JPH0762797B2 - Electronic musical instrument - Google Patents

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to an electronic musical instrument capable of simultaneously emitting a plurality of musical tones.

[Prior Art and its Problems] Conventionally, there is an electronic musical instrument capable of simultaneously emitting a plurality of musical tones such that a plurality of musical tones having different tone colors can be simultaneously emitted. However, the number of pronunciations assigned to each timbre is limited to one, and even if there are multiple pronunciations, the number of pronunciations is still fixed and cannot be changed. Also in the tone generation channel, for example, a certain channel is fixed for a backing tone and cannot be used for a melody tone, and tone color information such as a tone color that can be assigned to each channel is within a certain range. Was limited to.

For this reason, it is impossible to freely assign channels for sound output, and it is not possible to effectively use the sound generation channels, which limits the musical expression of the performance. Therefore, conventionally, in the case of dividing a plurality of channels into an arbitrary number and assigning different tone color information to each of the divided channel groups, the division number can be arbitrarily changed,
For example, it was considered to switch to 2 divisions and 4 divisions.

However, in such a channel division method, when the number of divisions is determined, the number of channels to which each timbre information is assigned is uniformly determined corresponding to the number of divisions, and the number of channels is specified independently for each audio information. Therefore, it is impossible to allocate an arbitrary number of channels for each tone color information without any restrictions. In other words, when such a method is used, the timbres generated for each application, such as for melody and backing sound, or for manual performance and automatic performance, are different, and it is necessary to allocate a different number of channels to each electronic musical instrument. Then, there was a risk of causing a situation where there were too many channels on the one hand and not enough on the other hand.

"Object of the Invention" The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide an electronic device capable of efficiently using a tone generation channel when generating a tone corresponding to a plurality of tone color information. To provide musical instruments.

[Summary of the Invention] In order to achieve the above-mentioned object, the present invention designates the number of tone generation channels assigned to each of a plurality of tone color information independently for each tone color information by a numerical value, and the designated number of channels. The main point is that the minute channels are assigned to the respective tone color information.

[Configuration of Embodiment] An embodiment of the present invention will be described in detail below with reference to the drawings.

In the case of the present embodiment, the tone color information, that is, the tone color data, is a tone color such as a piano tone or a guitar tone, a portamento,
It should be used as a broad concept that includes effects such as gliding sustain, rhythm, etc. In the present embodiment, the glide on / off key 14, the portamento on / off key 15, and the tone color key 16 of the panel switch unit 1 are used as tone color information generation means, and the tone generation unit 3, the amplifier 4, and the speaker 5 are used as tone generation and sound emission means. Decrement key 17, increment key
18 and steps E4 and F4 correspond to channel number designating means, and steps D3 to D10 and steps G3 and H2 to H5 correspond to channel assigning means.

<Structure of panel switch section> Fig. 2 shows the structure of each key of the panel switch section 12. In the figure, reference numerals 12 and 13 denote multi-poly keys and normal keys, respectively, to set and release the multi-poly mode. It is a key to do. In this multi-poly mode, channels are assigned to each tone, and each tone is polyphonically soundable. In normal mode,
When this is released, only a single tone color tone is polyphonically soundable, and up to 16 tones can be selected to be soundable in the multi-poly mode. A glide on / off key 14 and a portamento on / off key 15 are provided to the left of the multi-poly key 12 and the normal key 13.

The glide on / off key 14 and the portamento on / off key 15 are for switching the glide effect and the portamento effect to the emitted music sound (on) or not (off), respectively. Below each of these keys 12 to 15, a total of 16 tone color keys A to H and 1 to 8 and a tone color number register.
21 are provided.

The tone color key 16 is a key for designating tone color data, and the keys A to H and 1 to 8 are, for example, "A-1" and "C-".
By combining "7", 64 kinds of tone color data can be set. In this case, 16 types of tone color data are selected in the multi-poly mode, and 1 type of tone color data is selected in the normal mode. An LCD 10 is provided on the upper right side of the tone color key 16. In the multi-poly mode, the LCD 10 has a tone color number (TONE NO) selected as shown in FIG.
Y) (number of assigned channels) is displayed, and in the normal mode, the selected tone number (No.
In the example of FIG. 16, C-6) and its timbre name (also piano) are displayed. Below the LCD 10, a decrement key 17, an increment key 18, and cursor keys 19 and 20 are provided.

Cursor keys 19 and 20 are used to move the cursor below the tone number and sound poly number (number of assigned channels) displayed on LCD 10. Decrement key 17 and increment key 18 are used for this sound number and sound poly number. It is for increasing or decreasing the value of.

Each of the above keys 12 to 16 is provided with an LED 11 ..., which lights up when the key is turned on, and the LED 11 above the grind on / off key 14 and portamento on / off key 15 is It is turned on or off according to the content of the effect data in the retrieved tone color data.

<Overall Circuit Configuration> FIG. 1 shows an overall circuit of an electronic musical instrument. In FIG. 1, reference numeral 1 denotes the above-mentioned panel switch section, and this panel switch section 1 uses a plurality of tone color information for tone generation for use in playing. That is, the tone color data and the number of assigned channels (number of sound generation poly) assigned to each of the tone color data are designated. The tone color data is assigned by the CPU 2 to the channels of the tone generation unit 3 corresponding to the designated number of assigned channels, a tone signal is generated, and the sound is output from the speaker 5 via the amplifier 4. At this time, a key code corresponding to the operation key of the keyboard 6 or a key code read from the RAM 7 is simultaneously given to the musical sound generating section 3.

In addition, the SP converter 8 allows CPU
2, tone color data and channel number data assigned to each tone color data are given, and the tone color data is similarly assigned to the channels of the tone generation unit 3 corresponding to the designated number of assigned channels to generate tone signals. The sound is emitted. Eight tone generation channels are formed in the tone generation unit 3, and the eight channels are the maximum number of channels that can be assigned as a whole.

In addition to the programs required for channel assignment processing, etc., the ROM 9 stores tone color data for the above 64 tones, and the RAM 7 has a selected tone color number and the number of polyphony polyphonies assigned to that tone color (assigned channels). number),
In addition to storing the tone color numbers assigned to each of the eight channels, the tone color number register, poly number register, total poly number register, tone color data register, mode flag register, command register and the like shown in FIG. 3 are provided. The timbre number register stores the timbre number that is currently being assigned when allocating channels, and the poly number register stores the number of channels (polyphony polyphony) that has been assigned so far in this channel assignment. The poly number register stores the number of channels (sound poly number) assigned to all 16 tones, the tone color data register stores tone color data of musical tones to which channels are assigned, and the mode flag register stores the above normal mode. The normal flag is set, the normal flag is cleared in the above-mentioned multi-poly mode, the data input from the externally connected electronic musical instrument is set in the command register, and the tone color currently displayed on the LCD 10 is registered in the display tone number register. The number is set.

[Operation of Embodiment] Next, the operation of the present embodiment will be described. The operation of this embodiment has the following six operations.

<Overall processing><Switching processing to multi-poly mode><Channel number (sound poly number) allocation processing><Change of sound poly number (allocated channel number) in panel switch unit 1><Sound poly number from outside (Process of changing number of assigned channels) <Process of switching to normal mode> Among these, the operation which is the feature of the present invention is the third channel number (sound polyphony) assignment process and the fourth and fifth assignment. This is a process of changing the number of channels.

<Overall processing> FIG. 4 shows the overall processing in the CPU2. The CPU2 performs initialization processing such as resetting the RAM7 by turning on the power (step A1), and if there is a change in the key pressing state of the keyboard 6, this is performed. In response to this, the key depression state is changed to perform sound generation processing (steps A2 and A3). Then, if there is a change in the on / off state of each key of the panel switch unit 1, switch processing is performed accordingly (steps A4 and A5), and if there is data input from an externally connected electronic musical instrument, this input The selected data is executed (steps A6 and A7). After that, the CPU 2 repeats the processing of steps A2 to A7 described above until the power switch is turned off (step A8).

FIG. 5 shows the processing when there is an interrupt request for data input or output from an externally connected electronic musical instrument through the SP converter 8 during the above-mentioned overall processing. In this case, CPU2
If the interrupt request is an input request, the externally provided data is set in the command register of the RAM 7 (steps B1 and B2), and if the interrupt request is an output request, the data is output to the outside (steps B3 and B4).

<Processing for Switching to Multi-Poly Mode> FIG. 6 shows the processing for switching to multi-poly mode when the multi-poly key 12 is turned on. When the multi-poly key 12 is turned on in the normal mode, the CPU2 resets the normal flag. Then (steps C1 and C2), the number of polyphony (the number of channels), tone color, and effect are assigned as described later (step C3). Then, "1" is set in the display tone color number register of the RAM 7 and the assigned tone poly number (channel number) of the tone color number "1" is displayed as shown in FIG. 7 (steps C4, C5).

As a result, the mode is switched to the multi-poly mode, and concrete channel allocation will be described below.

<Channel Number (Polyphonic Poly Number) Allocation Processing> FIG. 8 shows a flowchart of the channel number (polyphonic poly number) allocation processing, which is performed by the steps shown in FIG.
It shows the concrete contents of C3. In this processing, assuming that the polyphonic number (channel number) is designated to each of the 16 selected tone color numbers as shown in FIG. 9 (a), the CPU 2 first produces the musical tone being emitted. The off process is performed (step D1), "1" is set in the tone number register and "0" is set in the poly number register (step D2), and the designated polyphony number corresponding to the tone number "1",
The effect information is transferred and loaded into the tone color data register of RAM 7 (step D3). And this tone number "1"
Since the designated poly number of "1" is "0" as shown in FIG. 9 (a), no processing is performed for this timbre number "1", and the value of the timbre number register is incremented by 1 to "2". And (step D9), this tone number exceeds the maximum value.
It is determined whether or not it is 7 "or more (step D10).
In this case, since the timbre number is "2", it does not exceed "17" and the CPU 2 returns to step D3 again and repeats the same processing for the timbre number "2".

After this, since the poly number "1" is specified for the tone number "3", the CPU 2 determines in step D4 that the poly number is not "0", and then sets the poly number "1" in the poly number register. The addition is made to be "1", and it is judged whether or not the added number of poly exceeds the upper limit of "8" (steps D5 and D6). In this case, since the added poly number is "1", it does not exceed "8", and each data such as the poly number and the effect information transferred and loaded in the tone color data register in the above step D3 is shown in FIG. As shown in (b), it is assigned to the first channel formed in the musical sound generator 3 (step D7).

Next, the CPU 2 increments the tone color number by 1 to “4”, and similarly performs the channel allocation processing for this “4” tone color number, but the designated poly number of the “4” tone color number is “2”.
Therefore, as shown in FIG. 9 (b), the data of the tone color number "4" is assigned to the second channel and the third channel. And the last tone number "16"
When the channel assignment processing is completed up to, the value of the tone number register becomes "17" (step D10). The value of the poly number register is transferred to all poly number registers (step D10).
D11), and the channel allocation process ends. in this case,
Since the sum of the poly numbers of all 16 tones in FIG. 9 (a) is "8", the value of the poly number register becomes "8", and as shown in FIG. 9 (b), up to the 8th channel. Assignment is made.

In this way, any number of channels can be assigned to any tone color, and the channels can be used effectively.

Further, as shown in FIG. 9 (c), when the sum of the poly numbers of all 16 tones exceeds "8", channels are assigned to each tone number and the number of assigned channels (poly As the number is sequentially accumulated, the poly number accumulated at the tone number “11” becomes “10”, which exceeds the upper limit “8” (steps D5, D).
6), as shown in FIG. 9 (d), this timbre number "1
The poly number of "1" is set to "0", the assigned channel of the tone number "11" is forcibly set to "0", and the value of the poly number register is decremented by "4" accordingly (step
D8).

Thus, as shown in FIG. 9 (e), channel allocation is performed within a range that does not exceed the total number of allocated channels.

<Processing for changing the number of polyphony (number of assigned channels) in the panel switch section 1> FIGS. 10 and 11 show the number of polyphony (number of assigned channels) by operating the increment key 18 and the decrement key 17 of the panel switch section 1. It is assumed that the multi-poly display as shown in FIG. 7 is made, the cursor is moved to the poly number, and the value of the total poly number register is not "8" or more. When the increment key 18 is turned on here, the CPU 2 causes the steps E1, E2, E3 to
The above multi-poly display is performed, the cursor is moved to the poly number, it is determined that the value of the total poly number register is not "8" or more, and the poly number of the displayed tone number is incremented by 1 (step E4), poly number, tone color, and effect allocation processing is performed (step E5), and the changed poly number is displayed on the LCD 10 (step E6).

In this way, the number of channels assigned to a specific tone color can be designated to be incremented.

Specifically, the allocation process of step E5 is the process of FIG. 8 described above.

Also, in step E1 above, if it is not a multi-poly display,
As shown in FIG. 16, since the tone color name and the tone color number are displayed normally, the tone color number is incremented by 1 by turning the increment key 18 on, and the tone color name is also changed accordingly (step E7), above step E2
Then, if the cursor is not at the poly number, it is at the tone color number, so that the tone color number displayed by turning on the increment key 18 is incremented by 1 (step E8). If the number of poly is "8", the total number of assigned poly cannot be "8" or more,
Since the number of assigned polys cannot be increased any more, the process of increasing the number of assigned polys in steps E4 to E6 is not performed.

FIG. 11 shows the process of changing the number of polyphonic sounds (the number of assigned channels) by operating the decrement key 17 of the panel switch section 1 as described above. As with the above, as shown in FIG. It is assumed that the multi-poly display is made, the cursor is moved to the poly number, and the value of the total poly number register is not "0". When the decrement key 17 is turned on here, the CPU 2 makes the above multi-poly display in steps F1, F2, and F3, moves the cursor to the poly number, and determines that the value of the total poly number register is not "0". , The number of poly of the displayed tone number is decremented by 1 (step F4), the number of poly, tone color and effect are assigned (step F5), and the changed number of poly is displayed on the LCD 10 (step F5). ).

In this way, the number of channels assigned to a specific tone color can be decremented and designated.

The allocation process of step F5 is specifically the process of FIG. 8 described above.

If it is not multi-poly display in step F1 above,
As shown in FIG. 16, since the timbre number is displayed normally, the decrement key 17 is turned on to decrement the timbre number by 1, and the timbre name is also changed accordingly (step F7). In step F2, if the cursor is not located at the poly number, it is located at the tone color number, so the tone color number displayed is decremented by -1 when the decrement key 17 is turned on (step F8). If the assigned poly number of the timbre number is "0" in F3, the assigned poly number cannot be reduced any more, and therefore the process of increasing the assigned poly number in steps F4 to F6 is not performed.

<Process of changing the number of polyphonic polyphonies (number of assigned channels) from outside> FIGS. 12 to 14 and FIGS. 9 (f) and (g) are polyphonic polyphonic numbers (number of assigned channels) based on data from externally connected electronic musical instruments. ) Change processing.

FIG. 12 shows the format of external data given from the externally connected electronic musical instrument. Command 1 is the next command.
The command 1a is to change the number of assigned channels (poly number) of the next tone number to the next poly number, and the command 1b is the number of assigned channels of the next tone number. The content is to change the (poly number) to the next poly number and to set all the assigned poly numbers of the tone color numbers to "0".

FIG. 13 shows the specific processing contents of step A7 in FIG. 4 above.
The data after is loaded and transferred to the command register (step G1), and when this loading is completed (step G2), the command processing in the command register is performed (step G).
3).

FIG. 14 shows the specific processing contents of step G3 in FIG. 13 described above. The CPU 2 first executes the processing of turning off the musical sound being emitted (step H1), and then the command 1 of the external input data If the command is 1a (step H2), the number of assigned channels (poly number) of the specified tone number is changed to the specified poly number (step H3). A process of assigning the number of polys, tones, and effects is performed (step H5).

Thus, the number of channels (poly number) assigned to each tone color number can be changed by designation from the outside.

Also, the command next to command 1 of external input data is 1b.
If so (step H2), the assigned channel number (poly number) of the specified tone color number is changed to the designated poly number, and the assigned poly numbers of other tone numbers are all set to "0" (step H4). ), And assigns the number of poly, tones, and effects according to the number of designated poly after this change (step
H5).

In this case, if the designated tone color number is "1" and the poly number is "8", the assigned channel number (poly number) of the tone color "1" becomes "8" as shown in FIG. 9 (f). The number of assigned poly numbers of other tone color numbers is all "0", so that the data of tone color number "1" is assigned to all the channels of the tone generating section 3 as shown in FIG. 9 (g).

In this way, it is possible to easily change the channels assigned to only specific tones.

The process of step H5 is specifically performed based on the flowchart of FIG. 8 described above.

The above-described processing of changing the number of assigned channels in the panel switch unit 1 or from the outside is also performed when the number of assigned channels is newly designated. In this case, press tone key 16 beforehand
Tones for 16 tones are sequentially designated, and the number of poly to be assigned to each tone color is sequentially designated by the decrement key 17, the increment key 18 or external data for each tone.

<Switching Process to Normal Mode> FIG. 15 shows the switching process to the normal mode when the normal key 13 is turned on. When the normal key 13 is turned on in the multi-poly mode state, the CPU 2 sets the normal flag ( (Steps I1 and I2), the tone color data and the effect data designated by the tone color key 16 are assigned to all channels of the tone generator 3, and the poly number of this tone color is set to "8" (Step I3). Then, the designated tone color number is set in the display tone number register of the RAM 7, and the tone color data is displayed as shown in FIG. 16 (step I4).

In this way, switching to the normal mode is performed.

In the above embodiment, the timbre number is up to 16, but other numbers may be used, and the timbre information may include timbres as well as timbres and effects of piano, guitar, and the like.

[Effects of the Invention] As described in detail above, the present invention designates the number of tone generation channels assigned to each of a plurality of tone color information independently with respect to each tone color information, and assigns the number of channels to the designated number of channels. Since all channels are assigned to each tone color information, it is possible to freely assign channels independently for each tone color information, and the tone generation channels are wasted when generating tones corresponding to multiple tone color information. It is possible to use it without needing to expand the range of performance. Especially, assigning different tones and numbers of sounds for melody and backing tone,
Further, it is possible to provide an electronic musical instrument in which different tones and numbers of sounds can be assigned to the automatic performance and the manual performance, respectively, and more versatile performances are possible.

[Brief description of drawings]

FIG. 1 is an overall circuit diagram of an electronic musical instrument, FIG. 2 is a diagram showing a panel switch section 1, FIG. 3 is a diagram of various registers of RAM7, FIGS. 4 to 6, FIG. 8, FIG. 11 and 13 to 15
The figure shows the overall processing, data transmission / reception processing with externally connected musical instruments,
FIG. 7 is a flowchart of the process of switching to the multi-poly mode, the process of assigning the number of channels, the process of incrementing and decrementing the number of assigned channels, the process of executing the input data, the command process, and the process of switching to the normal mode. FIG. 9 is a diagram showing an example of channel allocation, FIG. 12 is a diagram showing a format of external input data, and FIG. 16 is a diagram showing an example of tone color data display. 1 ... Panel switch unit, 2 ... CPU, 3 ... Music sound generation unit, 5 ... Speaker, 7 ... RAM, 8 ... SP converter, 12
…… Multi-poly key, 13 …… Normal key, 16 …… Tone key, 17 …… Decrement key, 18 …… Increment key.

Claims (1)

[Claims] 1. A tone color information storage means for storing a plurality of types of tone color information, a plurality of tone generation channels, a tone color information designation means for designating desired tone color information from the tone color information storage means, and this tone color information designation. Channel number designating means for independently designating each tone color information by numerically indicating the number of tone generation channels pre-assigned to the tone color information designated by the means, and the tone color information designated by the tone color information designating means. And an assigning unit that assigns to the number of sound generation channels designated by the channel number designating unit.