing is performed based on the note-off information at the time of note-off. Therefore, even if the tone is edited during the tone generation, no inconvenience such as the tone being kept sounding is generated.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an outline of a hardware configuration of a first embodiment of a musical sound control device according to the present invention. In FIG. 1, reference numeral 1 denotes a main microprocessor (main CPU) used as a main control unit.
Under the control of the main CPU 1, the tone control process according to the present invention is executed. Reference numeral 2 denotes a work area used when the main CPU 1 executes processing, an area for storing a tone color table and the like, and an area for storing musical tone data and the like read from an external storage device. Random access memory (RAM) for tone and work,
Reference numeral 3 denotes a read-only memory (program ROM) in which programs executed by the main CPU 1 and the sound source CPU 7 are stored.

Reference numeral 4 denotes a display (monitor) on which a tone editing screen is displayed; 5 a panel switch comprising switches for instructing tone editing and various settings; 6 a waveform of each tone in the case of a PCM tone generator. A tone ROM in which samples are stored and tone parameters are stored in the case of an FM tone generator or a physical model tone generator. A tone generator 7 generates a tone of a set tone when a tone is instructed from the main CPU 1. A sound source CPU 8 for executing a process and generating a musical tone is transmitted from another MIDI device such as a synthesizer or an electronic piano.
IDI event is input and generated MID
MIDI interface (I / F) for outputting I events to other MIDI devices, etc., 9 is a controller composed of operators such as volume and modulation, 10 is a keyboard for outputting MIDI events in accordance with the operation, and 11 is a mutual component. This is the bus line connected to.

Next, the operation of the tone control device of the first embodiment of the present invention having such a configuration will be described. Here, a case where a rhythm tone is set will be described as an example. However, the tone colors that can be set in the present invention are not limited to rhythm tone colors. FIG. 13 shows a part of a list of drum voices in the rhythm tone color. In the rhythm tone color, an instrument is assigned to each note, and an aggregate of the instruments is called a rhythm tone color. Therefore, when this rhythm tone is selected, when a key of a certain note is pressed, the musical tone of the musical instrument assigned to the key is generated. In this list,
Bank number 12 shown in the Bank column
7. The tone name of tone number 1 shown in the Program column is "Standard Kit", the tone name of tone number 2 in the same bank is "Standard2 Kit", and the tone name of tone number 9 is "Room" Kit "and the tone number of tone number 17 in the bank are" Rock Kit ".

For example, in the tone name "Standard Kit", the instrument "Surdo Mute" is assigned to note number 13 (note C-1), and the note number 1
The instrument "Surdo Open" is assigned to the note 4 (note D-1), the instrument "Hi Q" is assigned to the note number 15 (note D-1), and the instrument is assigned to each note number as shown in the following list. Is assigned. In addition, instruments marked with a circle in the note off (Key off) column, for example, note number 26
"Brush Swirl L", note number 28 "Brush Swirl
H ", note number 29" Snare Roll "and the like are tones of a sustained sound, indicating that note-off processing is required. Note that in the program in the tone control process, the timbre is managed by the assigned tone number, and the instrument is also managed by the assigned instrument number.

An instrument number table in which each instrument in such a list of rhythm timbres is managed by an instrument number is created when the rhythm timbre is set, and is stored in the RAM 2 for timbre and work. Alternatively, the instrument number table may be created in advance and stored in the tone ROM 6. FIG. 2A shows the memory structure of the instrument number table. As shown in Fig. 2 (a), the instrument number table is composed of the tone names "Standard Kit", "Standard2 Kit", and "Room".
A table for each tone, such as "Kit", "Rock Kit",..., Etc. In the table for each tone, the instrument numbers of the instruments assigned to the note numbers are stored in the order of the note numbers.

In the tone control apparatus according to the first embodiment of the present invention, each tone in the rhythm tone list shown in FIG. 13 can be set for each part. For example, part 1 has the tone number 1 "Stand
ard Kit ”and tone number 2“ Standard2 Ki
t "can be set. The setting of the tone color in this part can be set independently for each part, and the in-store sign table set for each part is stored in the RAM 2 for tone color and work. FIG. 2B shows the memory structure of the in-store sign table. In-store sign table, Part 1, Part 2, Part 3
.. Are provided for each part, and the instrument numbers of the instruments assigned to the note numbers are arranged in the order of the note numbers in each instrument store table. When setting the tone for each part, the tone is set for each part by specifying the tone number, and the in-store sign table is created by copying the in-store sign table when setting. become.

The instrument assigned to each note in the tone set in the part can be freely edited by the user in the tone switching process described later. When edited, the instrument number corresponding to the corresponding note in the in-store sign table is rewritten. Here, when a note-on event is received and pronounced, it is determined which part is to be pronounced based on the channel number in the note-on event, and the note-on event is set by referring to the in-store sign table set for the corresponding part. The instrument number to be pronounced is acquired from the note number in the event. Then, a tone generation instruction is issued to the sound source CPU 7 so as to generate and generate a musical tone of the instrument tone of the acquired instrument number. Thus, the tone generator CPU 7 reads out the waveform sample of the corresponding tone color from the instrument number, or reads out the tone color parameter corresponding to the instrument number from the tone color ROM 6 and sets it in the tone generator register to perform the calculation, thereby corresponding to the instrument number. The musical tone of the instrumental tone to be generated is generated and pronounced.

At this time, the instrument number obtained from the referenced in-store sign table is written into the note sounding table. This note sounding table is stored in the RAM 2 for the timbre and the work, and its memory structure is shown in FIG. The note sounding table is provided for each of the parts 1, 2, 3 and so on. Each note sounding table has an area in which an instrument number can be written for each note number. In the area corresponding to this note number, the instrument number obtained from the in-store sign table when sounding is instructed is written. In this way, the instrument number of the currently sounding note is stored in the note sounding table, and when a note-off event is received, the note sounding table is referred to and note-off processing is performed.

That is, when a note-off event is received, the part to be note-offed is determined from the channel number in the note-off event, and the note sounding table of the corresponding part is referred to. Then, the instrument number written in the note number area in the note-off event in the referenced note sounding table is acquired, and the instrument corresponding to the acquired instrument number is the tone of the sustained tone, and requires note-off processing. In this case, note-off processing such as a predetermined release rate is performed. If the instrument corresponding to the instrument number is a timbre of an attenuated sound that does not require note-off processing, it is attenuated without performing note-off processing. Then, when the note-off process is completed, the instrument number in the area of the note number for which the note-off has been performed is erased, so that the next note of the same note can be prepared.

Whether or not the instrument corresponding to this instrument number requires note-off processing is managed by a note-off table shown in FIG. In the note-off table, as shown in FIG. 3B, “1” is written in the area arranged for each instrument number when note-off processing is required, and when note-off processing is unnecessary. Is a table in which “0” is written. An instrument requiring note-off processing is an instrument with a circle in the note-off (Key off) column in the drum voice rhythm tone list shown in FIG. 13, and “1” is displayed in the area of the instrument number. Written. This note-off table is created when the rhythm timbre is set, similarly to the instrument number table, and is stored in the timbre and work RAM 2. Alternatively, this note-off table is created in advance and the tone ROM
6 may be stored.

Next, the rhythm timbre switching process executed by the main CPU 1 in the tone control apparatus according to the first embodiment of the present invention will be described with reference to the flowchart shown in FIG. The rhythm tone color switching process is activated when a rhythm tone color switching button provided on the panel switch 5 is operated or a program change message is received via the MIDI I / F 8, and when activated, in step S10. A tone switching event is detected. This timbre switching event is constituted by the number information of the part for switching the timbre and the timbre number of the timbre to be switched. In the case of a program change message, the part number is specified by the MIDI channel number in the message. Next, in step S11, a timbre number is acquired from during the timbre switching event, and the instrument number table corresponding to the timbre number acquired in step S12 is copied to the in-store sign table for the part specified by the timbre switching event. (See FIG. 2A and FIG. 2B). Thus, the tone color of the designated part can be changed or set.

Next, the instrument assigned to each note in the in-store sign table, that is, the main CPU in-store sign process executed in the main CPU 1 for editing the instrument number will be described with reference to the flowchart shown in FIG. The main CPU in-store sign process is started when an in-store sign edit button provided on the panel switch 5 is operated or when an in-store sign table is instructed to be edited by system exclusive in MIDI. , An edit event is detected. The editing event is composed of number information of a part to be edited, note number information to be edited, and instrument number information designated by editing. In the case of system exclusive, the part number is specified by the MIDI channel number.

Next, in step S21, a note number and an instrument number are obtained from the editing event, and in step S22, an instrument number corresponding to the obtained note number in the in-store sign table of the part designated by the editing event is entered. Is changed to the acquired instrument number. As a result, the instrument (instrument) assigned to the designated note number in the designated part can be changed.

Next, when the keyboard 10 is played or MIDI
The main CPU rhythm instrument sound generation processing executed by the main CPU 1 when a note-on message is received via the I / F 8 will be described with reference to the flowchart shown in FIG. If the keyboard 10 is pressed or MIDI
When the note-on message is received via the I / F 8, the main CPU rhythm instrument sound generation process is activated, and a note-on event is detected in step S30. The note-on event includes the number information of the part to be sounded, the note number information and the volume information. In the case of a MIDI message, the number of the part to be sounded is specified by the MIDI channel number. Then, in step S31, a note number during the note-on event is obtained.

Next, in step S32, the instrument number assigned to the acquired note number is acquired from the in-store sign table of the part to be sounded. Next, the instrument number obtained in step S33 is written in the note number area of the part to be sounded in the note sounding table (see FIG. 3A). This note sounding table is referred to at the time of the note-off processing as described above, and the note-off processing corresponding to the tone color information at the time of the note-on is performed. Next, in step S34, the sound source CPU 7 issues a tone generation instruction for the tone corresponding to the acquired instrument number. Thereby, the sound source CPU 7 reads out the waveform sample corresponding to the instrument number or sets the timbre parameter corresponding to the instrument number to the timbre R.
By reading from the OM 6 and setting it in the tone generator register and performing an operation, a musical tone of the instrument tone corresponding to the instrument number is generated and sounded.

Next, when the keyboard 10 is released or MIDI
The main CPU rhythm instrument mute processing executed in the main CPU 1 when the note-off message is received via the I / F 8 will be described with reference to the flowchart shown in FIG. Keyboard 10 is released or MIDI
When the note-off message is received via the I / F 8, the main CPU rhythm instrument mute processing is activated, and a note-off event is detected in step S40. The note-off event includes the number information of the part to be silenced, the note number information, and the like. In the case of a MIDI message, the number of the part to be silenced is specified by the MIDI channel number. Then, in step S31, the note number during the note-off event is obtained.

Next, in step S42, an instrument number corresponding to the acquired note number is acquired in the part to be silenced in the note sounding table.
Next, by referring to the note-off table shown in FIG. 3B from the instrument number acquired in step S43, it is determined whether the tone corresponding to the acquired instrument number is a tone requiring note-off processing. Is determined. Here, if the tone corresponding to the acquired instrument number is a tone that requires note-off processing, the process proceeds to step S44 and the sound source CPU 7 instructs the sound source CPU 7 to mute the tone corresponding to the acquired note number in the part to be silenced. Is indicated. As a result, the sound source CPU 7 performs a silencing process of the corresponding musical tone at a release rate or the like corresponding to the tone color. Then, in step S45, the instrument number in the area of the note number of which the note is turned off in the note sounding table is erased, so as to prepare for the next sounding of the same note. If the tone corresponding to the acquired instrument number is not the tone requiring the note-off process, NO is determined in step S42, and the main CPU rhythm instrument silence process is terminated without performing the note-off process.

In the above-described tone control apparatus according to the first embodiment of the present invention, for example, the main CPU rhythm instrument sound generation processing is executed until the main CPU rhythm instrument sound reduction processing is executed. It is assumed that the tone being generated is changed after the assignment process is executed. Also in this case, at the time of the main CPU rhythm instrument mute processing, the mute processing is performed by referring to the note sounding table stored at the time of the sound generation processing. it can. It should be noted that the sounding by the changed timbre will be performed next time when the same note of the same part is designated.

In the tone control apparatus according to the first embodiment of the present invention, when an event is detected, the main CP
Since processing and determination are performed in U1, the sound source CPU 7 only needs to execute the tone generation process or the tone silencing process, so that the load is reduced and the tone generation speed is not impaired. Therefore, the sound is generated without shifting or interrupting the sounding timing. further,
The sound source CPU 7 is a sound source RO for storing a tone generation program.
In many cases, a single chip including the M6 is implemented. If the main CPU 1 performs the processing for determining a part related to the specification such as the tone color, the main CPU 1 does not need to replace the sound source chip.
The specifications can be changed only by upgrading the program executed by U1, and the tone generator chip can be independently developed.

By the way, a tone control device provided with a plurality of sound sources has recently been proposed. In a tone control device having a plurality of sound sources, a tone to be emitted is assigned to each sound source. This is because there are timbres and the like that are good at generating according to sound source types such as PCM sound source, FM sound source, and physical model sound source. Then, for example, a tone of a tone number assigned to a certain part is assigned, and when the assigned tone number is changed when the tone switching process is performed, the sound source is also changed depending on the tone. . Therefore, when the tone switching process is performed on the tone being sounded in a certain sound source, and the changed tone is assigned to another different tone source, the note-off process is performed in response to the note-off event. When the timbre information set in the part is accessed, the timbre information has already been changed at the time of note-off.
Then, note-off is instructed to a sound source that is not sounding, and note-off processing is not performed for a sound source that is sounding. In this case, if the tone being produced is a continuous tone, the tone is not sounded and the tone is kept sounding.

Accordingly, the second embodiment of the present invention having a plurality of sound sources
In the embodiment, the tone control device does not cause such a problem. FIG. 8 shows an outline of a hardware configuration of the second embodiment of the present invention. In FIG.
Reference numeral 21 denotes a main microprocessor (main CPU) used as a main control unit.
Under the control of 21, the musical tone control processing according to the present invention is executed. An area 22 stores a work area, a table, and the like used when the main CPU 21 executes processing.
A random access memory (work RAM) 23 in which an area for storing musical sound data and the like read from the external storage device is set, and a read-only memory (program) 23 in which a program executed by the main CPU 21 is stored. ROM).

Reference numeral 24 denotes a display (monitor) on which a tone editing screen is displayed, 25 denotes a panel switch comprising switches for instructing tone editing and various settings, and 26 outputs a MIDI event corresponding to an operation. Keyboard, 27 is a controller composed of controls such as volume and modulation, and 28 is another MID such as a synthesizer or electronic piano.
A MIDI interface (I / F) 29 that receives a MIDI event from an I device or the like and outputs the generated MIDI event to another MIDI device or the like, and 29 is a bus line that connects each unit to each other.

Reference numerals 31, 32, and 33 denote different types of sound sources. The sound source 31 has a sound group number of a sound group 1, the sound source 32 has a sound group number of a sound group 2, and the sound source 33 has a sound group. The number is sound group 3. These sound sources 31, 3
The configuration of each of the sound sources 31 and 33 is the same.
The sound source 31 will be described as an example. The sound source 31 includes a sound source CPU 31-1 that executes a process of generating a musical tone of a designated tone when a sound is instructed.
1-1 generates a tone by executing a tone generation program stored in a tone generator program ROM 31-4. At this time, the tone generator CPU 31-1 generates a musical tone by using the RAM 31-3 for the timbre and the work in which the area for storing the parameters for the timbre and the work area are set. When the sound source 31 is a PCM sound source, waveform samples of each timbre are stored in the timbre ROM 31-2. When the sound source 31 is an FM sound source or a physical model sound source, timbre parameters are stored in the timbre ROM 31-2. become.

Next, the operation of the second embodiment of the present invention having such a configuration will be described. The tone numbers in the voice list in which the tone is set for each tone number are assigned to the sound sources 31 to 33 suitable for generating the tone, and correspond to the sound sources 31 to 33 assigned to each tone number. The tone group numbers to be played are managed by a tone color data table. FIG. 9A shows an example of this tone color data table. In this example, the timbre number table is a timbre data table for 128 kinds of timbres of timbre numbers 0 to 127, and the timbre number area of the timbre numbers 1 to 3 assigned to the timbre numbers corresponds to the timbre number table. Has been written to. This tone color data table is created, for example, during the initial processing of the musical tone control processing and stored in the work RAM 22.

Further, the tone color numbers of the tone colors to be generated set for each part are stored in the tone color assignment memory.
The tone setting for each part is set by the panel switch 25.
Operate the tone setting button in
It can be done freely by the program change message in DI. FIG. 9B shows the data structure of the tone color assignment memory. By referring to the tone color assignment memory, the tone color number set for each part can be known. , It is possible to know the sound group number of the sound source that generates the musical tone of the tone generated in each part. The area of the tone assignment memory is set in the work RAM 22.

Here, when the tone control device of the second embodiment receives a note-on event and sounds, it determines which part to sound based on the channel number in the note-on event. The set tone color number is acquired by referring to the stored contents of the tone color assignment memory, and the tone group number is acquired from the acquired tone color number by referring to the tone color data table. And the sound source CP of the sound source corresponding to this sound group number
U is instructed to generate and generate a musical tone of the tone color of the acquired tone color number. As a result, the sound source CPU
In the case of a CM tone generator, a tone corresponding to the tone number is generated and sounded by reading out a corresponding waveform sample from the tone number. In the case of an FM tone generator or a physical model tone generator, the tone parameters corresponding to the tone number are read out from the tone ROM, set in the tone generator register, and calculated to generate a tone of the tone corresponding to the tone number. I do.

At this time, the tone color number obtained from the referenced tone color assignment memory is written in the note sounding table. This note sounding table is work RAM2
2 is shown in FIG. 9 (c). The note sounding table is provided for each part of Part 1, Part 2, Part 3,..., And each note sounding table has an area in which a tone number is written for each note number. In the area corresponding to the note number, the tone color number obtained from the tone color assignment memory at the time of sounding instruction is written. As described above, the tone color number of the currently sounding note is stored in the note sounding table, and when a note-off event is received, the note sounding table is referred to and the note-off process is performed.

That is, when a note-off event is received, the part for which note-off is instructed is determined from the channel number in the note-off event, and the note sounding table shown in FIG. 9C for the corresponding part is referred to. Then, in this referenced note sounding table, the tone color number written in the area of the note number for which note-off is specified in the note-off event is obtained. Next, the tone group number is determined from the tone color number obtained by referring to the tone color data table shown in FIG. 9A, and note-off is instructed to the sound source of the determined tone group number. In this case, if the timbre for which note-off has been instructed is a timbre of a sustained tone and needs a note-off process, a note-off process having a predetermined release rate or the like is performed. Further, if the tone color for which note-off is instructed is a tone color of an attenuated sound that does not require note-off processing, the tone is attenuated without note-off processing. Then, when the note-off process is completed, the tone color number in the area of the note number for which the note-off has been performed is deleted from the note sounding table, so that the same part and the same note can be sounded next time.

Next, the tone color switching process executed in the tone control device according to the second embodiment of the present invention will be described.
This will be described with reference to the flowchart shown in FIG.
The tone switching process is performed by operating a tone (sound group) switching button provided on the panel switch 25,
It is activated when a program change message is received via the DI I / F 8, and when activated, step S5 is executed.
At 0, a tone (sound group) switching event is detected. This timbre switching event is constituted by the number information of the part for switching the timbre and the timbre number of the timbre to be switched. In the case of a program change message, the MIDI channel number in the message designates the number of the part whose timbre is to be switched. Next, in step S51, the part number and the timbre number are obtained from the timbre switching event, and in step S52, the timbre number of the area corresponding to the obtained part number in the timbre assignment memory is rewritten with the obtained timbre number. . Thereby, the tone color of the designated part can be changed.

Next, when the keyboard 26 is played or MIDI
Main CPU executed by main CPU 21 when a note-on message is received via I / F 28
The sound generation process will be described with reference to the flowchart shown in FIG. The keyboard 26 is depressed or MIDI I / F
When the note-on message is received via the key 28, the main CPU tone generation process is started and a note-on event is detected in step S60. The note-on event includes the number information of the part to be sounded, the note number information and the volume information. Note that MIDI
In the case of a message, the number of the part to be sounded is specified by the MIDI channel number. Then, in step S61, the part number and the note number during the note-on event are obtained.

Next, in step S62, the tone color number assigned to the part to be sounded is acquired by referring to the area of the acquired part number in the tone color assignment memory. Next, the tone color number acquired in step S63 is written in the area of the note number acquired from the note-on event in the part to be sounded of the note sounding table (see FIG. 9C). This note sounding table is referred to at the time of the note-off processing as described above, and the note-off processing corresponding to the tone color information at the time of the note-on is performed. Next, in step S64, by referring to the timbre data table shown in FIG. 9A, the sound source C of the sound group number determined from the timbre number obtained in step S62.
The PU is instructed to sound. Thus, the tone generator CPU can read the waveform sample of the corresponding tone from the tone number, or can read the tone parameter corresponding to the tone number from the tone ROM and set it in the tone register to perform the calculation, thereby supporting the tone number. The tone of the desired tone is generated and pronounced.

Next, when the keyboard 26 is released or MIDI
The main CPU silencing process executed by the main CPU 1 when the note-off message is received via the I / F 28 will be described with reference to the flowchart shown in FIG. The keyboard 26 is released or MIDI I / F2
When the note-off message is received via the CPU 8, the main CPU silence process is activated and a note-off event is detected in step S70. The note-off event includes the number information of the part to be silenced, the note number information, and the like. In the case of a MIDI message, the number of the part to be silenced is specified by the MIDI channel number. Then, in step S71, the part number and the note number of the note-off from the note-off event are obtained.

Next, in step S72, the tone generation table shown in FIG. 9C in the part to be silenced is referred to, and the tone color number corresponding to the acquired note number is obtained. Next, in step S73, FIG.
By referring to the tone color data table shown in (a), the tone group number which is producing the tone for which the note-off is instructed is determined from the acquired tone color number, and the sound source CPU of the tone group number is silenced. Is indicated. As a result, the sound source CPU silences the corresponding musical tone at a release rate or the like corresponding to the timbre. Then, in step S74, the tone number in the note number area of the part for which the note is turned off in the note sounding table is erased, so as to prepare for the next sounding of the same part and the same note, and the main CPU silencing process ends. I do.

When an instrument is assigned to each note number, an instore sign table is prepared in the same manner as in the first embodiment of the present invention, and the tone color of the instrument assigned to each note number is set to a note. Judgment is made as to whether or not the tone needs to be turned off. If the tone requires note-off processing, note-off processing is executed. If it is determined that the tone has an attenuated sound that does not require note-off processing, note-off processing is performed. The main CPU silence process may be ended without executing the process. In the tone control device according to the second embodiment of the present invention described above, for example, during the tone generation process from the execution of the main CPU tone generation process to the execution of the main CPU mute process, the tone color switching process is executed and the tone generation is performed. It is assumed that the tone number of the part has been changed. In this case, even if the tone color of the tone number after the change is assigned to a tone group number (sound source) different from the tone group number (sound source) before the change, the note sound stored at the time of the tone generation process at the time of the main CPU silence process is performed. Since the silencing process is performed on the sound source that is generating sound by referring to the table, it is possible to prevent inconveniences such as a musical tone being kept sounding. It should be noted that the sounding by the changed timbre will be performed next time when the same note of the same part is designated.

In the tone control device according to the second embodiment of the present invention, when an event is detected, the main CP
In U21, the processing and judgment are executed, and the sound source CPU only needs to execute the tone generation processing or the tone mute processing, so that the load is reduced and the tone generation processing speed is not impaired. Therefore, the sound is generated without shifting or interrupting the sounding timing. further,
Even in the case where a plurality of sound sources are provided and the sound source CPU is switched in accordance with the tone color, the plurality of sound sources are connected to one main CP.
U can make sound and mute assignable.
Further, the sound source CPU is often formed as a single chip including a sound source ROM for storing a tone generation program, and if the main CPU performs processing for determining parts relating to specifications such as tone color, the sound source chip is replaced. Main C without
The specifications can be changed only by upgrading the program executed by the PU, and the sound source CPU can be independently developed.

It should be noted that a hard disk drive or a removable disk drive is provided, and a tone control program stored in these disks is read out to read the work R.
By writing to the AM, the main CPU may be made to execute the same operation as when the tone control program is stored in the program ROM. This makes it easy to add a tone control program, upgrade the version, and the like. Also, CD-RO
An M (compact disk-read only memory) drive may be provided, and the tone control program stored in the CD-ROM may be stored in a hard disk or a removable disk. Thus, the CD-RO
Even if M is used, new installation or version upgrade of the tone control program can be easily performed. Instead of the CD-ROM drive, various types of recording media such as a floppy disk device and a magneto-optical disk (MO) device may be used.

Further, if a network interface is provided, it can be connected to a communication network such as a LAN (local area network), the Internet, a telephone line, etc., and can be connected to a server computer via the communication network. Therefore, the tone control program and various data can be downloaded from the server computer.

[0045]

As described above, according to the present invention, note-off information necessary for note-off is stored in the storage means at the time of note-on processing, and note-off processing is performed based on the note-off information at the time of note-off. Therefore, even if the timbre is edited during the tone generation, no inconvenience such as the musical tone being kept sounding is generated. Further, when an event is detected, processing and judgment are executed in the main CPU,
Since the sound source CPU only needs to execute the tone generation process or the tone silencing process, the load is reduced and the speed of the tone generation process is not impaired. Therefore, the sound is generated without shifting or interrupting the sounding timing. Furthermore, a plurality of sound sources are provided, and the sound source CP
Even if U is switched, multiple sound sources
Sound and mute can be assigned by one main CPU. Furthermore, the sound source CPU is often implemented as a single chip including a sound source ROM for storing a tone generation program. If the main CPU performs processing for determining parts relating to specifications such as tone color, the sound source chip can be replaced. The specification can be changed only by upgrading the program executed by the main CPU without the need to perform the operation, and the sound source CPU can be independently developed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a hardware configuration of a musical sound control device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an instrument number memory structure and an in-store sign table memory structure according to the first embodiment of the tone control device of the present invention.

FIG. 3 is a diagram showing a note sounding table memory structure and a note-off table in the first embodiment of the tone control device of the present invention.

FIG. 4 is a diagram showing a flowchart of a rhythm tone color switching process in the first embodiment of the musical tone control device of the present invention.

FIG. 5 is a diagram showing a flowchart of a main CPU in-store sign process in the first embodiment of the musical sound control device of the present invention.

FIG. 6 is a diagram showing a flowchart of a main CPU rhythm instrument sound generation process in the first embodiment of the musical sound control device of the present invention.

FIG. 7 is a diagram showing a flowchart of a main CPU rhythm instrument silence process in the first embodiment of the musical tone control device of the present invention.

FIG. 8 is a diagram illustrating a hardware configuration of a tone control device according to a second embodiment of the present invention.

FIG. 9 is a diagram showing a tone color data table, a tone color assignment memory structure, and a note sounding table memory structure in a second embodiment of the tone control device of the present invention.

FIG. 10 is a diagram illustrating a flowchart of a tone color switching process according to a second embodiment of the musical tone control device of the present invention.

FIG. 11 is a diagram showing a flowchart of a main CPU tone generation process in a second embodiment of the musical tone control device of the present invention.

FIG. 12 is a diagram showing a flowchart of a main CPU silencing process in the second embodiment of the musical tone control device of the present invention.

FIG. 13 is a diagram showing a list of drum voices in a rhythm timbre.

[Explanation of symbols]

1, 21 Main CPU, 2, 31-3 Tone for work, RAM for work, 3, 23 program ROM, 4, 24 display, 5, 25 panel switch, 6, 31-2 Tone ROM, 7, 31-1 Sound source CPU, 8,28 MID
I / F, 9, 27 controller, 10, 26 keyboard, 11, 26 bus line, 22 work RAM, 3
1, 32, 33 sound source, 31-4 sound source program RO
M

Claims (2)

[Claims] 1. A sound source means for generating a tone of a tone which can be set arbitrarily, and a processing means for instructing the sound source means to generate a sound based on a note-on event when a note-on event is received. The processing means stores note-off information necessary for note-off processing in a note-on processing executed in response to a note-on event in a storage means, and notes-off a musical tone generated by the note-on event. Receiving an event, obtaining note-off information corresponding to the musical tone stored in the storage means, and performing note-off processing based on the note-off information. . 2. A plurality of tone generators each of which generates a tone of a tone that can be set arbitrarily, and, when a note-on event is received, sounds to one of the plurality of tone generators based on a note-on event. At least processing means for giving an instruction, the processing means stores note-off information necessary for note-off processing in a note-on processing executed in response to a note-on event in a storage means, and is generated by the note-on event. By receiving note-off information corresponding to the musical tone stored in the storage unit when a note-off event for note-off of the musical tone is received, note-off information is generated in the sound source unit for which the tone generation instruction has been issued. A tone control device characterized by performing processing.