JPH05289670A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To carry out a truncating processing of many series of sounds without generating any sense of musical incompatibility. CONSTITUTION:Information CK(i) (i=1-k) specifying sounds to be truncated at the same time among respective sounds in many series is set in a ROM. When many series of sounds are generated, the numbers of sound generation channels to be truncated associatively as to respective sound generation channels to which the sound generation of the series of sounds is assgined are calculated according to the CK(i) (i=1-k) and written in areas CC(ch) prepared for the respective sound generation channels ch. For the truncating process, the contents of the areas CC are referred to and when some part of sounds constituting the series of sounds is to be truncated, other sounds in associative relation with it are all truncated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument capable of simultaneously producing a plurality of tone colors.

[0002]

2. Description of the Related Art There is known an electronic musical instrument having a polyphonic sound source having a plurality of tone generation channels and capable of forming a musical tone containing a plurality of tone colors by simultaneously utilizing the plurality of tone generation channels. There is. According to this type of electronic musical instrument, it is possible to perform a variety of performances including pronunciation of multiple mixed tone colors, stereo tones, chorus tones and the like.

[0003]

By the way, when a new pronunciation instruction is generated in the above-mentioned conventional electronic musical instrument, all the pronunciation channels are assigned to the pronunciation processing, or the pronunciation processing corresponding to the pronunciation instruction is performed. The required number of pronunciation channels may not be empty. In this case, a so-called truncation process is performed in which the required number of sounding channels that are currently sounding are selected and the sounding processing by those sounding channels is forcibly terminated. A channel is prepared. However, this truncate processing is performed mechanically by a method that does not consider the mutual relationship between the musical tones during pronunciation, for example, selecting the musical tone channel that is producing the most attenuated musical tone among all the musical tone channels. It was Therefore, by performing the truncation process, only some of the musical tones that have been pronounced in a group up to that point are missing from the middle of the musical tones, which causes a musical discomfort. It was The following cases can be given as examples of the case where a feeling of musical incongruity is generated when a part of the musical sound is lost in the middle. (1) When the stereo sound is being generated, the musical sound of one channel is missing from the middle. (2) In the case where different modulations (amplitude modulation or frequency modulation) are applied to a plurality of musical tones of the same tone color or similar tone colors, and a chorus tone is generated by simultaneously producing sounds through a plurality of tone generation channels. (3) When a dual tone color tone or a multiple mixed tone color tone having three or more tone colors is generated. In this case, the tone colors of each series are set so that the mixed tone will be the desired tone, so if a part of the mixed tone is missing from the middle, it will be switched to a completely different tone at that point. Will be replaced.

The present invention has been made in view of the above-mentioned circumstances, and a plurality of musical tones forming a group can be simultaneously pronounced, and when it is necessary to mute these musical tones, a musical discomfort occurs. It is an object of the present invention to provide an electronic musical instrument capable of performing truncate processing of these musical sounds in a non-conforming manner.

[0005]

The present invention responds to performance information generating means for generating performance information, a plurality of musical sound forming means for forming musical sounds, and the performance information, and (a) corresponds to the performance information. A sufficient number of the musical tone forming means to form the musical tone that has been formed,
(B) Means for instructing, to the musical sound forming means that has instructed to mute, the necessary number of musical sound forming means for forming musical tones corresponding to the performance information, to form musical tones corresponding to the performance information. (C) It is determined that one of the musical tone forming means is instructed to mute, and the musical tone to be silenced at the same time as the musical tone formed by the musical tone forming means is formed by another musical tone forming means. In this case, all the musical tone forming means forming the musical tones to be silenced at the same time are provided with a sound generation assigning means for instructing the silencing.

[0006]

According to the above construction, new performance information is generated during a period in which a plurality of musical tones, which are in a relation to be muted at the same time, are formed by the musical tone forming means, and accordingly, one of the plurality of musical tones is generated. When it becomes necessary to mute a part, not only this part of the musical sound but also all other musical sounds that should be muted at the same time are muted. Therefore, it is possible to prevent a sense of musical incongruity from occurring during the muffling process.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a sound source unit 1 according to an embodiment of the present invention. This sound source unit 1
Forms a musical sound according to a MIDI event given from an external device. FIG. 1 shows a state in which a keyboard 2 and a sequencer 3 are connected as external devices to the sound source unit 1 via a MIDI cable. Further, the tone generator unit 1 is configured so as to be able to form 128 kinds of musical tones, and a tone color number TC is assigned to each of these musical tones. These musical tones formed by the sound source unit 1 include a single sequence tone containing only one tone color, and a multi-sequence tone consisting of a plurality of tone colors having different tone colors.

Next, the internal structure of the sound source unit 1 will be described. 11 is a CPU (central processing unit),
The operation of each unit in the sound source unit 1 is controlled. 12 is RO
M (read only memory) stores various control programs executed by the CPU 11 and various control information necessary for control. Reference numeral 13 denotes a RAM (random access memory), which is used as a storage area for control data used for control performed by the CPU 11. 14 is M
The IDI interface is a process of transmitting a MIDI event generated in the sound source unit 1 from the MIDI-OUT terminal to an external device, and MID from the external device.
Processing for receiving a MIDI event supplied via the I-IN terminal is performed. When a MIDI event from an external device is received, the MIDI interface 14
An interrupt signal IR is output to 11. Reference numeral 15 is a panel switch provided on the panel surface of the sound source unit 1 for controlling various performances. 16 is a display for displaying the state of the sound source unit 1. Reference numeral 17 denotes a tone generator (hereinafter abbreviated as TG) having 28 tone generation channels, which independently form tone signals in each tone generation channel. In the case of producing a multi-sequence sound, the musical tone signals of the respective tone colors forming the multi-sequence sound are formed by using separate tone generation channels. The tone signal formed by the TG 17 is sounded as a tone by the sound system SS outside the sound source unit 1. Each element 11 described above
17 are mutually connected via a bus line B.

Next, the control data stored in the ROM 12 will be described. First, in a predetermined storage area in the ROM 12, tone color data TD (TC) (TC = 0) corresponding to 128 types of musical tones produced by the tone generator unit 1 is stored.
To 127) are stored as shown in FIG. Each of these tone color data TD (TC) is composed of each data described below. Sequence number data K: This sequence number data K is a tone color number TC
Represents the number of timbres included in the musical sound corresponding to (hereinafter referred to as the number of sequences). Chain series data CK (i) (i = 1 to K): The same number of chain series data CK (i) as the number of series corresponding to the tone color number TC are stored. These chain series data CK (i) (i = 1 to K) specify the interlocking relationship at the time of the truncation process of the musical tones of the respective series constituting the multi-sequence sound. That is, each chain series data CK
(I) designates the number of the musical sound to be truncated in conjunction with the i-th musical sound when it is truncated. FIG. 2 exemplifies a case where the number of series is “3”, and shows a state in which chain series data CK (1) to CK (3) required in that case are stored. Series-corresponding tone color data TKD (i) (i = 1 to K): This series-corresponding tone color data is stored in the same number as the number of sequences corresponding to the tone color number TC. FIG. 2 shows the sequence-corresponding tone color data TKD (1) to TKD required for tone control of three sequences.
The state in which KD (3) is stored is shown. Note that the tone color data for a single sequence sound is 1 as the sequence number data K.
Are stored, and one chain series data and 1
Stored is tone-color-based tone color data.

FIGS. 3 (a) to 3 (d) exemplify the contents of the chain series data, and FIGS. 4 (a) to 4 (d) show the case of truncating each tone specified by these chain series data. It shows the interlocking relationship. First, in the case of FIG. 3A, all chain series data CK
(I) (i = 1 to 4) have different contents, and each chain series data CK (i) is one of the values 1 to 4. In this case, as shown in FIG. 4A, all the musical tones are truncated even if any of the first to fourth musical tones is first truncated. When the chain series data is stored as shown in FIG. 3B, as shown in FIG. 4B, whichever tone is first truncated, the second to fourth Music sounds are always truncated. However, the first musical note is truncated only if it is truncated first, and not if the other musical notes are truncated first.
Further, also in the case where the chain series data is stored as shown in FIGS. 3C and 3D, the truncation process is performed according to the same principle as described above.

Next, each table listed below is set in a predetermined storage area in the RAM 13. FIG. 5 illustrates the storage format of these tables in the RAM 13. Tone number table T (MC) (MC = 0 to 15): Tone number assigned to each MIDI channel MC is stored in each area of the tone color table T (MC) (MC = 0 to 15). MIDI channel data table M (ch) (ch = 0
~ 27): These MIDI channel data tables M
In each area of (ch) (ch = 0 to 27), 0th area
~ M of the musical sound whose pronunciation is assigned to the 27th pronunciation channel
The IDI channel number is stored. Note number data table N (ch) (ch = 0 to 2
7): These note number data tables N (ch)
The areas (ch = 0 to 27) have 0th to 27th areas, respectively.
The note number of the musical tone whose pronunciation is assigned to the pronunciation channel is stored. Note that transposition may be performed depending on the series, but in that case, the original note number before transposition is written in this table. Chain data table CC (ch) (ch = 0 to 2
7): These chain data tables CC (i = 0 to 0)
Each area of 27) is an area corresponding to each of the 0th to 27th sounding channels, and in each area, when the truncation of the corresponding sounding channel is performed, the number of the sounding channel to be truncated in conjunction with it is set. Written. FIG. 6 shows the chain data table CC (i) (ch =
0 to 27), an example is shown in which the numbers of tone generation channels to be truncated are written. In the same figure, symbols (1) to (5) indicate groups of tone generation channels that can be subjected to truncate processing in conjunction with each other. RA
In addition to the above table, M13 uses a predetermined storage area and is received via the MIDI interface.
Receive buffer for storing IDI events, receive MIDI
Registers for storing various data taken out from the event are set.

Next, the operation of the sound source unit 1 will be described. When a power switch (not shown) of the sound source unit 1 is turned on, the CPU 3 executes a main routine whose flow is shown in FIG. First, in step S1, initial setting processing is performed, and initial values are written in the storage area for control data in the RAM 5. Next, in step S2, the reception buffer processing routine whose flow is shown in FIG. 8 is started, and in step S101, the MID is set in the reception buffer in the RAM 13.
It is determined whether the MIDI event received via the I interface 14 is registered. If the result of this determination is "YES", the flow proceeds to step S102 and subsequent steps to execute processing corresponding to the received MIDI event, such as the note-on processing routine (FIGS. 9 and 10) and the note-off processing routine (FIG. 11). Return to the main routine. On the other hand, if no MIDI event is registered in the reception buffer and the result of the determination in step S101 is "NO", the process directly returns to the main routine. Next, returning to the main routine, the process proceeds to step S3, the state of the panel switch 15 is scanned, and if any change in the on / off state of the panel switch is detected, the corresponding process is performed. Specifically, for example, a tone color number table edit process or the like is performed. After that, the CPU 11 executes step S2.
And S3 are repeated.

<Interrupt Processing> When an external MIDI event is received by the MIDI interface 14,
An interrupt signal IR is output from the MIDI interface 14 to the CPU 11. As a result, the CPU 11 suspends the process being executed at that time and executes the interrupt process routine whose flow is shown in FIG. First, in step S401, the received MIDI event is MID
It is held in the buffer register BUF in the I interface 14. Next, in step S402, the CPU 1
1 captures a MIDI event from the buffer register BUF. Next, in step S403, the MIDI event fetched from the buffer register BUF is stored in the RAM.
Write to the receive buffer in 13. And the CPU 11
Terminates the interrupt processing routine and restarts the interrupted processing.

<Reception Buffer Processing> When a MIDI event is received and written in the reception buffer, when the process proceeds from step S2 of the main routine to the reception buffer processing routine, the determination result of step S101 is "YES".
Then, the process proceeds to step S102. And the received M
Retrieve the IDI event from the receive buffer. Next, proceeding to step S103, the type of the received MIDI event is discriminated and the branch destination is decided based on the discrimination result. When the note-on event is extracted from the reception buffer, the process proceeds to step S104. Then, the MIDI channel number and the note number included in the note-on event are written in the channel number register MC and the note number register NC, respectively. Next, the process proceeds to step S105, the note-on process routine whose flow is shown in FIGS. 9 and 10 is executed, and the process returns to the main routine. Also, step S1
When the note-off event is extracted from the reception buffer in 02, the process proceeds to step S106. Then, the MIDI channel number and the note number included in the note-on event are written in the channel number register MC and the note number register NC, respectively. Then step S
In step 107, the note-off process routine whose flow is shown in FIG. 11 is executed, and the process returns to the main routine. If the event extracted from the reception buffer is a program change event (tone change event), step S
Proceed to 108. Then, the MIDI channel number and the program number (tone color number) included in the program change event are written in the channel number register MC and the program number register PC, respectively. Then, the process returns to the main routine. If the event extracted from the reception buffer is another event, the corresponding process is performed (step S110), and the process returns to the main routine.

<Note-On Processing> Next, the operation when the note-on event is received and the CPU 11 executes the note-on processing routine will be described. First, step S20
1, the contents of the area T (MC) designated by the channel number register MC in the tone color number table,
That is, the tone color number set for the MIDI channel of the received note event is read and written in the tone color number register TC. Next, a truncation process is executed to secure a sound generation channel assigned to the sound corresponding to the note-on event.

<Truncate Processing> Here, as shown in FIG. 6, the chain data table CC (k) (k = 0 to 2)
The truncate processing will be described by taking the case where the data is stored in 7) as an example. First, in step S202, an initial value "1" is written in the control variable i. Next, proceeding to step S203, the envelope value of the musical tone formed in each tone generation channel of the TG 17 is detected, and the number of the tone generation channel that is producing the tone with the most attenuated tone is written in the tone generation assignment register A (i). .. It should be noted that the tone generation channel that is not producing a musical tone has the envelope value of "0" and is regarded as the tone generation channel that is producing the most attenuated musical tone. In the following, the operation will be described on the assumption that the 0th channel is detected as the most attenuated tone generation channel and "0" is written in the tone generation assignment register A (1) in step S203.
Next, when proceeding to step S204, each tone generation assignment register A (x) in which the tone generation channel number has been written up to that point.
(X = 1 to i) contents (in this case, only A (1))
The contents of area CC (A (i)) of the chain data table are sequentially compared to determine whether there is a match. In this case, area CC of the chain data table
(A (i)) = CC (A (1)) = CC (0)
Data “3” is written as shown in, and
Since the content of the pronunciation assignment register A (1) is "0",
The determination result of step S204 is “NO”, and the process proceeds to step S205. Then, the control variable i is incremented to set the content to "2". Next, in step S206, the area CC (A (i-
1)), that is, in this case area CC (A (1))
= CC (0) content "3" is written to the tone generation channel assignment register A (i) = A (2).

Then, the process returns to step S204 again, and at that time, the contents of the tone generation assignment registers A (x) (x = 1 to i) in which tone generation channel numbers are written (in this case, A (1) and A (2)). )) Is sequentially compared with the area CC (A (i)) = CC (A (2)) of the chain data table to determine whether there is a match. In this case, since A (1) = “0”, A (2) = “3”, and CC (A (2)) = CC (3) = “4”, the determination result of step S204 Is “NO”, and the process proceeds to step S205. Then, the control variable i is incremented to set the content to "3". Next in step S206
Area of the chain data table CC (A (i
-1)) = CC (A (2)) = Content of CC (3) "4"
Is written in the tone generation channel allocation register A (i) = A (3). Then, the process returns to step S204 again, and at that time, the contents (A in this case A) of the respective tone generation assignment registers A (x) (x = 1 to i) in which the tone generation channel number is written
(1), A (2) and A (3)) are sequentially compared with the area CC (A (i)) = CC (A (3)) of the chain data table to determine whether there is a match. In this case, A (1) = “0”, A (2) = “3”, A
(3) = “4” and CC (A (3)) = CC
Since (4) = “3”, the determination result of step S204 is “YES”, and the process proceeds to step S207. In this way, as the sound generation channel numbers for performing sound generation corresponding to the note-on event, "0", "3" and "4" are sound generation assignment channel registers A (x) (x = 1 to 1).
Obtained within 3).

Next, in step S207, the value of the control variable i is the sequence number K (T
C) It is judged whether or not it is the above, that is, whether or not the number of sound generation channels secured up to that point is sufficient to sound the entire series of musical tones corresponding to the note-on event. To do. If this determination result is “YES”, the process proceeds to step S209, and if “NO”, the step S20.
Go to 8.

Next, in step S208, the control variable i is incremented, and then the process returns to step S203 to obtain the number of the sounding channel with the most advanced attenuation and write it in the sounding assignment register A (i). Here, step S
When the number of the most attenuated tone generation channel in 203 is determined, the tone generation allocation registers up to the "i-1" th (for example, when i = 4, A (1), A (2), A
Among the channels other than the tone generation channel written in (3)), the number of the tone generation channel with the most attenuation is obtained. Then, similarly to the above, steps S204 to S204
Each processing of 206 is executed, while incrementing the control variable i, the numbers of all the tone generation channels to be truncated in synchronization with the tone generation channel A (i) are sequentially written into the tone generation assignment register A (i), When the writing of the number of the corresponding sounding channel is finished, step S207
Proceed to.

When a sufficient number of sound generation channels have been secured for sounding the entire series of musical tones corresponding to the note-on event, the result of the determination in step S207 is "YES", and the flow advances to step S209. Then, the TG 17 is instructed to rapidly attenuate each musical tone being sounded in each sounding channel designated by the sounding allocation register A (x) (x = 1 to i). As a result, all the musical tones of the sound generation channel that is initially secured for performing the sound corresponding to the note-on event and all musical tones that are linked to the musical tones are muted.

Now, as shown in FIG. 6, when the data is stored in the chain data table CC (k) (k = 0 to 27), the third tone generation channel is detected as the channel to be truncated in step S203. Suppose The operation in this case will be described below. First, in step S203, "3" is set in the pronunciation assignment register A (1).
Write. Next, i = “1” and CC (A
(I)) = CC (A (1)) = CC (3) = “4”, A
Since (1) = “3”, i is set to “2” (step S205), and CC (A
(I-1)) = CC (A (1)) = CC (3) = “4”
Is written (step S206). Then, returning to step S204, in this case, the pronunciation assignment register A
"3" and "4" are written in (1) and A (2), of which "4" is the area of the chain data table CC (A (i)) = CC (A (2)) = CC
It matches the content “4” of (4). Therefore, step S2
The result of 04 is "Yes" and the process proceeds to step S207. In this way, when the contents of the chain data table CC (k) (k = 0 to 27) are set as shown in FIG. 6 and the third tone generation channel is the target of the truncation process first, Only the third and fourth sounding channels are targeted for truncate processing, and the zeroth sounding channel is excluded from the target of truncate processing. Also, if the 4th sounding channel is the first subject to the truncation process,
Similar results are obtained as above.

<Sound Generation Assignment Process> Next, a sound generation assignment process for assigning the sound generation process of each tone color forming the tone corresponding to the note-on event to the sound generation channel secured by the truncation process. Hereinafter, the above-described truncation process secures the 0th, 3rd and 4th sound generation channels as sound generation channels for sounding corresponding to the note-on event, and the sound generation allocation registers A (1) to A (1) -A
The operation related to the sound generation assignment processing will be described by taking the case where the channel numbers “0”, “3” and “4” are written in (3), respectively. In the following, the tone color TC to be pronounced
The musical tones corresponding to are three-sequence sounds with a sequence number K of "3",
As chain series data CK (1) to CK (3) that specify the interlocking relationship of each sound of the three series during truncation, FIG.
As shown in (d), “2”, “3”, and “2” are RO
The case of being stored in M12 will be described as an example.

First, in step S210, "1" is set in the control variable k. Next, in step S211,
Tone color data TD (TC) corresponding to the tone color TC to be generated
Of the tone color data TKD (k) (in this case, TKD (1)) of the k-th series is read out from the ROM 12 and specified together with the note number NC by the tone allocation register A (k) (in this case, A (1)). It is set in the TG 17 as sound generation data corresponding to the sound generation channel. Next, in step S212, k in the tone color data TD (TC)
The chain series data CK (k) of the th series, that is, CK (1) = “2” shown in FIG. 3D is written in the variable register j in this case. Next, in step S213, the contents of the tone generation assignment register A (j) = A (2), that is, the number "3" of the second tone generation channel among the three tone generation channels secured by the truncation process is set. Area CC (A in the chain data table
Write (k)) = CC (A (1)) = CC (0).
In addition, the contents of the MIDI channel register MC and the note number register NC are stored in the tone generation assignment register A.
Each area M of the MIDI channel data table and note number data table specified by (1)
(A (1)) and N (A (1)), that is, areas M (0) and N (0) corresponding to the 0th tone generation channel.
Write in each. In this way, the writing of the control data corresponding to the first tone generation channel secured by the truncation process is completed. Next, proceeding to step S214, the sequence number data K in the tone color data TD (TC)
Is determined to match the value of the control variable k. In this case, since K = “3” and k = “1”, the determination result of step S214 is “No”, the control variable k is incremented (step S215), and the process returns to step S211.

Next, returning to step S211, 2 out of the tone color data TD (TC) corresponding to the tone color TC to be produced.
The tone color data TKD (2) of the th series is read from the ROM 12 and, together with the note number NC, is stored in the TG 17 as the tone generation data corresponding to the tone generation channel designated by the tone generation allocation register A (k) (A (2) in this case). Set. Next, in step S212, CK (2) = “3” shown in FIG. 3D is written in the variable register j. Next, in step S213, the pronunciation assignment register A (j) =
The content of A (3), that is, the number "4" of the third tone generation channel among the tone generation channels for the three channels secured by the truncation process is indicated by the area CC (A (k)) = CC (of the chain data table. A (2)) = CC
Write in (3). Also, the MIDI channel register M
The contents of each of the C and note number registers NC are designated by the pronunciation assignment register A (2), and the areas M (A (2)) and N (A (2)) of the MIDI channel data table and the note number data table are designated. That is, writing is performed in each of the areas M (3) and N (3) corresponding to the third tone generation channel. In this way, the writing of the control data corresponding to the second tone generation channel secured by the truncation process is completed. Next, in step S214, it is determined whether the sequence number data K in the tone color data TD (TC) matches the value of the control variable k. In this case, K = “3” and k = “2”
Therefore, the determination result of step S214 is “No”, and the control variable k is incremented (step S21
5) and returns to step S211.

Returning to step S211, 3 out of the tone color data TD (TC) corresponding to the tone color TC to be produced.
The tone color data TKD (3) of the th series is read from the ROM 12 and, together with the note number NC, is output to the TG 17 as the tone generation data corresponding to the tone generation channel designated by the tone generation assignment register A (k) (A (1) in this case). Set. CK (3) = “2” shown in FIG. 3D is written in the variable register j. Next, in step S213, the contents of the tone generation assignment register A (j) = A (2), that is, the number "3" of the second tone generation channel among the three tone generation channels secured by the truncation process is set. Area CC (A (k)) = C of the chain data table
Write to C (A (3)) = CC (4). Also, MID
I channel register MC and note number register N
The respective contents of C are designated by the pronunciation assignment register A (3) in the areas M (A (3)) and N (A (3)) of the MIDI channel data table and the note number data table, that is, the fourth pronunciation. Writing is performed in each area M (4) and N (4) corresponding to the channel. In this way, the third secured by the truncation process
Writing of the control data corresponding to the th tone generation channel is completed. Next, in step S214, the tone color data T
It is determined whether or not the sequence number data K in D (TC) matches the value of the control variable k. In this case, step S21
The determination result of 4 is "Yes", and the process proceeds to step S216.

Next, in step S216, each tone generation channel to which tone generation is assigned, that is, each tone generation channel designated by the tone generation assignment register A (x) (x = 1 to k) (in the above example, The note-on signal is sent to the 0th, 3rd and 4th sound generation channels. As a result, the TG 17 produces a multi-sequence sound corresponding to the pronunciation data set as described above. Then, the note-on processing routine ends, and the process returns to the main routine.

<Note-Off Processing> When a note-off event is received and taken into the reception buffer in the RAM 13, a note-off processing routine whose flow is shown in FIG. 11 is executed via the reception buffer processing routine. First, in step S301, the M corresponding to the note-off event
IDI channel number MC to MIDI channel register M
(M) (m = 0 to 27) is compared sequentially with each content, and M
Search for M (m) where (m) = MC. Then step S3
02, and in step S301 M (m) = MC
It is determined whether or not even one M (m) is found. If the result of this determination is "Yes", then step S30.
In step 3, the note-off signal is sent to all the sound generation channels found in step S301 to stop the sound generation processing in those sound generation channels. Then, the process returns to the main routine. On the other hand, if the determination result in step S302 is "No", the process returns to the main routine without executing step S303.

As described above, according to this embodiment, the problem that only a part of the sounds constituting the multi-sequence sound is truncated during the sound generation is solved. Further, according to the above-described embodiment, when truncating one sound forming a multi-sequence sound, only the sound having the interlocking relationship defined by the chain sequence data CK among other sounds constituting the multi-sequence sound is truncated. Since this is done, there is the advantage that it is possible to perform highly flexible truncation processing in which more sounds are not truncated. Hereinafter, this advantage will be described with reference to FIG. FIGS. 13A and 13B exemplify envelope waveforms of sounds of each series when two series of sounds are truncated. First, in the case where the two-sequence sound is a mixed tone color sound composed of a periodic component and a noise component, no musical discomfort will occur even if only the noise component is truncated. Therefore, in such a case, if the sequence corresponding to the periodic component is 1, and the sequence corresponding to the noise component is 2,
“2” and “2” are set in the ROM 12 as the chain series data CK (1) and CK (2). By doing so, when the sound of the sequence 2 is previously determined as the sound to be truncated, only the sound (noise component) of the sequence 2 is truncated as shown in FIG. Sound (periodic component) continues without being truncated. On the contrary, when the sound of the series 1 is previously determined as the sound to be truncated, the sounds of the series 1 and 2 are both truncated. Further, if any of the two series sounds is missing in the middle, a musical uncomfortable feeling is generated, CK (1) = “2” and CK (2) = “1”.
By making such a setting, no matter which one of the series 1 or 2 is determined as the sound to be truncated first, both the sounds of the series 1 and 2 are truncated as shown in FIG. 13B. It

The truncation control of each sound of the multi-sequence sound is not limited to the control method described in the above embodiment. For example, as shown in FIG. 14, a flag R (ch) is prepared for each tone generation channel ch. And
In the sound assignment process, if there is another sound that must be truncated at the same time when the sound assigned to the sound generation channel is truncated, the sound corresponding to the sound generation channel ch among the bits of the flag R (ch) is generated. At the same time, "1" is set to the bit position corresponding to the sounding channel to which the sound to be truncated is assigned. By doing so, when the truncation process is performed on the tone generation channel ch, the truncation process is simultaneously performed on the tone generation channel corresponding to each bit for which "1" is set in the flag R (ch). Is given. In the example shown in FIG. 14, the fifth and sixth tone generation channels are subject to truncate processing as the 0th tone generation channel is subject to truncate processing. On the other hand, if the fifth or sixth tone generation channel is the target of the truncation process first, only the fifth and sixth tone generation channels are truncated, and the zeroth tone generation channel is not truncated. In the above embodiment, a certain sounding channel c
When there is a sound that should be truncated in association with the sound assigned to h, the tone generation channel number ch 'of that sound is written in the chain data table CC (ch), but ch'-ch is changed to CC ( ch).

[0030]

As described above, according to the present invention, performance information generating means for generating performance information, a plurality of musical sound forming means for forming musical sounds, and response to the performance information,
(A) Instructing the tone forming means of a sufficient number to form a tone corresponding to the performance information to mute the tone being formed, and (b) forming a tone by instructing the tone mute. Of the means, means for instructing the formation of the musical sound corresponding to the performance information to the necessary number of musical sound forming means for forming the musical sound corresponding to the performance information, comprising: (c) the musical sound forming means. If it is decided to give one of the above-mentioned mute instructions, and the tone to be silenced is simultaneously formed by the other tone forming means at the same time as the tone formed by the tone forming means, these are simultaneously formed. Since all the tone forming means forming each tone to be muted is provided with a sound allocating means for instructing the muting, it is possible to generate a multi-sequence sound including a plurality of timbres and to generate music. Without feeling uncomfortable,
There is an effect that it is possible to perform muffling processing of multi-series sound and obtain a high performance effect that has not been obtained in the past.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic musical instrument according to an embodiment of the present invention.

FIG. 2 is a diagram showing a tone color data table stored in a ROM 12 in the same embodiment.

FIG. 3 is a diagram showing an example of chain series data in the embodiment.

FIG. 4 is a diagram showing an interlocking relationship at the time of truncation of each sound of a multi-sequence sound designated by the chain sequence data shown in FIG.

FIG. 5 is a diagram showing each table set in a RAM 13 in the embodiment.

FIG. 6 is a diagram showing an example of contents of a chain data table in the embodiment.

FIG. 7 is a flowchart illustrating the operation of the embodiment.

FIG. 8 is a flowchart illustrating the operation of the embodiment.

FIG. 9 is a flowchart illustrating the operation of the embodiment.

FIG. 10 is a flowchart illustrating the operation of the embodiment.

FIG. 11 is a flowchart illustrating the operation of the embodiment.

FIG. 12 is a flowchart illustrating the operation of the embodiment.

FIG. 13 is a diagram for explaining the effect of the same embodiment.

FIG. 14 is a diagram illustrating a modified example of the same embodiment.

[Explanation of symbols]

11 ... CPU, 12 ... ROM, 13 ... RAM, 1
7 ... Sound source.

Claims (1)

[Claims] 1. A musical performance information generating means for generating musical performance information, a plurality of musical sound forming means for forming musical tones, and (a) sufficient to form musical tones corresponding to the musical performance information in response to the musical performance information. Necessary to instruct a large number of the musical tone forming means to mute the musical tone being formed, and (b) form the musical tone corresponding to the performance information among the musical tone forming means that has issued the mute instruction. Means for instructing a number of musical tone forming means to form musical tones corresponding to the performance information,
(C) It is determined that one of the musical tone forming means is instructed to mute, and another musical tone forming means forms a musical tone to be muted at the same time as the musical tone formed by the musical tone forming means. If there is, the electronic musical instrument is provided with a tone generation assigning means for instructing the tone generation to all the tone forming means forming each tone to be silenced at the same time.