JP2522793Y2 - Electronic musical instrument - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The invention relates to an electronic musical instrument having a key split function that can divide a keyboard into a plurality of pieces and play musical tones of different timbres in each key range. is there.

[Prior art and its problems] Conventionally, in such an electronic musical instrument, the range of each key range divided in the key split mode is fixed, so that, for example, a right-tone tone requires a wide range. Therefore, there is a problem that even when the performance of the tone in the left key range may be performed in a narrow range, a fixed fixed key range is assigned, so that the performance is restricted.

To specify each tone in the key split mode, first operate the key split mode setting switch, and if the key range is divided into a high range right key range and a low range left key range, Next, after setting the mode to the right range, the switch of the tone assigned to the right range is operated, and further, the mode of the left range is operated to switch the tone assigned to the left range.

For this reason, the number of switches required to exert the key split function increases, such as tone switches, key split mode switches, etc., and it takes time to set, and it is very troublesome especially when dividing the keyboard into many. There were also problems.

[Purpose of the invention] This invention has been made in view of the above-mentioned circumstances. The purpose of the invention is to allow each divided key range at the time of key splitting to be freely changed in accordance with the performance content, thereby achieving a smoother operation. You can play and use the key range without waste, and you do not need to provide a dedicated switch to specify each divided key range, the number of switches can be reduced, the electronic musical instrument itself can be downsized, and each key range divided into multiple An object of the present invention is to provide an electronic musical instrument that requires a small number of switches and requires only a simple operation when assigning a tone to a musical instrument.

[Gist of the Invention] In order to achieve the above-mentioned object, the present invention enables the range of each divided key range at the time of key splitting to be freely set by a simple operation, and sets the range of each divided key range. Is performed with the keys of the keyboard, and furthermore, for example, by simultaneously pressing a plurality of tone switches, the keyboard is divided into a plurality of pieces by simply specifying a plurality of tones by the tone specifying means, and The main point is that a plurality of timbres are assigned to each other so as to automatically enter a key split state.

[Configuration of Embodiment] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

<Overall Circuit Configuration> FIG. 1 shows an overall circuit diagram of an electronic musical instrument. In FIG. 1, reference numeral 1 denotes a tone designation switch.
Then, 20 stored in the tone register 9 in advance
One or a plurality of tone colors are selected and designated from among the tone colors, and the selected tone color data is set in the tone color register 5 by the CPU 2. In this case, in order to designate a plurality of tones, the plurality of tone color designation switches 1 are simultaneously pressed, and the tone of the switch which is pushed first is set as that of the right key region on the treble side of the keyboard 4, and the tone of the switch which is pushed later is pushed. The key split mode is set as that of the left key range on the bass side of the keyboard 4, thereby automatically setting the key split mode. The key split mode can be released by turning on one of the tone color designation switches 1 instead of pressing the same at the same time, and a single tone color data is set in the tone color register 5.

If an arbitrary key on the keyboard 4 is operated at the same time when a plurality of timbres are specified at the same time, the keyboard is divided into a right key area and a left key area for key split centering on the operated key. The split position key code is given to the split control unit 7 by the CPU 2, set in the register KSP 8 through the split control unit 7, and
Given to. In this case, if there is no simultaneous depressing of the keys at the divided positions of the keyboard 4, data indicating that is not given to the split control unit 7 by the CPU 2, a predetermined fixed key code is set in the register KSP8, and the key code It is provided to the size discriminating unit 3.

A key code corresponding to the operation key of the keyboard 4 is given to the CPU 2 at the time of performance, and the key code size discrimination unit 3
Also given. The key code size discrimination section 3 discriminates whether the given operation key code is higher or lower than the division position key code, and sends a discrimination signal c to the CPU 2. If the operation key code is higher than the division position key code based on the discrimination signal c, the CPU 2 sends the key code together with the timbre data of the right key range of the timbre register 5 to the tone generator 12, and conversely determines whether the key code is lower. For example, the key code is sent to the tone generator 12 together with the tone color data of the left key region of the tone register 5. The tone generator 12 generates a tone according to the given key code and tone color data, and outputs the tone from the speaker 14 via the amplifier 13.

In this embodiment, an eight-channel tone generation system is configured by the time-division processing method, and tone colors can be set independently for each channel.

<Configuration of Various Registers> FIG. 2 shows a specific configuration of various registers of the register group 11, the register KSP8, the tone register 9, and the tone color register 5 of FIG.

The register OP holds the value of the channel on which key-on has been performed first.

The register WP is a work pointer for a key assigner that assigns a channel to an operation key.

The register FP holds the value of an empty line when an empty line is found in eight channels.

Register FOUNDF is set to true (TR
UE), when there is no data, each data called false (FALSE) is set.

The flag T is set when at least one of the tone color designation switches 1 is turned on, and is cleared when all the tone color designation switches 1 are turned off. The flag K is set when two switches are simultaneously operated by the tone designation switch 1 and two tone colors for key split are designated, and thereafter, one switch is turned on by the tone designation switch 1 to release the key split mode. Cleared when

The register NL (New Line status) has the 0th bit, the 1st bit,.
1 channel,... Corresponds to 7 channels, and when a new channel is designated, the corresponding bit is turned on.
The data is transferred to and reset to prepare for the next channel assignment.

The register OL (Old Line Status) has an 8-bit configuration, and the content of the register NL is set every time the checking of all lines is completed as described above.

The register TL (Trigger Line status) has an 8-bit configuration, and each bit of 0 to 7 corresponds to each of the eight channels, and is turned on at the time of key-on and turned off at the time of key-off.

The register SC has eight 8-bit registers, and each register stores a key code of a key assigned to the channel corresponding to channels 0 to 7.

The register CSC is set with the key code of the latest key currently on.

The register KSP8 has an 8-bit configuration, in which the above-described division position key code is set.

The registers TONE1 to TONE20 constitute the tone register 9, and the contents of the 20 kinds of tone data are set.

Each of the registers RT and LT is one of the registers constituting the tone register 5, and stores tone color numbers assigned to the right key area and the left key area of the keyboard 4 divided in the key split mode. This tone number takes a value from 1 to 20 and
It corresponds to 20 tone data of NE1 to TONE20. When not in the key split mode, the timbre numbers assigned to the entire key range are stored only in the register RT.

The register CTONE is one of the registers constituting the tone register 5, and is composed of eight registers 0-7. Each register corresponds to the 0-7 line (channel), and the tone number of the tone assigned to the channel. Is stored.

[Operation of Embodiment] Next, the operation of this embodiment will be described in detail with reference to the flowchart of FIG. It is assumed that 20 tone colors have already been set in the tone register 9.

<Setting of key split mode> When the power is turned on, the CPU 2 starts executing the flow of FIG. 3, and registers NL, OL, TL, flags T, K, and register S
C and OP are reset (steps S1 to S3). Here, it is assumed that one of the tone color designation switches 1 has been turned on in order to designate a tone color in the right key range. The CPU 2 detects that the switch is turned on (step S4), and determines whether or not the flag T is turned on (step S5). Since this flag T has been turned off in the initialization processing in step S1, the CPU 2 proceeds to step S6, turns on this flag T indicating that the tone color designation switch 1 is on (step S6), and sets the register KSP8. Reset (step
S7) The tone color number corresponding to the designation of the tone color designation switch 1 is set in the register RT of the tone color register 5 (step S7).
8) The flag K is turned off (step S9).

Here, in order to further specify the tone of the left key range,
Assuming that the other switches in the tone designation switch 1 are turned on and the key at the position dividing the left key range and the right key range is operated, the CPU 2 determines that the tone designation switch 1 is not turned off. (Step S15) After the processing of steps S30 to S35 and S21 to S29 described later, the switch ON of the tone color designation switch 1 is detected (step S4), and it is determined that the flag T is turned on. (Step S
5) The tone color number corresponding to the designation of the switch pressed after the tone color designation switch 1 is set in the register LT of the tone color register 5 (step S10), and the key operation at the divided position of the keyboard 4 is determined (step S10). Step S11), split control unit 7
, The division position key code is set in the register KSP8 (step S12).

In this way, by simply operating the keys of the keyboard 4, the split key range for key splitting can be designated, and a dedicated switch for designating the key range is not required, and the operation is simplified. The range can also be set freely. By turning on only two switches of the tone color designation switch 1, the key split mode is set, and the tone colors required for the key split performance can be designated at the same time, so that the key split switch becomes unnecessary and the operation is simplified.

In the above step S11, when there is no manipulation of the keys of the division position of the keyboard 4 would predetermined fixed C ₄ division position key code of the through split controller 7 is set in the register KSP8 ( Step S17, S1
8).

Then, the CPU 2 is provided with the LE provided for each key of the keyboard 4.
In D, the LED corresponding to the key corresponding to the division position is turned on (step S13), the flag K indicating that the key split mode is set is turned on (step S14), and all the switches of the tone color designation switch 1 are turned off. If so, the flag T is turned off (steps S15 and S16). This process dividing position of C ₄ in the fixed even when set, is similarly performed (step S19, S20).

<Performance in Key Split Mode> In this state, key split performance can be performed by operating each key of the keyboard 4, but this is mainly performed in steps.
This is performed in S57 to S62. That is, when the CPU 2 determines that the flag K indicating the key split mode is on (step S57), the operation key code set in the register CSC of the register group 11 (this key code setting process will be described later). Is smaller than the division position key code of the register KSP8 (step S58), timbre data is extracted from the tone register 9 using the timbre number of the left key range of the register LT as an index (step S59). Along with the operation key code of the register CSC, it is sent to the musical tone creation unit 12 (steps S60 and S61), and a key-on instruction is performed (step S62).

In this case, if the operation key code is equal to or larger than the division position key code (step S58), the tone register 9 is set with the tone number of the right key range of the register RT as an index.
More timbre data is extracted. (Step S6
3).

 Thus, a key split performance can be performed.

<Release of key split mode> In the key split mode as described above, to release this mode, only one of the tone designation switches 1 needs to be turned on, and the tone corresponding to this switch is released from the mode. The tone assigned to the keyboard 4 later. That is, the CPU 2 detects that the tone color designation switch 1 is turned on in step S4, and
In step S5, it is determined that the flag T is turned off, and the tone color number corresponding to the designation of the tone color designation switch 1 is set in the register RT of the tone color register 5 in steps S6 to S9.

Then, since the operation of the tone color designation switch 1 is released, the tone color number is not set to the register LT in steps S10 to S20.

In this manner, the key split mode can be released by simply turning on one of the tone color specifying switches 1, and the key split switch is not required, thereby simplifying the operation and simultaneously specifying the tone in the normal mode.

<Performance after the key split mode is released> In this state, if each key of the keyboard 4 is operated, a normal normal performance can be performed. In this case, however, the normal performance is performed mainly in steps S57 to S62.

That is, this time, the CPU 2 determines that the flag K indicating that the key split mode is set is off (step S5).
7), without performing the process of selecting the timbre based on whether the operation key code is larger or smaller than the division position key code in step S58, the timbre of the register RT set in step S8 above for all the operation key codes The tone data corresponding to the number is transmitted (steps S63, S60, S61), and a key-on instruction is given (step S62).

Thus, normal normal performance can be performed.

<Processing During Performance> Next, processing required during performance in the key split mode will be described. In this If register KSP8 set division position key code C _4, as the sound of the right key range flute, it is assumed that the violin is set as the sound of Hidarikagiiki.

After the key split mode setting and the tone designation processing in steps S1 to S20, the CPU 2 transfers the data of the register NL which has been reset to the register OL (step S3).
0), the register NL is reset (step S31). Next, the CPU 2 outputs a key common signal to the keyboard 4 to perform a key scan (step S32). The output of each key is input to the CPU 2 (step S33), and the CPU 2 determines the presence or absence of a key press based on the data content (step S34). When it is determined that no key is pressed, it is determined whether all keys have been scanned (step S35). If “NO”, the process returns to step S32, and steps S32 to S35 are repeated until all keys have been scanned.

Next, the first three simultaneous tones C ₂ shown in the score of FIG.
When E _2, G ₂ to (both whole notes) at the same time depressed key, step electrically example, key C ₂ as the first on key
When detected in S34, the key code C ₂ is set in the register CSC (step S36). Also register OP
Is transferred to the register WP (step S3).
7) In addition, the data "False (FALS
E) ”is set (step S38). And register
The process of step S39 for obtaining the contents of the register SC using the data "0" of the WP as an index is performed, and there is no key code of the 0th channel of the register SC because this is the first key-on.

Next, the process proceeds to step S40, where it is determined that the data “C ₂ ” in the register CSC matches the data “0” in the register SC. The contents of the TL (the 0th channel is now off) are checked to determine whether or not the data in the register TL is on (step S52). Then "N
Since it is "O", the process proceeds to step S44, and it is determined whether the data of the register FOUND is "false" (FALSE), but "YES".
Therefore, the process proceeds to step S45, and data “TRUE” is set in the register FOUNDF. Further, data “0” of the register WP is set in the register FP (step S46).

Next, the register WP is incremented to "1" (step S47), and it is determined whether or not the result is "8" (step S48). However, since it is not, the process proceeds to the next step S49. In step S48, when the value of the register WP becomes "8", an operation of automatically returning the value to "0" is performed.

Next, in step S49, it is determined whether or not the data “1” of the register WP matches the data “0” of the register OP, and since it is “NO”, the process proceeds to the next step S39.
Thereafter, the steps S49, S39, S40, S51, and S5 are performed until the register WP is incremented in the step S47 and the data “1” of the current register WP is returned to “0”.
2. S44 to S48 are repeated seven times. That is, during this time, the value of the register WP changes to 1, 2, 3,..., 7, 0. When it becomes "0" and the coincidence of the data "0" of the register OP is detected in step S49, the process proceeds to step S50, and it is determined whether or not the register FOUNDF is true (TRUE).
In this case, the determination is “YES”, and the process proceeds to step S53 to store the data “C ₂ ” of the register CSC in the register SC using the content “0” of the register FP as an index. That is, register S
Key code C _2, which is key-on to the 0th channel of C is to be registered.

Next, the register NL is turned on using the contents of the register FP (the 0th channel) as an index.
Data "ON" is set to the 0th channel of NL (step S54). Then, “on” is set to the 0th channel of the register TL using the content (0th channel) of the register FP as an index (step S55). Further, the data “0” of the register FP is transferred to the register OP (Step S56). This is an update of the key assigner's search start line pointer.

Next, at step S57, when it is determined that the flag K indicating that the key split mode is set is off, the register CSC
Then, the magnitude relationship between the data of the register KSP and the data is determined (step S58).

Now, register CSC is C ₂ , register KSP is C ₄ and CSC
<Because of the relationship of KSP, the process proceeds to step S59 to extract timbre data using the contents of the register LT as an index. Then, the content of the register LT is set in the register CTONE in the register CTONE. Then, the extracted violin tone color data from the register TONE according to the contents of register CTONE, sent to the tone creation unit 12 (step S60), also register CSC data, i.e., delivery key code C ₂ to tone creation unit 12 Is performed (step S61). Then, the CPU 2 gives a key-on instruction to the musical sound creating section 12 (step S6).
2), therefore creating the tone keys of the tone creation unit 12, C ₂ is started. Then, the process returns to step S35, and it is determined whether or not all-key scanning has been performed, and the process proceeds to step S32 or step S21.

Next, when the key simultaneously operated key E ₂ of C ₂ is electrically detected, step through the step S35 S36 to S38
By the processes of the key code E ₂ is written to the register CSC, is the data "0" is set in the register OP into register WP, and the data in the register FOUNDF "False (FALS
E) ”is set. Then, data “C ₂ ” of the 0th channel of the register SC is obtained (step S39), and then data “E ₂ ” of the register CSC and data “C ₂ ” of the register SC
₂ ) is determined (step S40), and step S5
Proceed to 1. Then, the data “ON” of the 0th channel of the register TL is detected (step S41), the process proceeds to step S47 via step S52, and the register WP is incremented by 1, and
It becomes "1".

Next, register WP ("1") and register OP ("0")
Proceeds to step S39 due to the inconsistency of
Channel data (now without a key code) is obtained, and discordance with the register CSC is determined (step S40), and the first channel data "OFF" of the register TL is read out,
The process proceeds to step S44 via steps S51 and S52. Then, in step S44, the false value (FALSE) of the register FOUNDF is determined, and the data “true” is stored in the register FOUNDF.
Is written (step S45). Next, data "1" is set in the register FP (step S46), and the register W
P + 1 is added to “2” (step S47).

Next, in step S49, steps S39, S40, S51, S5 are performed until the value of the register WP is incremented to the previous key-on pointer “0” held in the register OP.
2, S44 and S47 to S49 are repeated. The register WP advances to step S50 becomes "0", it is further stored key code E ₂ is the first channel register SC in step S53 (step S53). Also, “ON” is set in the first channel of the register NL (step S54), and “ON” is also set in the first channel of the register TL (step S55).

Data "1" in the next register OP from the register FP is set (step S56), also step S57~S62 are executed as in the case of the tone C _2. Therefore tone of E ₂ is also started created by sound of a violin.

Also similar described above for tone G ₂ of C _2, E ₂ and simultaneous operation, the tone G ₂ is assigned to the second channel. Therefore register OP, both the data "2" is set in the register FP, also register NL, the data "ON" is set in the register TL, the key over the code G ₂ is written in the second channel of the further register SC. As a result, the musical tones of C ₂ , E ₂ , and G ₂ are all emitted by the violin tone.

Next, the pitch C ₃ 2 minutes note key points with the after one beat Once turned on, as key to the left of the key range in the same manner as the key C _2, E _2, G ₂ against this key The processing is executed, and thus the musical tone is emitted simultaneously with the violin tone along with C ₂ , E ₂ and G ₂ in the third channel.

The same applies to the following musical tones G ₃ and E ₃ , each of which is processed as a key in the left key range, and in the fourth and fifth channels, each musical tone is converted into another C ₂ ,
E _2, is emitted by the tone of G _2, C ₃ simultaneously violin. Therefore, of the eight tone generation systems, six channels are allocated for the left key range, and the remaining two channels (the sixth and seventh channels) are empty channels.

Next, when the first bar ends, all the six keys are keyed off. In this case, for example, explaining the key-off process of the C _2, after the process of step S35, the register WP is cleared (step S21), and the tone C ₂ is designated assigned to the zeroth channel, then step S2
2, register TL, register OL,
The data of each channel 0 of the register NL is obtained. Then, it is determined whether each data of the register TL, the register NL, and the register OL is “ON”. In this case, each of the data is “ON”,
When it becomes "off" or "off", it is determined that the key is off, and the process proceeds to step S26 through steps S23 to S25, and the 0th channel of the register TL is turned off. Then, the key-off instruction is made to the musical tone creating section 12, as a result, the tone of the C ₂ is muted (step S27). Next, the register WP is incremented to “1”, the first channel is designated, and it is determined whether or not the value of the register WP is “8”.
Returning to ₂ , the key-off process is performed for the key of E2 assigned to the first channel.

Hereinafter, until the further 2-8 registers WP in the same manner, the _{G 2, C 3, G 3} , E 3 is also key-off as well.

The operation of channel assignment is the same even in two bars, and the simultaneous operation keys of B ₂ , D ₃ , and F ₃ are assigned to channels 6, 7, and 0, respectively. When the key of the next A ₃ is turned allocated to the first channel, four musical tone is sounded by the sound of a violin.

Then since the key belongs to the right key range when turning on the key G _4, the processing of steps S32~S57 for assigning a second channel to this key is the same as that already mentioned, in step S58 Key code G of register CSC
_4, it is larger than the key code C ₄ registers KSP, i.e., is determined to be the right key range, the process proceeds to Step S63. This step S63 corresponds to step S59,
Only the processing for the register LT in S59 is replaced with the processing for the register RT. Therefore this key code G ₄ are created the tone in the tone of the flute in the tone forming system of the second _{channel, B 2, D 3, F} 3, A 3 tone flute violin tone and G ₄ is release at the same time Be sounded. And the channel allocation, no matter the pitch C ₄ was the key splits to the key depression speed of the left and right with a reference, Yuku are sequentially assigned to the operation order. The same applies to other musical tones in FIG.

Note that the number of divisions of the keyboard 4 is not limited to two, and may be more. In this case, the process of steps S10 to S14 in FIG. It is sufficient to repeat the number of operations less than the number of operations by one, and the process of step S58 is performed in a plurality of steps corresponding to the number of division positions, and the number of steps is equal to the number of registers LT.
What is necessary is just to increase the same processing as S59 and S63.

[Effects of the Invention] As described in detail above, the present invention simply presses a key on the keyboard while simultaneously pressing a plurality of tone switches, and divides the keyboard into a plurality of keys using the pressed key as a dividing position. ,
The tone corresponding to the plurality of pressed tone switches is assigned to each key range, and the key split state is automatically set.Therefore, there is no need to provide a dedicated switch for specifying each divided key range. The number of switches can be reduced to reduce the size of the electronic musical instrument itself, and the number of switches required for assigning a tone to each of the plurality of divided key ranges can be reduced and the operation can be simplified.

[Brief description of the drawings]

FIG. 1 is an overall circuit diagram of an electronic musical instrument according to an embodiment of the present invention, FIG. 2 is a diagram for explaining various registers, and FIG. 3 is a flowchart of processing for setting and canceling a key split mode and performing a performance. FIG. 4 shows a musical score of a performance example. 1 ... tone designation switch, 2 ... CPU, 3 ... key code size discrimination section, 4 ... keyboard, 5 ... tone register, 7 ...
... Split control unit, 8 ... KSP register 9, 9 ... Tone register, 11 ... Register group, 12 ... Tone creation unit, 14
... Speaker.

Claims (1)

(57) [Scope of request for utility model registration] 1. A tone color designating means capable of designating a plurality of tone colors, a key operation detecting means for detecting whether or not a key operation on a keyboard has been performed during a plurality of tone color designating operations by the tone color designating means; Keyboard dividing means for dividing the keyboard into a plurality of key ranges based on the key operation detected by the detecting means; and a plurality of timbres designated by the tone color specifying means for each of the key ranges divided by the keyboard dividing means. And tone generation and sound emission means for creating and emitting a tone of a tone set in a key range to which the operation key belongs based on a key operation of the keyboard. Electronic musical instruments.