JPH04499A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To reduce the feeling of incongruity as to performance representation by setting and storing truncation inhibition and permit information in a storage means corresponding to a musical sound generation channel based upon performance information and altering the storage means by an altering means. CONSTITUTION:A setting means 2 stores and sets the truncation and permit information in the storage means 1 corresponding to the musical sound generation channel based upon performance information and controls whether truncation by a truncating means 4 is inhibited or permitted according to the setting contents and the truncation of a channel which exerts large influence upon performance representation is inhibited when a new musical sound is assigned. The inhibition information of the means 1 is freely altered into the permission information through the altering means 3 controlled by a CPU, etc., as the sound generation of the channel musical sound is elapsed. This constitution performs proper truncation inhibition control to reduce the feeling of incongruity as to the performance representation.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an electronic musical instrument, and more specifically, when assigning a musical tone to a musical tone generation channel in the generation of a new musical tone, the present invention relates to an electronic musical instrument. This relates to a technique for truncating due to lack of channels.

(Prior Art) Conventionally, in order to truncate a musical tone generating channel that is currently producing sound, for example, the musical tone generating channel that started producing sound earliest is truncated and a new musical tone is assigned.

Another method is to truncate the musical tone generation channel to which the musical tone with the lowest envelope level is assigned, and to allocate a new musical tone.

(Problem to be Solved by the Invention) By the way, as the musical tone generation channel to be truncated in order to allocate a new musical tone, one is selected that has little effect even if truncated, or in other words, has little effect on performance expression due to truncation. This is desirable.

However, according to the former method, even though there is a musical sound generation channel that starts producing sound later but has little effect on performance expression, the musical sound generation channel that starts producing sound early (which has a large influence on performance expression) is truncated, A new musical tone may be assigned.In this case, there is a problem in that it creates a sense of discomfort in the performance expression.

According to the latter, there is a musical sound generation channel whose envelope level is large but has little effect on performance expression due to its relationship with other musical sounds, timbre, etc.; A large tone generation channel may be truncated and a new tone assigned. In this case as well, there is a problem in that it gives a sense of discomfort in terms of performance expression.

SUMMARY OF THE INVENTION The present invention aims to solve these problems and provides an electronic musical instrument that can reduce the sense of discomfort in performance expression when transcribing a musical sound generation channel that is currently producing sound due to a lack of musical sound generation channels. It's about doing.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the structural features of the electronic musical instrument according to the present invention are as shown in FIG. Storage means (1) capable of correspondingly storing truncate information regarding truncation prohibition/permission; Setting means (2), (c) for storing and setting truncate information for which truncation is prohibited; and (c) for allowing truncation of truncate information for which truncation is prohibited stored in the storage means (1) according to the progress of sound generation of musical tones of the corresponding musical sound generation channel. and (d) truncation means (4) for truncating a musical tone generation channel for which truncation information indicating truncation permission is stored in the storage means (1) when truncate. It is to have the following.

(Function) The storage means (1) capable of storing truncate information regarding truncation prohibition/permission is truncated based on the performance information by the setting means (2) in accordance with the musical sound generation channel to which the musical sound based on the performance information is assigned. Store and set prohibited truncation information. In addition, the change means (
3), the truncate information that prohibits truncation is stored and changed to truncate information that allows truncation in accordance with the progress of sound generation of musical tones of the musical tone generation channel corresponding to the stored truncate information that prohibits truncation.

At the time of truncation, the truncation means (4) assigns a new musical tone to the musical tone generation channel for which truncation information of truncation permission is stored in the storage means (1).

(Effects of the Invention) Therefore, when a new musical tone is assigned, truncation of musical tone generation channels that have a large influence on performance expression is prohibited based on performance information, and discomfort in performance expression can be reduced.

(Embodiments) Next, specific embodiments of the electronic musical instrument according to the present invention will be described with reference to the drawings.

[First Embodiment] When truncating is prohibited for a predetermined time based on the truncate prohibition flag First, in FIG. The operation states of a plurality of operators for giving instructions such as the following are supplied to the microcomputer 22 as operator data via a path 21. This microcomputer 22 includes a central processing unit (cPU) 22A that executes a predetermined program, and a read-only memory (ROM) 22B that stores data necessary for various processes such as this program, 20 types of pattern data, and data related to musical tone generation. A readable/writable memory (R
AM) 22C and CP at predetermined time (1mSeC) intervals.
It is composed of a timer 22D that applies a timer increment to U22A. Further, the operation status of the operators on the operation panel 20 is displayed by the display circuit 23 under the control of the microcomputer 22.

The CPU 22A executes a predetermined program stored in the ROM 22B based on the performance data, operator data, etc. stored in the working area map set in the RAM 22C. It controls a musical tone generation circuit 24 having musical tone generation channels. Then, a desired musical tone signal is generated by the musical tone generation channel assigned by a predetermined means,
A musical tone is emitted from a speaker 26 via an amplifier 25.

Note that the musical tone generation channel generates a musical tone signal based on musical tone generation parameters in response to an instruction to generate a musical tone, and changes the generated musical tone signal in accordance with the passage of time. In addition, a smooth envelope level is generated by interpolating the target value indicating the next envelope level to be reached and the rate indicating the change in envelope level per predetermined time, and the envelope level is changed to a rapid decay rate by a rapid decay instruction. Therefore, it is attenuated, and when the envelope level reaches "0", the musical tone generation channel number is loaded into the truncation end FIFO.

By the way, in the ROM 22B, the number of truncate prohibition steps, which determines up to which step truncation of the corresponding musical tone generation channel is prohibited, is stored for each tone number, corresponding to the truncate prohibition flag "l" and "0°". The truncate prohibition flag "1" corresponds to a long truncate prohibition section and the number of truncate prohibition steps set to obtain a long release, and the truncate prohibition flag "0"
corresponds to the number of truncate-prohibited steps set to obtain a short truncate-prohibited section and a short release. For example, snare sounds usually do not require a very long release, so if the truncate prohibition flag is 0, the number of truncate prohibition steps that can be truncated immediately after the attack ends and the release starts. ``In the case of 1 pass, the number of steps in which truncation is prohibited is set such that a longer release can be obtained.

However, because we want the tone corresponding to a crash cymbal to sound as long as possible, we set the truncate prohibition section to a long truncate prohibition section so that a longer release can be obtained even if the truncate prohibition flag is "0" compared to other tones. This is the number of steps.

Next, the song data map, pattern map, task management map, tone ordering channel management map, envelope management map, and performance data FIFO set in the working area of the RAM 22C will be explained. Note that a part of each is shown in FIG.

☆Song data map (Fig. 3(A)) Pattern numbers are stored corresponding to each song step number of 16 steps from "0 to 15".

☆Pattern map (Fig. 3 (B)) 8 patterns are memorized, and the pattern number for each pattern is memorized, as well as the part number of each part consisting of 8 parts from 0 to 7°, and the part of each part. Tone color number indicating the tone color corresponding to the number, and each pattern step number covering 16 steps from 0 to 15°, where one pattern step is the timing corresponding to a 16th note (1 tempo clock) in the case of 4/4 time. The velocity and truncate prohibition flag indicating the strength of each musical tone are stored in accordance with the truncation prohibition flag.

☆Task management map (Figure 3 (c)) Corresponding to the task number that indicates the priority of each task with "°1~8", ■ "1°" indicates that timer processing is required. Request flag, ■ ``0'' indicates that the task is running, ``1'' indicates that the task is ready, and ``2 pass'' indicates that the task is in wait status, and ■ A wait event that indicates the event that the task is waiting for. The value, and the 1st event and 2nd event of the task...
・For each event, an event order flag indicating the occurrence of the event is stored.

☆Musical tone generation channel management map (Figure 3 (D))'“0
Corresponding to each musical sound generation channel number of each musical sound generation channel indicated by ~15°゛, ■Current sound generation level indicating the sound generation level of the musical sound currently being generated for each musical sound generation channel;
■The current truncate prohibition flag indicates that truncation is currently prohibited with "1"; ■The truncate flag indicates that truncation is in progress with "°1"; `` A processing waiting flag indicating that processing is pending, ■ A tone number indicating the tone color, ■ Velocity indicating the strength of the musical tone, ■ ′“
A truncate prohibition flag indicating prohibition of truncation in one pass, (1) a group of musical tone generation parameters related to the generation of a new musical tone, and (2) a group of envelope generation parameters related to the generation of an envelope of a new musical tone are stored.

☆Envelope management man '7' (M3 figure (E)) Corresponding to each musical sound generation channel, the text is indicated by 0 to 15. The current enhero pre-help indicating the en-hero pre-help, ■ the target value indicating the next envelope task to be reached, ■ the rate indicating the change in envelope level per predetermined unit time (5 mSec), and ■ relating to the target value and rate. The current step number indicating the current step, and the number of steps for which truncation is prohibited, in other words, time (-number of steps x predetermined unit time (5 mSec))
The number of steps in which truncation is prohibited, and the target value and rate at each step are stored.

☆Performance data FIFO Stores performance data, and is configured in a ring shape, and writes and continues writing to the addresses indicated by the write pointer and read pointer, and each pointer advances each time it is written or read. It is configured so that

Next, the basic operation of the electronic musical instrument according to the present invention configured as described above will be explained in detail.

In the electronic musical instrument according to the present invention, each task (manipulator task, gray task, main assigner task, pronunciation task, pre-assigner task, envelope task, edit task, display task) is multitasked, and each Priority processing between tasks is performed by a monitor program.

First, the monitor program will be explained based on the flowcharts shown in FIGS. 4 and 5.

Reset routine (Figure 4 (A)) Executes when a reset is applied, such as when the power is turned on.

The status of all task numbers in the ZA-1 task management map is set to '1' indicating ready, and the timer processing request flag, waiting event value and event occurrence flag are set to 'O'.゛Sets the timer-interrupted processing start flag Tl5F, which indicates that the timer-interrupted processing is started, to “O”.
Perform initial settings such as setting to .

Set the request source task number N5TK, which indicates the task number of the ZA-2 monitor call request source, to "1" and change the status of the task number "1'" on the task management map.
'0''' and run the manipulator task.

・Event wait monitor call routine (Figure 4 (B)) Executes when a running task is waiting for an event.

Request source task number N in the ZB-1 task management map
In the task number corresponding to 5TK, it is determined whether the nth event of the event occurrence flag corresponding to the request source event value N5ET indicating the type of monitor call request event is "°1" indicating the occurrence of an event. This nth
If the event is "1°" indicating the occurrence of an event, the task returns to the task that made the event wait monitor call. Note that the correspondence between the request source event value N5ET and the nth event of the event occurrence flag is such that, for example, when the request source event value N5ET is "°1", the request source event value N5ET of the first event is "°2". If the request source event value N5ET is ``, then the request source event value N5ET of the second event is ``3゛'', then the request source event value N5ET is expressed in binary numbers so that it corresponds to the first event or the second event. Each bit of the case is associated with n of the n-th event.

ZB-2 If the nth event of the event occurrence flag is not "1'" and does not indicate the occurrence of an event in the judgment in step ZB-1, the requesting task number N
Set the status in the task number of the task management map corresponding to 5TK to "2" indicating the weight, set the waiting event value to the request source event value N5ET, and
In preparation for resuming processing, interrupt processing is performed such as saving the contents of registers and the like being used by the requesting task to the stack area.

In the ZB-3 task management map, search for tasks that have a lower priority than the task that made the event wait monitor call and whose corresponding status is "1" and indicate ready, in order of task number, and check whether there is a task that indicates ready. to decide.

If there is no task indicating this ready status, there is no task to process anymore, so requesting task number N5TK
is set to ``°9'', which indicates a sleeve, and the sleeve is activated.The activation from the sleeve is performed by a hardware interrupt from a timer or the like.

ZB-4 If there is a task that indicates ready in the judgment in step ZB-3, the requesting task number N5T
Let K be the task number of the task indicating ready, and
The status of the task management map corresponding to the task number of the task indicating ready is set to "0", and the corresponding task is run. Note that during the run, restart processing is performed, such as returning the contents saved in the stack area during the task suspension processing to the original registers.

Event occurrence monitor call routine (Figure 4(c)) Executes when an event occurs in a task.

In the task number corresponding to the request destination task number NDTK indicating the task number of the monitor call request destination in the ZC-1 task management map, the event occurrence flag corresponding to the request destination event value NDET indicating the event value of the monitor call request destination. Set the n event to “1”.
When setting the event occurrence flag for the nth event, for example, if the requested event value NDET is "1", the first event is set, and if the requested event value NDET is "'2", the second event is set. Set the event order flag for “1pa”.

ZC-2 The status in the task number of the task management map corresponding to the request destination task number NDTK is a weight of °゛2゛, and the waiting event value is the request destination event value ND.
It is determined whether or not it is a waiting event in response to the ET. If this status is not wait, or if the waiting event value does not correspond to the requested event value NDET and is not a waiting event, the task returns to the task that made this monitor call. Note that the correspondence between the waiting event value and the request destination event value N0ET is, for example, if the waiting event value is “
1°, the request destination event value NDET is “l”.
゛, If the wait event value is "2", the request destination event value NDET is "t 2 u", and the wait event value is "3".
If the request destination event value NDET is ``1'' or ``2'', it is determined that the request destination event value corresponds to ``1'' or ``2''. It is made to correspond with the value NDET.

ZC-3 In the judgment in step ZC-2, the status of the task number in the task management map corresponding to the request destination task number NDTK is "2" weight and the waiting event value is a waiting event corresponding to the request destination event NDET. If so, this status is set to "1" indicating ready.

ZC-4 It is determined whether the request destination task has a high priority depending on whether the request destination task number NDtK is less than the request source task number N, STK. If the request destination task number NDTK is not less than the request source task number N5TK and the priority of the request destination task is low, the task returns to the current task that made this monitor call.

ZC-5 In the judgment in step ZC-4, if the requesting task number NDTK is less than the requesting task number N5TK and the priority of the requesting task is high, the task number in the task management map corresponding to the requesting task number N5TK is The status is set to "1pa" indicating ready, and interruption processing such as saving the contents of registers and the like being used by the requesting task to the stack area is performed in preparation for restarting the processing.

ZC-6 Set the request source task number N5TK to the request destination task number NDTK, set the status in the task number of the task management map corresponding to the request destination task number NDTK to '0'' indicating run, and set the request destination task to run. Note that during the run, restart processing is performed such as returning the contents saved in the stack area in the interruption processing of the requested task to the original registers.

Timer include processing routine (Figure 5) When the timer includes the timer, first check the timer counter corresponding to each task, and if it exceeds "1", decrement it by 1', and If it does not exceed '1°', the corresponding (nth) event of the event occurrence flag for the task number in the task management map is set to '1', which indicates the occurrence of an event, and if the timer event is being waited for, “1” indicates the status is ready.
Set to . Next, it is determined whether or not a timer event should be generated in order from the tasks with the highest priority, and the tasks that meet the conditions are run.

It is determined whether the ZD-1 timer included processing start flag Tl5F is "1". If this timer-in-interrupted processing start flag Tl5F is not "1", the initial settings of all tasks have not been completed yet, so the timer-in-interrupted process is terminated and executed when the timer-in-interrupted occurs. Return to task.

ZD-2 If the timer included processing start flag Tl5F is "1" in the judgment in step ZD-1, the timer included processing target number TCTN indicating the task number of the timer interlinked processing target is set to "8". Set to .

It is determined whether the timer processing request flag in the task number of the task management map corresponding to the ZD-3 timer interwoven processing target number TCTN is "1". If this timer processing request flag is not "1pa", the process advances to step ZD8.

ZD-4 If the timer processing request flag for the task number in the task management map is "1" in the judgment in step ZD-3, it indicates the value of the timer counter of the task corresponding to the timer included processing target number TCTN. Nth task timer counter value TCNE [TCTN
] is greater than "1". This Nth task timer counter value TCNE [TCTN] is “1”
If it exceeds ', the process advances to step ZD10.

ZD-5 In the judgment in step ZD-4, the Nth task timer counter value TCNE [TCTN] is “1”.
”, first add the N-th task time interval TCND [TCTN] indicating the time interval of the task corresponding to the timer-interrupted processing target number TCTN to the N-th task timer counter value TCNE [TCTN]. , this value is set as the new Nth task timer counter value TCNE
[TCTN]. Next, set the first event of the event occurrence flag in the task number of the task management map corresponding to the timer included processing target number TCTN as "'
Set to 1°゛.

ZD-6 Determine whether the status in the task number of the task management map corresponding to the timer included processing target number TCTN is a weight of "2" and the waiting event value is "1", which corresponds to the first event. . If this task does not have a weight of "2" or does not correspond to the first event and is not waiting for a timer event, the process advances to step ZD-8.

ZD-7 In the judgment in step ZD-6, the status of the task number in the task management map corresponding to the timer-interrupted processing target number TCTN is “°2゛°”.
When the wait event value is "1" and corresponds to the first event, the status of the task number in the task management map corresponding to the timer included processing target number TCTN is set to "1" indicating ready. Set.

ZD-8 timer interrelated processing target number TCTN is °
Determine whether the value exceeds “1''.

This timer interactive processing target number TCTN is “1”
”, step ZD-11 is performed because all the timer event occurrence flag update processing has been completed.
Proceed to.

ZD-9 If the timer-included processing target number TCTN exceeds '1' in the judgment in step ZD-8, the timer-included processing target number TCTN
is decremented by "1" and the process returns to step ZD-3.

ZD-10 In the judgment in step ZD-4, the Nth
Task timer direct TCNE [TCTN] is “
If it exceeds '1', the Nth task timer counter value TCNE [TCTN] is decremented by '1' and the process proceeds to step ZD-8.

ZD-11 If the timer-interrupted processing target number TCTN does not exceed "1" in the judgment in step ZD-8, the timer-interconnected processing target number TC
It is determined whether TN is less than the requesting task number N5TK. If the timer inclination processing target number TCTN is not less than the requesting task number N5TK, the priority of the task being executed when the timer inclination occurred is not low, so the timer inclination is terminated and the task is returned to that task. return.

ZD-12 In step ZD-11, if the timer-interrupted processing target number TCTN is less than the requesting task number N5TK, the status of the task number in the task management map corresponding to the timer-interconnected processing target number TCTN is ready. ° “1” °
Determine whether or not. This status is “’1”
If not, proceed to step ZD-15.

ZD-13 If it is determined in step ZD-12 that the status of the task number in the task management map is "1" which indicates ready, the task that was being executed when the timer interrupt occurred in the timer-interrupted processing routine is The status of the task number in the task management map corresponding to the requesting task number N5TK is set to "l 11" indicating ready, and the contents of the registers, etc. being used by the requesting task are stored in the stack area in preparation for restarting the process. Perform interruption processing such as evacuation.

ZD-14 Set the request source task number N5TK to the request destination task number NDTK, and set the status of the task number in the task management map corresponding to the timer included processing target number TCTN to "0'° indicating run,
Generate a timer event and run the corresponding task. Note that during the run, restart processing is performed, such as returning the contents saved in the stack area during the task suspension processing to the original registers.

ZD-15 If the status of the task number in the task management map is not "1 pass" indicating ready in the judgment in step ZD-12, it is determined whether or not the timer-interrupted processing target number TCTN is less than "8". .This timer interacted processing target number TCTN is “
If it is not less than 8'', all timer interrupt processing has been completed, so the timer interrupt is terminated and goes to sleep.

ZD-16 If the timer-included processing target number TCTN is less than '8°' in the judgment in step ZD-15, the timer-included processing target number TCTN
Increment TN by 1 and go to step ZD-1.
Return to 1.

Next, each task will be explained in order of priority of task processing.

○Manipulator task (Fig. 6) The manipulator task starts execution when a manipulator task timer event occurs, detects the operating state of the manipulators on the operation panel 20, and if there is a change in this operating state, executes the manipulator task. Raise the corresponding event. Note that since this is a known technique, only the main points will be explained.

A-1 First, there is a discontinued control map that stores the new control operation state for each control, an old control map that stores the previous control operation state for each control, and a Set occupied variables to initial values. Note that the mode is set to a play mode in which automatic performance is executed, stopped, etc., and the performance is stopped. Next, the first task timer counter value TCNE [1] is set to “11”°, the first task time interval TCND [1] is set to “9°”, and the task number on the task management map is set to “1”. Set the timer processing request flag to "1".

A-2 Request source task number N5TK and request source event value N
5ET is set to "1°" and an event wait monitor call is made, and when an operator task timer event occurs, the process advances to the next step A-3.

A-3 Set the waiting event value of the task number "1" in the task management map and the first event of the event occurrence flag to "0".
”.

A-4 Scan each operator in a predetermined sequence based on publicly known technology to read the operation status, determine whether there is an instruction to change new settings, etc., and issue a new setting change as follows. If there is an instruction, the corresponding process is performed. Note that if there is no new instruction to change settings or the like, or if the corresponding processing has ended, the process returns to step A-2.

☆When the edit controller is operated while the performance is stopped in the play mode, the edit mode flag is first set to "1°°" indicating the edit mode, and the edit mode is entered to update the settings of the performance data. At the same time, by setting the request destination task number NDTK to "8" and the request destination event value NDET to "1", an edit mode display request event is generated and an event occurrence monitor call is performed.

☆When an edit-related operator is operated in edit mode, first the request destination task number NDTK is set to “7”.
'', an edit request event is generated by setting the request destination event value NDET to an event value corresponding to the operation, and an edit generation monitor call is performed. next,
By setting the request destination task number NDTK to "8pa" and the request destination event value NDET to an event value corresponding to the operation, an edit display request event is generated and an event occurrence monitor call is performed.

☆When the play operator is operated in the edit mode, first, various processes in the edit mode-F being processed are interrupted, the edit mode flag is set to "O", and the play mode is entered.

Next, by setting the request destination task number NDTK to "'8" and the request destination event value NDET to "'2pa", a play mode display request event is generated and an event occurrence monitor call is performed.

☆When the start control is operated while the performance is stopped in the play mode, the playing flag, which indicates that the performance is being played at "1", is first set to "1°", and then the second task timer counter value is set to "1°". Set TCNE[2] to "1".Furthermore, by setting the request destination task number NDTK to "P2" and the request destination event value NDET to °"2°", a start request event is generated and the event is generated. Make a monitor call and then set the request destination task number NDTK to "°8'"
By setting the request destination event value NDET to "'4", a performance display request event is generated and an event occurrence monitor call is made.

☆When the stop control is operated during a performance, the playing flag is first set to "'0pa," and then the request destination task number ND is set.
Set TK to "2'" and request destination event value NDET to "4"
By setting this, a stop request event is generated and an event occurrence monitor call is made. Furthermore, a play mode display request event is generated.

☆When the tempo setting operator is operated, first the time interval of the tempo clock is calculated and the second task time interval TCND is calculated.
[2], and then sets the request destination task number NDTK to "8" and the request destination event value NDET to "8" to generate a tempo display update request event and perform an event occurrence monitor call.

○Play task (Figure 7) The play task starts execution when a start request event occurs, reads performance data from the song data map and pattern map in a predetermined order, stores the performance data in the performance data FIFO, and issues an assignment request. Generate an event. Also, when a play task timer event occurs in the next pattern, it advances and is processed in the same way.

B-1 Set the variables etc. occupied by the play task to initial values, and set the second task timer counter value TCNE [21 to "'"
500” and the second task time interval TCND [2] is “
At the same time, the timer processing request flag for the task number "2" in the task management map is set to "1".

B-2 Request source task number N5TK and request source event value N
5ET is set to "2pa", an event wait monitor call is made, and when a start request event occurs, the process advances to the next step B-3.

B-3 Set pattern step number PSTN and song step number 5STN to "0", and set the waiting event value and the second event of the event occurrence flag for the task number whose task number is "°2" in the task management map. is set to “0′°.

Song step number 5S from B-4 song data map
The pattern number of TN is read and the pattern number is set as pattern number PNUF.

B-5 Pattern number PNUM indicates the end of the performance °“0
“Judge whether this pattern number PNUM
is "0pa", the process advances to step B-14.

B-6 If the pattern number PNUM is not "0°" in step B-5, the requesting task number N5TK is set to "2°" and the requesting event (iNsET
is set to "5'" and an event wait monitor call is made, and when either a stop request event or a play task timer event occurs, the next step B-71 is executed.
Proceed to.

B-7 It is determined whether the third event of the event occurrence flag for the task number "2°" in the task management map is "1". If this third event is "1", it means that a stop request event has occurred, and the process proceeds to step B-15.

B-8 In step B-7, if the third event of the event occurrence flag for the task number "2" in the task management map is not "1", the first event of this event occurrence flag is Since a timer event occurs at "1", first the waiting event value and the first event of the event occurrence flag for the task number whose task number in the task management map is "2" are set to "0". Next, a part number PATN indicating which part of the pattern is set to "θPA".

B-9 From the pattern map of the pattern number corresponding to pattern number PNUM, the part number is set to part number PATN, and the pattern step number is set to pattern step number PST.
The velocity corresponding to N is read out and the velocity is set as velocity NTVL.

It is determined whether B-10 velocity NTVL is "0". If this velocity NTVL is "0", this indicates that no sound will be produced, so step B-1
Proceed to step 2.

B-11 If the velocity NTVL is not "0" in the judgment in step B-10, first, from the pattern map of the pattern number corresponding to the pattern number PNUM, the tone numbers in the part number corresponding to the part number PATN are successively determined. The tone number is loaded into the performance data FIFO, and then the velocity NTVL is loaded into the performance data FIFO.Furthermore, the truncate prohibition flag at the pattern step number corresponding to the pattern step number PSTN of the part number corresponding to the part number PATN is read and the truncation is performed. Load the prohibition flag into the performance data FIFO.

B-12 Determine whether part number PATN is less than "7". If this part number PATN is not less than "7°", it means that all eight parts have been read, and the process advances to step B-16.

B-13 If the part number PATN is less than "7" in step B-12, increment the part number PATH by "1", prepare to read the next part, and proceed to step B-9. Return to

B-14 If the pattern number PNUM is "0°" in step B-5, the performance flag is set to "0°" to perform the performance end process, and the process returns to step B-2.

B-15 In step B-7, if the third event of the event occurrence flag for the task number "2" in the task management map is "l", the waiting event value and its third event are Event “
O” and return to step B-2.

B-16 If the part number PATN is not less than "7°" in step B-12, an assignment request event is generated. In other words, the request destination task number NDTK is set to "3°" and the request destination event value NDET is set to "3°". Set it to “1°” and make an event occurrence monitor call.

B-17 Determine whether the pattern step number PSTN is less than "15".This pattern step number P
If STN is not less than "15" and all pattern steps have been read out, the process advances to step B-19.

B-18 If the pattern step number PSTN is less than "15" in the determination in step B-17, the pattern step number PSTN is incremented, preparations are made to read the next pattern step, and the step is started. Return to B-6.

B-19 In step B-17, if the pattern step number PSTN is not less than "15" and all pattern steps have been read out, it is determined whether the song step number 5STN is less than "15". If this song step number 5STN is not less than 15 degrees and all song steps have been read out, the process advances to step B-21.

B-20 If the song step number 5STN is less than "15" in the judgment in step B-19,
The pattern step number PSTN is set to "'0", and the song step number 5STN is incremented by "1" to prepare for reading the next song step, and the process returns to step B-4.

B-21 If the pattern step number PSTN is not less than "15" in the judgment in step B-19, the playing flag is set to "0°" to perform a playing end process, and the process returns to step B-2.

○Main Assigner Task (Figure 8) When an assignment request event occurs, the Main Assigner Task unloads performance data from the performance data FIFO, and uses this performance data to generate musical tones corresponding to the assignment order set by the Preassigner Task, which will be described later. It writes to the channel management map and also generates a pronunciation request event.

The C-1 musical tone generation channel management map is cleared, and variables etc. occupied by the main assigner task are set to initial values. Note that the Nth assignment rank musical sound generation channel number M indicates the musical sound generation channel number of the Nth assignment rank.
ASS[N] to the corresponding "N(=0.1...., 15
)”, the target assignment rank TASN indicating the assignment rank of the assignment target is set to “0”, and the number of assignable musical tone generation channels GACN indicating the number of assignable musical tone generation channels is set to “0”.
is set to "16".

C-2 An event wait monitor call is made with the request source task number N5TK set to 3'' and the request source event value N5ET set to 1°. When an assignment request event occurs, the process proceeds to the next step C-3.

C-3 First, the task number on the task management map is "3'"
Set the waiting event value and the first event of the event occurrence flag for the task number to "0", and then set the main assigner processing SORAG MAEF to "1", which indicates that the main assigner is being processed with "1". .

C-4 Determine whether the target assignment order TASN is less than the number of allocatable musical tone generation channels GACN. If the number of allocatable musical tone generation channels is not less than GACN, there are no more musical tone generation channels to be allocated, and the process returns to step C-2.

C-5 In the judgment in step C-4, the target assignment order TMSN is the number of allocatable musical tone generation channels GAC
If it is less than N, it is determined whether the performance data FIFO is empty or not by comparing the write pointer and the continuous output pointer. If it is empty, processing of all the performance data in the performance data FIFO has been completed, so step C-
Return to 2.

C-6 If the performance data FIFO is not empty in the determination in step C-5, the tone color number, velocity, and truncate prohibition flag are sequentially removed from the performance data FIFO, and the tone color number NTTN, velocity NTVL, and truncate prohibition flag NTIF are set.

C-7 The assignment rank N indicating the musical tone generation channel to be assigned is the Nth assignment rank musical tone generation channel number MASSENJ of the target assignment rank TASN, in other words, the musical tone generation channel number MAS of the target assignment rank TASN.
S Set the processing wait flag of the musical tone generation channel number in the musical tone generation channel management map corresponding to [TMSN] to 1" indicating waiting for processing, and set the tone number to tone number NTTN.
The velocity is set to velocity NTVL, and the truncate prohibition flag is set to truncate prohibition flag NTIF.

C-8 By setting the request destination task number NDTK to "4" and the request destination event value NDET to "2", a sound generation request event is generated and an event order monitor call is made.

C-9 The target assignment order TASN is incremented by "l" to prepare for the next performance data assignment and return to step C-4.

- Pronunciation Task (Figure 9) The pronunciation task instructs the start of truncation if the previous pronunciation has not been completed in the tone generation channel that generates the new tone. Next, parameters related to musical tone generation are calculated and set.

Furthermore, if the pronunciation was or has ended,
Instructs the musical sound generation channel to produce a new sound.

D-1 Set the variables etc. occupied by the sound generation task to initial values, and clear the truncate end FIFO that stores the tone generation channel number that has been truncated;
The musical tone generation circuit 24 is initialized. Also, the fourth task timer counter value TCNE[4] and the fourth task time interval TC
ND[4] is set to "0", and the timer processing request flag for the task number "4" in the task management map is set to "1".

D-2 An event wait monitor call is made with the requester task number N5TK set to "4" and the requester event value N5ET set to "2". When the sound generation request event occurs, the process advances to the next step D-3.

D-3 First, set the waiting event value and the second event of the event occurrence flag to "0" for the task number whose task number is "4" in the task management map, and then set the musical sound generation channel to be processed. The target number GCTN shown is “°
Set to 0゛.

D-4 Determine whether the truncation flag in the musical tone generating channel number of the musical tone generating channel management map corresponding to the target number GCTN is "0" and the processing wait flag is "1" indicating waiting for processing. This truncate flag is not ``0'' or the processing waiting flag is ``1''.
If not, and no pronunciation processing is required, proceed to step D-
Proceed to step 7.

D-5 In the judgment in step D-4, the target number G
If the processing wait flag in the musical tone generation channel number of the musical tone generation channel management map corresponding to CTN is "1" and the truncation flag is "0", the envelope channel number of the envelope management map corresponding to the target number GCTN If the current envelope level at “
0°.

Determine whether or not. If the current envelope level is "0" and rapid attenuation processing is unnecessary, the process proceeds to step D-7.

D-6 In the judgment in step D-5, the target number G
If the current envelope level in the envelope channel number of the envelope management map corresponding to CTH is not "0", it indicates that truncation of the current sound generation level in the musical tone generation channel number of the musical tone generation channel management map corresponding to the target number GCTN is prohibited. ° "255", the current truncate prohibition flag is set to "1" indicating that truncation is prohibited, the truncate flag is set to "1" indicating that truncation is in progress, and rapid attenuation is instructed to the corresponding tone generating channel.

D-7 Determine whether the target number GCTN is less than "15'". If this target number GCTN is not less than 15' and all tone generation channels have been processed, the process advances to step D-9.

D-8 In the judgment in step D-7, the target number G
If CTN is less than "'15°", target number G
The CTN is incremented by 1°, preparations are made for processing the next musical tone generation channel, and the process returns to step D-4.

D-9 Set target number GCTN to "0°".

D-10 Determine whether or not the processing wait flag in the musical tone generation channel number of the musical tone generation channel management map corresponding to the target number GCTN is 1'', which indicates waiting for processing. If no processing is required, the process advances to step D-12.

D-11 In step D-10, if the processing wait flag for the musical tone generation channel number in the musical tone generation channel management map corresponding to the target number GCTN is "l", the process wait flag for the musical tone generation channel number corresponding to the target number GCTN is Various parameters related to musical tone generation and musical tone envelope generation are calculated from the tone number, velocity, and truncate prohibition flag at the musical tone generation channel number of the corresponding musical tone generation channel management map, and the various calculated parameters and the number of truncate prohibition steps are calculated. Let be the musical tone generation parameter group and the envelope property parameter group at the musical tone generation channel number of the corresponding musical tone generation channel management map.

D-12 Determine whether the target number GCTN is less than "15'". If the target number GCTN is not less than "15'" and all musical tone order channels have been processed, proceed to step D. Proceed to -14.

D-13 If the target number GCTN is less than "15" in the judgment in step D-12, the target number G
Increment CTN by “1” and proceed to step D-1.
Return to 0.

D-14 If the target number GCTN is not less than "15'" in the judgment in step D-12, the rapid decay incomplete flag is set to "1" and indicates that rapid decay has not been completed in any musical tone generation channel. TDNF and target number GCTN are set to "0".

D-15 Determine whether or not the processing wait flag in the musical tone generation channel number of the musical tone generation channel management map corresponding to the target number GCTN is "1++".If this processing wait flag is not "'l", Step D-18
Proceed to.

D-16 In the judgment in step D-15, if the processing wait flag for the musical sound generation channel number in the musical sound generation channel management map corresponding to the target number GCTN is "1" indicating waiting for processing, then the Determine whether or not the truncate flag is "1" indicating that truncation is in progress. If the truncate flag is "1", the musical sound generation channel to be assigned is not yet producing the previously assigned musical sound. Since the process has not been completed, the process advances to step D-20.

D-17 In the judgment in step D-16, the truncation flag in the musical tone generation channel number of the musical tone generation channel management map corresponding to the target number GCTN is “
If it is not °1°', first clear the number of truncate prohibited steps and the target value and rate of each step in the envelope channel number of the envelope management map corresponding to the target number GCTN, and then clear the number of truncate prohibited steps and the target value and rate of each step. The target value and rate of are calculated and set based on the envelope generation parameter group at the musical sound generation channel number of the musical sound generation channel management map corresponding to the target number GCTN, and then the current step number is set to "1" and the target value is set. Set the value and rate to the target value and rate of the first step and the current envelope level to "0". Also, target number GC
After resetting the musical sound generation channel corresponding to TN, the musical sound generation parameter group at the musical sound generation channel number of the musical sound generation channel management map corresponding to the musical sound generation channel and the target value and rate at the envelope channel number of the corresponding envelope management map are calculated. Forward. Furthermore, the current sound level at the musical sound generation channel number in the musical sound generation channel management map corresponding to the target number GCTN is set to "255", and the current truncate prohibition flag is set to "255".
1" and the processing wait flag is set to "0" to instruct the musical tone generating channel to start generating musical tones.

D-18 Determine whether the target number GCTN is less than "15". If this target number GCTN is not less than 15' and all musical tone generation channels have been processed, the process advances to step D-21.

D-19 If the target number GCTN is less than "15" in the judgment in step D-18, the target number G
Increment CTN by “1” and proceed to step D-1.
Return to 5.

D-20 In the judgment in step D-16, the truncation flag in the musical tone generation channel number of the musical tone generation channel management map corresponding to the target number GCTN is “
If the flag is 1', the rapid decay incomplete flag TDNF is set to 1' and the process proceeds to step D-18.

D-21 Determine whether or not the rapid decay incomplete flag TDNF is "°1''. This rapid decay incomplete flag TDNF
If it is not "'1°" and all sound generation processing has been completed, the process returns to step D-2.

D-22 If the rapid decay unfinished flag TDNF is "1°" in step D-21, the requesting task number N5TK is set to "'4" and the requesting event value N5ET is set to "'3". to perform an event wait monitor call. When either the pronunciation request event or the pronunciation task timer event occurs, the next step D
Proceed to -23.

D-23 Determine whether the second event of the event occurrence flag for the task number "4°" in the task management map is "1". This second event is "1". If so, the process returns to step D-3 because a sound generation request event has occurred.

D-24 In the judgment in step D-23, if the second event of the event occurrence flag for the task number whose task number in the task management map is °゛4゛ is not “1°”, the event occurrence flag for this task number Since the first event of ``1'' is the occurrence of a timer event, first, the waiting event value of the task number whose task number is ``4'' in the task management map and the first event of the event occurrence flag are set to ``0''. ”.

Next, the musical sound generation channel numbers that have been truncated are sequentially removed from the truncate end FIFO, and the truncation flag for the musical sound generation channel number in the musical sound generation channel management map corresponding to the musical sound generation channel number that has been removed is set to "0". . And step D-14
Return to

In addition, when instructing rapid attenuation in step D-6, the target value is set to "0°" and the rate is set to the rate for rapid attenuation, and then transferred.

O Briasina Task (FIG. 10) The Briasina Task begins execution when a Briasina Task timer event occurs, and updates the assignment order based on the current sound level.

Clears all of the E-1 envelope management map, sets variables etc. occupied by the Briasina task to initial values, and sets the fifth task timer counter value TC.
NE f 5 J is set to "5'" and the fifth task time interval TCND [5] is set to "4". Furthermore, the timer processing request flag for the task number whose task number is 5 in the task management map is set to "1".

E-2 Set the requester task number N5TK to "5' and the requester event value N5ET to "1" and perform an event wait monitor call. When the Briasina task timer event occurs, the next step E- Proceed to step 3.

E-3 Set the waiting event value and the first event of the event occurrence flag for the task number "5" in the task management map to "00".

E-4 Nth preassignment rank musical tone generation channel number PAS indicating the musical tone generation channel number of the Nth preassignment rank
“N”” corresponding to S[N] (=0゜1,...
15).

E-5 Set main assigner processing flag MAEF to "0".

Set to .

E-6 The current sound generation level for each musical sound generation channel number in the musical sound generation channel management map is determined by the musical sound generation channel number G.
Briasina sound level PLEV corresponding to N [GN
J, and the number of tone generation channels whose current sound generation level is "127" or lower is checked to determine the number of tone generation channels PACN that can be assigned to the Briasina task, indicating the number of tone generation channels that can be assigned in the Briasina task.

E-7 Bria Assignment Sound Generation Level PLEV [GNJ is rearranged in descending order, and the Nth preassignment rank tone generation channel number PASS[N] is also rearranged accordingly. In other words, Briasina pronunciation level PLEV
(GNJ is PLEV (3j<PLEVt5j<PLEV
(If the order is 21..., PASS[0]=3, PASS
S[1]=5, PASS[2]=2...

E-8 Locks the task and prohibits other tasks from interrupting it until the task lock is released.

E-9 Determine whether the main assigner processing flag MAEF is "0°". If the main assigner processing flag MAEF is "0°", step E-11
Proceed to.

E-10 If the main assigner processing flag MAEF is not 0°' in the judgment at step E-9,
Since the main assigner task was executed during the processing of steps E-6 and E-7, the process returns to step E-4 to release the task lock and re-sort.

E-11 If the determination in step E-9 is that Solag MAEF during main assigner processing is "0",
First, the Nth preassignment order musical sound generation channel number PASS[N] is sequentially set to the Nth assignment order musical sound generation channel number MASS[N], and then the target assignment order TASN is set to 0'''. Let the number of allocatable musical tone generation channels PACN be the number of allocatable musical tone generation channels GACN.

E-12 The task lock is released and the process returns to step E-2.

O Envelope Task (Figure 11) The envelope task starts execution when an envelope task timer event occurs, and sequentially updates the envelope task and current sound level of each envelope channel, and waits until the envelope level reaches the target value. Then, the target value and rate are updated to new target values and rates and transferred to the tone generation channel.

F-1 Set the variables etc. occupied by the envelope task to initial values, and set the 6th task queue counter value TC.
NE [6] to “4” and the 6th task time interval TC
Set ND[6] to °°4'°. Furthermore, the timer processing request flag for the task number "6" in the task management map is set to "1".

F-2 Set the requester task number N5TK to "6'' and the requester event value N5ET to "'1" and make an event wait monitor call. When the engeloop task timer event occurs, the next step Proceed to F-3.

The waiting event value and the first event of the event occurrence flag for the task number "6" in the F-3 task management map are set to "0", and the envelope processing target number ECTN is set to "'0". Set.

F-4 It is determined whether the truncation flag in the musical tone generation channel number of the musical tone generation channel management map corresponding to the envelope processing target number ECTN is "1". If the truncation flag is set to "III" and truncation is in progress, the envelope processing by the envelope task is unnecessary and the process proceeds to step F-12.

F-5 In step F-4, if the truncation flag for the musical sound generation channel number in the musical sound generation channel management map corresponding to the envelope processing target number ECTN is not "1°", the truncation flag corresponding to this envelope processing target number ECTN is determined. The current envelope level at the envelope channel number of the envelope management map is read and set as the envelope level ELEV.

F-6 First, the rate at the envelope channel number of the envelope management map corresponding to the envelope processing target number ECTN is added to the envelope level ELEV, and this value is set as the new envelope level ELEV. Next, this envelope level ELEV is set as the current envelope level at the envelope channel number.

F-7 It is determined whether the envelope level ELEV has reached the target value in the envelope channel number of the envelope management map corresponding to the envelope processing target number ECTN. If the target value has not been reached, there is no need to update the target value and rate, so step F
-Go to 10.

F-8 If the target value has been reached in the judgment in step F-7, the envelope processing target number ECT
The current step number in the envelope channel number of the envelope management map corresponding to N is incremented by "°1°".

F-9 Update the rate and target value for the envelope channel number of the envelope management map corresponding to the envelope processing target number ECTN to the rate and target value for the current step number for this envelope channel number, and update the rate and target value for the corresponding musical tone generation channel. Forward.

The current step number in the envelope channel number of the envelope management map corresponding to the F-10 envelope processing target number ECTN is compared with the number of truncation prohibited steps to determine whether the current step number is larger. If this current step number is not large and there are still large truncation prohibited steps, step F-
Step 12 follows, and the current sound level is maintained at "255".

F-11 If the current step number is large in the judgment in step F-10, the current sound level at the musical tone generation channel number in the musical tone generation channel management map corresponding to the envelope processing target number ECTH is updated to the envelope level ELEV, The current truncate prohibition flag in the musical tone ordering channel number of the musical tone generation channel management map corresponding to the envelope processing target number ECTN is set to "O".

F-12 envelope processing target number ECTN is “15”
Determine whether the value is less than or equal to the value. If this envelope processing target number ECTN is not less than ``15'' and processing for all musical tone generation channels has been completed, step F-
Return to 2.

F-13 The envelope processing target number ECTN is incremented by "1" and the process returns to step F-4.

Note that, as described above, detailed changes in the envelope level during truncation and between timer events are processed by the tone generation channel. The envelope level ELEV is represented by 16 bits, and the current sound level uses the upper 7 bits.

○Edit Task The edit task starts execution when an edit request event is issued and performs the corresponding processing. Note that since this is a known technique, only the main points will be explained.

G-1 Set variables etc. occupied by the edit task to initial values.

G-2 Make an event wait monitor call by setting the request source task number N5TK to ``7'' and the request source event value N5ET to 3FFH, which indicates that the edit task is waiting for all events. If this occurs, the process proceeds to the next step G-3.

G-3 Perform processing corresponding to the event occurrence flag in the task management map set to "1" as described above. For example, read the pattern used for performance from the ROM 22B and write it in the pattern map, or write the pattern in the pattern map. It sets or cancels the truncate prohibition flag, updates the setting of the pattern number PNUM used in the song data map, etc. Generates a display request event as necessary. When the process is completed, the process returns to step G2.

○Display Task The display task starts execution when a display request event occurs and performs the corresponding display process. Note that since this is a known technique, only the main points will be explained.

H-1 Set variables and the like occupied by the display task to initial values, and display the initial state.

Set the ISF under the H-2 timer included processing start flag to “
1'', set the requesting task number N5TK to "8", and setting the requesting event value N5ET to "405H", which indicates waiting for all events in the operator task, and performs an event wait monitor call. . When a display request event occurs, the process advances to the next step H-3.

H-3 Perform processing corresponding to the event occurrence flag set to "1'" as described above. For example, the performance status may be displayed. When the process is finished, step H
- Return to 2.

Next, the operation of the electronic musical instrument of this embodiment will be schematically explained.

i) When the power is turned on, first the monitor program is reset (routine ZA) and then (step ZA-1)
, ZA-2), and the task priorities in this embodiment include the operator task (routine A) and the play task (routine B).
), Main Assigner Task (Routine C), Pronunciation Task (Routine D), Brias Assigner Task (Routine E),
The envelope task (routine F), the edit task (routine G), and the display task (routine H) are sequentially initialized (steps A-1, -2, step B-).
1,-2, step C-1,-2, step D-1,-
2. Step E-1, -2, step F-1, -2, step G-1, -2, step H-1, -2). Next, perform the start operation.

ii) When the timer inclination occurs at predetermined time intervals, the timer inclination processing (routine ZD) of the monitor program is started.

■ Initially, because the timer event generation requirements of the repeater task are satisfied (steps ZD-1 to ZD-6),
The status of the task number for the operator task in the task management map is set to "OI+" indicating run (step ZD-14), and a timer event is generated.

Next, the operator task (routine A) is executed to generate an event (steps A-2 to A-4), and an event occurrence monitor call (routine ZC) is performed.

■ In the event occurrence monitor call (routine ZC) of the monitor program, the event corresponding to the event occurrence flag in the task number for the play task in the task management map is set to "1" (step ZC-1), and the status is set to ready. The control task (routine A) is restarted because the task priority of the control task is higher than the task priority of the play task (steps ZC-2, -3).
Step ZC-4), this operator task (routine A)
In step A-2), an event wait monitor call (routine ZB) is made while waiting for a timer event.

■ In the event wait monitor call (routine ZB) of the monitor program, since the timer event of the operator task has not yet occurred (step ZB-1), the status of the task number for the operator task on the task management map is set to wait. The task management map is set to "2" (step ZB-2) and the task management map is checked (step ZB-3). Examining this task management map, the task number of the highest priority task whose status is "1" indicating ready is the task number of the play task, so the status of this task number is set to "0" indicating run. to run the play task (routine B) (step ZB-4).

In this play task (routine B), the performance is set to start (steps B-2 to B-5), a timer event is waited for (step B-6), and an event wait monitor call is made (routine ZB).

■ In the monitor program's event wait monitor call (routine ZB), check whether a timer event has occurred (step ZB-1), and if a timer event has occurred, restart the play task (routine B). . In this play task (routine B), the performance data is sequentially read out (steps B6 to B-13), and when the performance data has been read out, an assignment request event is generated (step B-16), and an event occurrence monitor call (routine ZC).

■ In the event occurrence monitor call (routine ZC) of the monitor program, set the event corresponding to the event occurrence flag in the task number for the main assigner task in the task management map to "1" and (
Step ZC-1), the status is set to "1" indicating ready (Step ZC-2-3). Note that since the task priority of the play task is higher than the task priority of the main assigner task, the play task ( Routine B) is restarted (step ZC-4), and in this play task (routine B), a timer event wait is executed (step B-6), and an event wait monitor call (routine ZB) is executed.
).

(2) In the event wait monitor call (routine ZB) of the monitor program, check whether a timer event has occurred (step ZB-1). When we check the occurrence of this timer event, we find that the next timer event has not yet occurred, so we set the status of the task number for the play task in the task management map to ``°2'' indicating the weight (step ZB-2). ) Examine the task management map (step ZB-3). Examining this task management map reveals that the task number of the highest priority task whose status is "1" indicating ready is the task number of the main assigner task. Set the status of this task number to "0" indicating run and make the main assigner task (routine C) run (step ZB-4)
. In this main assigner task (routine C), performance data is written to the musical tone generation channel management map (
Steps C-2 to C-7). When writing to this musical tone generation channel management map, it is based on the assignment order and is written to musical tone generation channels whose current sound generation level is "127" or lower.

Next, generate a sound request event (Stella 7'C-8
), performs an event occurrence monitor call (routine ZC).

■ In the event occurrence monitor call (routine ZC) of the monitor program, the event corresponding to the sound generation request event of the event occurrence flag in the task number for the sound generation task of the task management map is set to "1" (step ZC-1), The status is set to "1" indicating ready (steps ZC-2, -3). In addition,
The main assigner task (
Routine C) is restarted (step ZC4), and in this main assigner task (routine C), performance data is sequentially written to the musical tone generation channel management map, and when the performance data writing process is completed (step C-4).
-5) Waiting for a timer event In step C2), an event wait monitor call (routine ZB) is made.

(2) In the event wait monitor call (routine ZB) of the monitor program, check whether an assignment request event has occurred (step ZB-1). When we check the occurrence of this assignment request event, we find that the next assignment request event has not yet occurred, so the status of the task number for the main assigner task in the task management map is set to "2" indicating the weight (step ZB-2) Examine the task management map (Step ZB
3). Examining this task management map, the task number of the highest priority task whose status is "1°" indicating ready is the task number of the pronunciation task, so the status of this task number is set to "0" indicating run. and run the pronunciation task (routine D) (step ZB-
4). In this sound generation task (routine D), various parameters related to musical sound generation, such as the number of steps in which truncation is prohibited, are calculated and set based on the performance data written in the musical sound generation channel management map, and the start of sound generation is instructed (step D-11 to D-17). Note that the current sound level is set to "255". Next, it waits for a sound generation request event (step D-2) and makes an event occurrence monitor call (routine ZB).

(2) In the event wait monitor call (routine ZB) of the monitor program, it is checked whether a sound generation request event has occurred (step ZB-1). When we check the occurrence of this pronunciation request event, we find that the next pronunciation request event has not occurred yet, so the status of the task number for the pronunciation task in the task management map is set to ``°2'' indicating the weight (step ZB -2) Examine the task management map (step ZB-3). Examine this task management map and go to sleep if the status of all task numbers is "2" indicating weight.

ii) When the corresponding timer event occurs, the Briassigner task (routine E) updates the assignment order based on the current sound level in the tone generation channel management map (steps E-3 to E-12), and then Waits for a timer event (step E-2).

iv) When the corresponding timer event occurs, the envelope task (routine F) updates the current sound level in the musical tone generation channel management map and the envelope level in the envelope management map based on the musical tone generation channel management map and the envelope management map. (Steps F-3 to F-9). Also, when the envelope step progresses and exceeds the number of truncate prohibition steps, the current sound level is updated to a value corresponding to the current envelope level that is "127" or less, and the process waits for the next tie 1 event (step F- 2). Therefore, truncation of the tone generation channel is prohibited during the period set corresponding to the truncation prohibition flag of the performance data.

Next, an explanation will be given of the operation in this embodiment of prohibiting truncation of the musical tone generating channel that is currently being generated when a new musical tone is to be assigned to the musical tone generating channel.

Tone generation channels whose current sound generation level is "127" or lower are truncated based on the assignment order and new performance data is assigned. When allocating this performance data,
The number of truncate prohibition steps is set based on the truncate prohibition flag of the performance data, and the current sound level is set to "255".

Next, when the envelope changes and the current step number exceeds the number of truncate prohibited steps, the current sound level is set to “1”.
The current envelope level is set to 27''' or less.In the Briasina task, the truncation order is set in ascending order of the current sound generation level based on the current sound generation level.

Therefore, truncation of the musical sound generation channel is prohibited over a period of the number of truncate prohibition steps set corresponding to the truncation prohibition flag of the performance data.

In this embodiment, the number of steps for which truncation is prohibited is set in accordance with the timbre, but it may also be set or weighted based on velocity or pitch. Furthermore, when the sound consists of a plurality of constituent sounds (partials), it is preferable to give weights corresponding to each constituent sound. Alternatively, the number of steps may be directly specified.

In this embodiment, the truncate prohibition flag is set for each individual note, but it may be set for each tone or constituent note.

In the case of manual performance using a drum pad or the like, a foot switch or the like may be provided, and the truncation prohibition flag for a specific pad or tone may be set by operating the foot switch or the like.

[Second Embodiment] When suppressing truncation in a predetermined period based on the priority of one pronunciation Next, this embodiment will be explained in detail. Only the parts that are different from the first embodiment will be explained, and the explanation of the overlapping parts will be omitted.

First, in the ROM 22B of the microcomputer 22, in addition to the number of truncate prohibited steps, in this embodiment, in addition to the number of truncate prohibited steps, corresponding to the number of truncate prohibited steps in the first embodiment when the truncate prohibited flag is "0" and "1", respectively. The number of truncate inhibition steps indicating the number of steps in the inhibition section is stored.The number of truncate inhibition steps in this embodiment is the same as the number of truncation inhibition steps in the first embodiment where the truncate inhibition flag is "0". The number of truncate inhibition steps in the first example approximately corresponds to the number of truncation inhibition steps in the first embodiment in which the truncate inhibition flag is "1".

Regarding the pattern map and musical sound generation channel management map set in the working area of the RAM 22C of the microcomputer 22, in this embodiment, the area of the truncation prohibition flag in the first embodiment is the sound generation priority indicating the priority of sound generation. The area is NTPL (>1). Note that this sound generation priority NTPL is processed in place of the truncate prohibition flag NTIF in the first embodiment in step B-11, steps C-6, C-7, and step D-11. Further, the envelope management map is provided with an area for storing the number of truncation suppression steps.

Next, only the differences from the first embodiment in each routine will be explained.

Main Assigner Task (Routine C) In this embodiment, the next step C-6° is inserted between step C-6 and step C-7.

C-6 "The attack level is calculated from the tone number NTTN and the velocity NTVL, and the value obtained by multiplying this attack level by the sound generation priority NTPL and the assignment rank N indicating the musical tone generation channel to be assigned is the target assignment rank T.
ASN Nth assignment order musical sound generation channel number MAS
S[N], in other words, the current sound generation level of the musical tone generating channel number in the musical tone generating channel management map corresponding to the musical tone generating channel number MASS[TMSN] of the target assignment order TMSN is compared. If this current sound level is less than the value obtained by multiplying the attack level by the sound generation priority NTPL, proceed to step C-7, and if not, proceed to steps C-7 to C-9 to give priority to the current sound sound.
The process returns to step C-4 without performing the above process.

- Sound generation task (routine D) In this embodiment, regarding step D-11, in addition to the number of truncation prohibition steps, the number of truncation suppression steps is also read out and made into a part of the envelope generation parameter group.

Regarding step D-17, the envelope management map corresponding to the target number GCTN includes the number of truncation inhibition steps, the target value and rate of each step, and the musical sound generation channel management map corresponding to the target number GCTN. It is calculated and set based on the envelope generation parameter group for the tone generation channel number of the map.

O Preasiner Task (Routine E) In this embodiment, regarding step E-6, the number of musical tone generation channels PAC that can be assigned to the preassigner, which indicates the number of musical tone generation channels that can be assigned in the preassigner task, is
N is changed to the number of tone generation channels whose current sound generation level is "254" or less.

O envelope task (routine F) In this embodiment, step F-10 and step F-
11, the next step F-10' is inserted.

F-10" The current step number in the envelope channel number of the envelope management map corresponding to the envelope processing target number ECTN is compared with the truncation suppression step number to determine whether the current step number is larger.

If this current step number is not large and it is still a truncate suppression step, the current sound generation level is updated to a value obtained by multiplying the envelope level ELEV by the sound generation priority NTPL. If this multiplied value is greater than or equal to "254", it is determined as "254" and the process proceeds to step F-12. If the current step number is large and the truncation suppression step has been completed, the process advances to step F-11.

O edit task (routine C) In this embodiment, setting of the truncate prohibition flag,
Instead of canceling, the sound generation priority NTPL is changed.

In the above-described embodiment, when allocating, the pronunciation priority NTPL is set to the planned attack level of the new sound.
The current sound generation level of the musical tone generation channel to which the new tone is to be assigned is compared with the current sound generation level of the tone generation channel to which the new tone is to be assigned.If the new tone value is large, the new tone is assigned, and if it is not, the new tone assignment is abandoned.

This assigned tone is not truncated during the truncate prohibition step. During the truncate suppression step, truncation is suppressed by multiplying the actual envelope level by the pronunciation priority NTPL.

In this embodiment, the pronunciation priority NTPL is kept constant during the truncate suppression step, but it may be changed as the period elapses. Furthermore, a truncate suppression degree indicating the degree of truncate suppression during the truncate suppression period is added to the performance data, and the truncate suppression degree is used instead of the pronunciation priority level NTPL when calculating the current sound generation level in step F-10'. It's okay. In this embodiment, a truncation prohibition period is provided, but it may be simply suppressed. Note that if the envelope has not yet reached the attack point, the current sound generation level is determined by multiplying the attack level by the sound generation priority NTPL. Furthermore, even if there is a shortage of musical sound generation channels to be allocated, it is possible to set a priority sound generation flag or a sound generation order indicating the degree of priority sound generation for sounds that should be generated without fail or with priority, and to allocate them to musical sound generation channels based on that. . For example, although the performance data is assigned to the tone generation channels sequentially starting from the first part, the assignment may be made starting from the part for which the sound generation priority flag is set or the part having the highest sound generation order.

In the first and second embodiments, internal performance data is used, but performance data may also be supplied from an external automatic rhythm performance device, electronic drum pad, or the like.

In the first and second embodiments, an automatic rhythm performance device has been described, but the present invention may be applied to a so-called synthesizer, an electronic piano, etc., or an automatic performance device that targets these as well, with appropriate modifications.

In the first and second embodiments, the Brias Assigner task is executed at predetermined time intervals in consideration of the case where performance data is received from the outside, and the Main Assigner task is executed based on the latest assignment order. ing. By the way, in automatic performance, since the performance data for the next sound to be produced is already stored, the generation time of the performance data can be detected in advance. Therefore, an execution command for the Briasina task may be generated using an automatic performance function or the like prior to the performance data, and the Briasina task may be executed.

Although the first and second embodiments show examples using multi-task processing, they may also be implemented using single-task processing. In this case, for example, the processing in the Briasina task may be executed based on the main routine or included items such as timer included items.

In the first and second embodiments, the assignment order is based on the envelope level, but if there is a musical sound generation channel with the same tone that has a lower assignment order, in other words, it is difficult to be truncated, the assignment order of the musical sound generation channel is set higher, In other words, it may be easier to truncate. For example, after the processing in step E7 of the Briasigner task processing routine, the following processes ① and ② may be added in order of Briassigner ranking.

■i) Check the briasaina pronunciation level PLEV [GN] of the relevant musical tone ordering channel, and check the briasaina pronunciation level P
LEν[GN] is "127" or less, and ii) Briasina sound generation level PLEV [GN] is the Briasina sound generation level PLEV [GN] of the relevant musical tone generation channel.
Sequentially examine the tone numbers of larger musical tone generation channels,
If there is a musical tone generation channel to which the same tone color number as that of the musical tone generation channel is assigned, the Briasina sound generation level PLE of the musical tone generation channel is
Change the setting of V [GN] to 1/10 of that value.

(2) Next, as in step E-7, the order is rearranged based on the briasaina sound generation level PLEV [GN] and the briasain order is reset.

Note that when applied to a synthesizer or the like, the same pitch is added to the same pitch.

In the first and second embodiments, the assignment order is based on the envelope level < the current sound level, but it may also be based on the remaining sound volume as shown in JP-A-1-169496, etc. . Further, although the current sound generation level is changed to a value representing truncate prohibition in order to exclude musical tone generation channels for which truncation is prohibited, processing may be performed using the current truncate prohibition flag.

In the first and second embodiments, the processing was performed based on the number of steps, but the processing may be performed based on the number of steps, for example, by setting a time.

Note that this may be displayed if there is a shortage of musical tone generation channels to be assigned in the main assigner task.

[Brief explanation of the drawing]

FIG. 1 is a block diagram corresponding to the configuration of the present invention described in the claims, and FIGS. 2 to 11 are drawings for explaining a first embodiment of the electronic musical instrument according to the present invention. Figure 2 is a schematic diagram, and Figures 3 (A) to (E) are configuration diagrams of the song data map, pattern map, task management map, musical sound generation channel management map, and envelope management map set in the RAM. , FIGS. 4 and 5 are flowcharts of the reset routine, event wait monitor call routine, event occurrence monitor call routine, and timer included processing routine, respectively. FIGS. 6 to 11 are flowcharts of the control task and play task, respectively. , a main assigner task, a pronunciation task, a briar assigner task, and an envelope task. Storage means Setting means Changing means Truncation means Operation panel Bus microcomputer PU OM AM Timer display circuit Tone generation circuit Amplifier Speaker

Claims (1)

[Scope of Claims] 1(a) A storage means capable of storing truncate information regarding truncation prohibition/permission corresponding to each musical sound generation channel; (b) A musical sound corresponding to the performance information based on the performance information is stored in this storage means. (c) a setting means for storing and setting truncate information in which truncation is prohibited corresponding to an assigned musical sound generation channel; (c) setting means to store and set truncate information in which truncation is prohibited, which is stored in the storage means, in accordance with the progress of sound generation of musical tones of the corresponding musical sound generation channel; Therefore, the present invention is characterized by comprising a changing means for changing the memory to truncate information indicating truncation permission, and (d) truncation means for truncating a musical sound generation channel in which truncation information indicating truncation permission is stored in the storage means at the time of truncation. An electronic musical instrument.