JPS59198499A - Sequencer with correction start processing means for electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sequencer for an electronic musical instrument, and particularly relates to a sequencer for an electronic musical instrument, and in particular, the present invention relates to a sequencer for an electronic musical instrument. Following the flow, a series of key event data is supplied to the sequencer from an external device such as a keyboard device during later real-time performance, and the beginning of the part where corrections are to be made to the flow of musical tones due to the above-mentioned light performance. When the playback process reaches the address assigned to the key event data representing the musical tone (hereinafter referred to as the correction start address),
The sequencer is automatically switched to the storage mode, and thereby the series of key event data from the subsequent real-time performance is stored at the address assigned to the series of key event data representing the musical tone of the part to be modified. When performing a modified performance to store the above-mentioned modification start address number, at the time when the data should be stored, that is, at the time of switching from the playback mode to the storage mode, the key event data representing the musical tone of the previous performance, Since there is no relationship between the key event data and the key event data representing the musical tones produced by the subsequent real-time performance, a modification start process is executed at the time of the switching in order to eliminate any inconvenience in musical expression. This relates to improvements that have been made.

As shown in FIG. 1, a sequencer B, which is an object of the present invention, is typically connected between a keyboard device A and a sound source device C, and the sequencer has A series of data input from the keyboard device A corresponding to the key pressed, more specifically, as shown in FIG. The key code is a binary code representing the status, a numerical value corresponding to the pitch of the pressed key, and, if necessary, a numerical value corresponding to the key pressing speed is represented in a binary code. Key event data configured to express one key event (occurrence of a key press or key release for a specific key) is supplied by adding a dynamic code (omitted in FIG. 2) consisting of the following.

Upon receiving the series of key event data, sequencer B
In storage mode, measures the time elapsed until the next subsequent key event, adds an event interval code that represents the measured value in binary code to each key event data, and stores the stored data. While forming the data, it is sequentially stored in the memory, while in the playback mode, while decoding the event interval code 0 part of each stored data,
Each time the time elapses until the next event, the stored data is sequentially read from the memory and the status and key code parts (and the dynamic code, if added) are output sequentially. It is.

In FIG. 2, the subsequent sound source device C receives the key event data from the soak enhancer B, and receives a musical tone signal with a pitch (and volume if a dynamic code is added) specified by the data. Each time the data is supplied, the supply is started or stopped to a sounding device such as a speaker, thereby obtaining a musical expression in the form of musical tones from the sounding device.

In the conventional sequencer B, as shown in FIG. 3, in the playback mode, the modification start address is set along the flow of musical tones to be played according to a series of key event data from the previous performance output from the sequencer. X+
Address time tn2 slightly before the time tn (hereinafter referred to as modification start address time) at which the data is read from 1
Real-time key operations starting from f! Panel device A
While inputting a series of key event data to the sequencer from
, Xn+1 . The relationship between the key event I/data stored in the sequencer and the pressed/released state in the vicinity of the correction start address Xn is shown in FIGS. 3 and 4 (Al-(1=7+) ^The explanation is as follows.

Now, suppose that from the address X11-2 before the modification start address Xn to the address X after the modification address
A series of musical tones represented by a series of key event data read out in playback mode by n+1 are as follows:
Occurs at address times in2 to in+1, respectively,
Let us assume that the sound generation/silence state changes as shown in FIG. 3(B).

Specifically, at address time tn-2, key event data representing an off event (FIG. 3(B) a) is read, so until the next address time tn-1,
It remains in the muted state (Fig. 3 (I3) l)).

On the other hand, at this point in time 1n, the key event data representing the on event (FIG. 3 (B) C) is read out, so the sound generation state remains until the next address point in (FIG. 3). (13) d).

Similarly, the sound is muted between address times tn and tnl-1 (FIG. 3(B)e).

While operating in this playback mode, while listening to the played musical tone, start key operations with reference to an arbitrary address X in the playback area ahead of the correction start address Xn, and adjust the flow of the musical tone being played back. At the same time, the key operation continues until the address time t is reached, as shown in 3+4 (C). -2
~1n-, the key depression/mute state approximately corresponds to the sound generation/silence state (Fig. 3 (B)) represented by the key event data during playback.
Key event data representing the key release state is input, and after the correction start address time tn, the sequencer B is switched to the storage mode, and then the key event data is changed to the key press state (FIG. 3 (C) f) between the address time points 1n-jn+1. Let's assume that you continue to enter key event data that will stay there.

In this case, in the conventional sequencer, the key event data representing the first off event (Fig. 3 (C) g) input after the correction start address time tn is stored at the correction start address Xn, so that after the correction start address time tn As shown in Figure 3 (L), when the key 1 vent data is played again, the off event (Figure 3 (D)) occurs at the correction start address time tn. )
h) occurs, and thereafter the sound is muted (Fig. 3 (D) i)
Transition to. As a result, between the correction start address time tn and the address time tn, the key press/release state (Fig. 3 (C) f) represented by the key event data input during the 11th day regular performance and the key release state after the direct pressure performance are determined. Sound generation/silence state represented by the key event data issued (Figure 3 (J)) i
) was inconvenient.

On the other hand, this time, the sound generation/silence state shown in FIG. 3 (Bl) changes as shown in FIG. 4 (Bl), and the key press/release state shown in FIG. Assume that the state changes as shown in Figure 4 (C1).In this case,
At the time of correction performance, on event - (41a(C)a) is stored in correction start address Xn, so when playing again after correction performance, address correction start time tn is stored.
and address time tn, the key operation remains in the sounding state (Fig. 4 (D) b), and as a result, the key operation changes to the key release state during this period (Fig. 4 (C) C). The previous Sea 1. In the ENSA, there is a drawback that during a corrected performance, the reproduced musical sound near the correction start address time tn does not faithfully match the key operations for a correct performance, resulting in an unnatural musical expression.

The purpose of the present invention is to solve the problem of unnatural musical expression when performing corrections using a sequencer for an electronic musical instrument based on the above-mentioned prior art. Event management table means for storing the key release state at each time point, pronunciation management table means for storing the sound generation/silence state represented by the key event data output from the sequencer at each time point, and both table means. Based on the correction start address, search for keys whose pressed/released state does not correspond to the on/off state of the musical tone that should be played, and determine the pressed/released state of the corresponding key. By providing a correction start processing means that sequentially stores the correction start address in the memory at addresses after the correction start address, the above-mentioned drawbacks are eliminated, and even when performing corrections, a natural performance expression can be achieved near the time of the correction start address. The present invention aims to provide a sequencer for electronic musical instruments.

The structure of the present invention in accordance with the above object is that, as shown in FIG. 5, in the playback mode, the memory means 1
A series of key event data stored in each address of the key event data is sequentially read out from each address of the memory means designated by the address counter 2 for each event interval period between each key event data, and In response to event data, the pronunciation management table means 3 (hereinafter referred to as table B) stores the pronunciation/silence states of all keys at each point in time, and when performing corrections, an external device such as keyboard device A In response to key event data input for each key event from , the modification start control means 5 detects that the contents of the address counter 5 have reached the preset modification start address The correction start processing means 6 searches both tables ASB for all the keys, and searches the tables ASB for the keys that correspond to the pressed state, and for f-f/l/
B. Each of the key event data corresponding to the muted state is set as key event data representing a key pressed state, and table A corresponds to a key released state, and table B corresponds to a sound producing state. Each of the key event data relating to the corresponding key is stored as key event data representing a key release state in the address after the correction start address of the memory means 1, and thereby the external device at the correction start address time tn is stored. The key event data input from A is not displayed and the key is pressed/released (Figure 3 (C)
) j, Figure 4 (C) d) is stored as a key event that occurred at the time tn (Figure 3 (Fi)).
k, Fig. 4 (g) e), and the key press/release state (third
Figure ((, 'l f, Figure 4 (CI C) and the key press/release (sound generation/mute) state represented by the key event data output by replaying after corrected performance (Figure 3 (E) J.
The gist of this is to eliminate the difference with FIG. 4(E)f) near the correction start time tn.

Next, the present invention will be described in detail as follows with reference to the drawings from FIG. 6 onwards.

In FIG. 6, the sequencer B includes an arithmetic processing section 7 consisting of a microprocessor (CPU), a memory means 1 mutually connected to the microprocessor, an event management table means 4, that is, a table A, and a pronunciation management It consists of table means 3, ie, table B, address counter 2 as address designation means, and correction start address setter 2a. The table A, the table B, the modification start control means 5, and the modification start processing means 6 are function realizing means realized by executing a program in the arithmetic processing unit 7, respectively, and the functions are shown in FIGS. 7 and 81. 〆1
The explanation will be as follows with reference to the flowchart.

When performing a corrected performance, first, when the arithmetic processing unit 7 starts operating (Fig. 1a), it immediately sets the initial value Xo in the address counter 2, clears both tables ASB, and starts the music. A performance clock is detected as a temporal reference of progress (FIG. 7c), and a performance counter is decremented each time the clock is detected (FIG. 7g). It is determined whether the content of the counter has become 0 (Fig. 7e), and the process of decrementing the performance counter (Fig. 7 ce) continues until the determination result becomes yJas. ' As will become clear in the processing described later (Fig. 7g), the performance counter is preset with an event interval code that represents the elapsed time from the key event specified by the immediately preceding key event data. The above process (Fig. 7c)
-e) forms the event interval.

When the above judgment result (Fig. 7 e) becomes YES, data containing the next key event data is read out from the address specified by the address counter 2 of the memory means 1 (Fig. 7 f), and the event interval is After presetting the chord part in the performance counter (FIG. 7g), the address counter 2 is incremented to designate the next address in the memory means 1 (FIG. 7h).

Next, the arithmetic processing unit 6 determines whether it is an on event or an off event, that is, whether the transition is to a sound generation state or a transition to a mute state, based on the status portion of the read key event data. Figure g), when the judgment result is an on event, "1" indicating the sound generation state is assigned to the address of table B assigned to the key corresponding to the pitch represented by the key code part of the key event data.
(Fig. 1)).

At this time, if the above judgment result (Fig. 7g) is an off event, "0" representing the muted state is similarly stored in the address assigned to that key in table B (the γth
Figure k).

(Thus, the above-mentioned processing (FIG. 7, 1 to k0) realizes the sound generation management table means 3 that represents the sound generation/silence state of the key at this point in time.

Subsequently, the arithmetic processing unit 7 performs the processing described below (Fig. 3 n-q).
Search table A formed by , and perform the above process (
The state stored in the address in table A assigned to the key in FIG.
), if the result of the determination is that the key is in a released state, key event data related to that key is output to the subsequent sound source device C (FIG. 7 In), and then the process moves to the next step. on the other hand,
If the result of the determination (FIG. 7, 1) is that the key is pressed, the process moves to the next step without executing any process.

Subsequently, the processing unit T determines whether or not the key event data is input manually from the keyboard device A (Fig. T n), and if the data is input, the processing unit T determines whether or not the key event data is manually input. , it is necessary to judge whether it is an on event or an off event (Fig. 7g), and if the judgment result is an on event, the key that corresponds to the pitch represented by the key code part of the key event data entered manually is assigned. ``1'' representing the key press state is stored in the address of the table (FIG. T p).

At this time, if the above judgment result (stone in Figure 7) is an off event, "0" representing the key release state is stored in the address of table A assigned to that key in the same way (
Figure Tq).

In this manner, the above-mentioned processing (FIGS. n-q) realizes the event management table means 4 that represents the pressed and released states of the key at this point in time.

And, such event management processing (Figure 1 n to q) is as follows:
At the timing of the performance clock, it is executed after a series of processes (7th ill c to In) including the pronunciation management process are executed, but in between the performance clocks, the above process (7th ill
1 to kn) are not executed (, the process in Figure TC directly shifts to the process in Figure 7n), so the event management process (in the event management process in response to randomly input key event data) (Figures n-q) The substantial processing speed of subsequent processing can be increased.

Subsequently, the arithmetic processing unit 7 performs the above-mentioned processing (FIG. 7 1-k)
Search table B formed by , and determine the state stored in the address of table B assigned to that key, that is, the sounding/silencing state of that key at this point. , when the judgment result is that the sound is muted, the cow-event data related to that key is output to the subsequent sound source device C (Fig. When (r in Fig. γ) is in the sounding state, the process moves to the next step without executing any process. When the key event data is not input, the determination result in FIG. 7n becomes NO, and the subsequent processing (FIG. 7 o-s) is not executed.

In other words, among the series of processes described above, the process shown in FIG. 71 and the process shown in FIG.
When playing overlappingly with a later device, for musical tones of the same pitch, the off event that appears first in one of the two performances is preferentially realized, and the second half of the other performance is muted. Since there is an inconvenience of storing it away, this process is necessary to solve this problem.

Subsequently, in the next step, it is determined whether the address counter 2 has incremented to the value of the modification start address It is determined whether or not all of the stored data has been read out (t in Figure T), and while the determination result is No, the above series of processes (c to t in Figure 6) are repeatedly executed to read out the memory means. Each time new stored data is read from 1 (FIG. 7f), the address counter 2 is incremented to specify the next address of the memory means, and the modification start address X! When reaching ``I'', the determination result (t in Figure T) becomes YES, so the process proceeds to the next step, and the sequencer B shifts from the reproduction mode to the storage mode.

Thus, the modification starting means 5 is realized by the above processing (FIG. 7t).

Next, the arithmetic processing unit I that has shifted to the playback mode first performs the following steps.
After clearing the performance counter (Figure 8a), search table A for the first key (Figure 8b), and if that key is in the depressed state, then search table B for the same key. 8C), and when the state of the key is in the sounding state, at this point, the stored data of the correction start address Xn specified by the address counter 2 is not updated (the address counter 2 is incremented to designate the next address X daily in the memory means 1 (FIG. 8d).

At this time, if the search result of table B (FIG. 8C) is the muted state, the content of the performance counter (the content of the counter is set to 0 in the process of FIG. 8a) is stored in the correction start address Xn of the memory means 1. ) is stored as an event interval code representing 0 (Fig. 8e), and key event data representing that the first key is in the pressed state is stored at the address 81df), the stored data at the address Xn is updated, and then the next address X11 is designated (FIG. 8d).

On the other hand, if the search result for the table (Fig. 8b) is that the key is in the released state, then table B is searched for the same key, that is, the first key (Fig. 8g), and the state of that key is When the sound is being generated, the contents of the performance counter and the key indicating that the first key is released are displayed as described above.
-Event date and -event are recorded in the correction start address Xn1.
By updating the stored data at the address Xn (FIG. 8, i), the next address X daily is specified (FIG. 8, d).

At this time, when the search result of table B (No. 81g) is a muted state, the next address xn+ is designated without updating the stored data of the correction start address Xn (FIG. 8d).

Next, the processing unit 7 determines whether the searches of both tables A and H are performed for all keys (see FIG. 8), and sequentially searches for all keys until all keys are searched. Specify the next key (Fig. 8 k) and search both tables (
FIGS. 8b, c, g) [/while each of the stored data representing the key-pressing state of the key corresponding to the key-pressing state in table A and the key corresponding to the mute state in table B,
Address counters following the correction start address Xn are stored with each piece of stored data representing a key release state for a key that corresponds to the key release state in table A and corresponds to a sound generation state in table B. After repeatedly executing the process of sequentially updating the stored data (Fig. 8 e, h, d), proceed to the next step and start the storage process of the subsequent key event data input from the keyboard device A. do.

(Thus, the above-mentioned processing (FIG. 8 a-k) realizes the modification start processing means 6.

Subsequently, when storing subsequent key event data, the arithmetic processing unit 7 detects the performance clock (Fig. 8 m,
Each time the clock arrives, the performance counter is incremented (Fig. 8 m), and the above processing (Fig. 8 1-n) is continued until new key event data is input from the keyboard device A (Fig. 8 m). ) by repeatedly executing
Create an event interval code in the execution counter.

Then, when new key event data is input, at this point, the content of the performance counter, that is, the event interval code is recorded at the address of the memory means 1 specified by the address counter 2 (Fig. ), the memory data of the address is updated by storing the new key event data at the address (Fig. 8 p), and then the performance counter is cleared (Fig. 8 q).
, prepare for forming an event interval code for the next input key event data.

The counter is incremented until the address specified by the address counter reaches the final address xXInax (Fig. 8 r), and subsequent addresses are sequentially specified in the calculation process (Fig. 8 1-q). (S) in FIG. 8), it is executed repeatedly and stops at the final address (M in FIG. 8).

Nao, in the above embodiment, it is assumed that the key event data from the subsequent performance during the corrected performance is input to the sequencer from the keyboard device as an external device, that is, the subsequent performance is a real-time performance. As explained above, it is not limited to this, and if the later performance is also an offline performance, ζ4 is the case where the key event data that is extracted from another sequencer as an external device is transferred to the soak encoder of the embodiment. Just enter it for .

As described above, according to the present invention, there is provided an event management table means for storing key press/release states of all keys at each time based on input key event data, and key event data to be output. Based on the above, an issuance management table means for storing the sound generation/silence state of all keys at each point in time, and 1 and a positive start address Xn,
Switch the sequencer from playback mode to storage mode 1σ positive start 1t; At the time of the IJ control means and the correction start address, search both the table means with one key each and press the key with the event management table means. Exposure to the condition,
(c) The pronunciation management table means sets each of the key event data relating to the key corresponding to the muted state as key event data representing a key press state, and the event management table means further sets each piece of key event data relating to a key corresponding to a key release state as key event data representing a key release state; Modification start processing means for sequentially storing each piece of key event data relating to a key corresponding to a sound generation state in an address subsequent to the modification start address as key event data representing a key release state in the sound production 1 management table means. Modify i by adding
The key event data input by j2 'rQ is not displayed and the key is pressed/1 key state (Fig. 3(c) f, 4th Bi
te) C) and the pressed key/1qlt key (sound/silence) state represented by the key event data output by replaying after the corrected performance (Fig. 3 (E) f, 41xl (r
”, l f ) are made to match near the 1:<compression/closing start time tn, so that during correction performance,
A series of key event data that is completely independent of the series of key event data stored in the sequencer from the previous performance is updated in the sequencer during the subsequent performance.1. Even if α is set, the reproduced musical tone near the time of starting the correction will faithfully follow the key operations for the correction performance, so there is an excellent effect that a natural musical expression can be obtained.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the relationship between the sequencer and peripheral devices, FIG. 2 is an explanatory diagram showing the structure of memory data and key event data stored in the memory of the sequencer, and FIG.
4 shows the address (A,) of the memory means, the sound generation/silence state (B) represented by the key event data read from the memory means in the playback mode, and the IIr positive start address Xn of the memory means in the storage mode. Key press/release status (key event data stored in subsequent addresses)
C), the sound production/silence state (D) represented by the key event data read from the memory means upon replay after 11 full performance springs, and the sound production/silence state (D) represented by the key event data read from the memory means, and the sound generation/silence state (D) during the normal performance of F" in the sequencer that is an embodiment of the present invention. The time charts shown in FIGS. 51 to 8 in comparison with the key press/key release pattern f3 (E) of the key event data recorded in the memory means relate to the embodiment of the present invention. The figure is a functional block diagram (complaint correspondence diagram), FIG. 6 is an explanatory diagram of the hardware configuration, and FIGS. 7 and 8 are flowcharts of the program executed by the arithmetic processing unit 6.A ... Keyboard bag fi B ... Sequencer C ... Sound source device J) ... Sound generator 1 ... Memory means 2 - Address counter 2a... Correction start address setter 3...
・Pronunciation management table means (table B) 4...
Event management table means (table A) 5...
・Modification start control means 6...Modification start processing means γ...Arithmetic processing unit and...Initial address) (n...Modification start address X1nax... ...Final address patent applicant Roland Corporation

Claims (1)

[Claims] In the storage mode, a series of key event data including the key code representing the pitch of the pressed key and the status representing the pressed/released state of the key is stored in sequence at the specified address, and the playback mode Now, there is a memory means 1 which sequentially reads out and outputs the series of stored key event data from a designated address, and an address of the memory means where each key event data is to be stored and a memory means of the memory means. , a sequencer for an electronic musical instrument comprising two address counters specifying an address from which each key event data is to be read out, based on a series of key event data input from an external device and stored in the memory means 1. Based on a series of key event data read from the event management table means 4 which stores the correspondence relationship between each key and its key press/release state at each point in time, and the memory means 1, each key and its key release state are stored. The memory means 1 is stored until the address specified by the sound generation management table means 3 and the address counter 2 reaches the preset correction start address Xn. The correction start control means 5 operates in the reproduction mode, and after the address specified by the address counter reaches the correction start address, the correction start control means 5 operates the memory means 1 in the storage mode, and the address counter 2
When the address specified by reaches the modification start address , the pronunciation management table means 3 sets each of the key event data relating to the key corresponding to the muted state as key event data representing a key pressed state, and the event management table means 4 sets each key event data corresponding to a key released state, and Start of correction in which the sound generation management table means 3 sequentially stores each of the key/f vent data related to the key corresponding to the sound generation state in addresses after the correction start address Xn of the memory means 1 as key event data representing the key release state. A sequencer for an electronic musical instrument, characterized in that a processing means 6 is attached.