JP5470728B2 - Performance control apparatus and performance control processing program - Google Patents

Description

  The present invention relates to a performance control apparatus and a program for performance control processing.

Conventionally, there has been proposed an instrument having a so-called continuo function or duet function that allows different performers to perform the low key range and the high key range of a single keyboard.
In a musical instrument having this continuo function, octave conversion is separately performed for each key range so that each performer can perform in the same range.
For example, in Patent Document 1, the keyboard is divided into a low key range and a high key range with the key number SP as the split position, and in the low key range, the pitch of the musical tone designated by the key press is increased by two octaves from normal. In the high key range, a configuration in which an octave down is performed is disclosed.

Further, in Patent Document 2, by determining the key range to which the key corresponding to the key information generated by the key press belongs, and changing the desired octave amount of the key information generated in this key range based on the determination result, There is disclosed a configuration in which a portion in which pitches of musical sounds generated in at least two key ranges overlap is generated.
Further, in Patent Document 3, when the keyboard is divided into two key ranges, the original octave value of the key located in the center of the first key range and the reference tone range of the tone set in the first key range are described. A configuration is disclosed in which a reference tone range for each timbre is arranged approximately at the center of each key range by calculating an octave shift amount based on the octave value.

Japanese Patent No. 3586754 Japanese Examined Patent Publication No. 62-35118 JP 2000-194369 A

  When a single player is divided into a plurality of key ranges and performed by different performers, there arises a problem that the key range used for the performance becomes narrow. However, the number of keys and the size of the keyboard are determined in advance, and it is impossible to distribute the key range as desired by each player.

  However, depending on the form of performance, there may be a case where not much key range is required. For example, electronic musical instruments have a microphone input function in recent years, and it has become possible to perform while singing. The reality is that such vocalists don't need that much key.

  In this way, if you change the key range according to the performance form, it will be easier to play and you will be able to use the keyboard more efficiently. It is very troublesome to perform the operation.

  The present invention has been made in view of such circumstances, and an object of the present invention is to enable more efficient key range allocation automatically in accordance with a performance form.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a keyboard having a plurality of keys sequentially assigned with key numbers for designating the pitches of musical sounds to be pronounced, and any one of the keys. When a key is pressed, an octave changing means for changing the key number of the pressed key by a predetermined octave corresponding to the key range to which the pressed key belongs, and the octave changing means Tone generation instruction means for instructing the generation of musical tones corresponding to the changed key number, external sound input means provided corresponding to each of the plurality of key ranges of the keyboard, and the external sound input means A detecting means for detecting whether any of the voices can be input, and a key range corresponding to the external voice input means in a state where the voice input is detected, which is detected by the detecting means, can be narrowed to a predetermined range, and voice can be input. State A key range changing means for a key range spread the predetermined range corresponding to have the external audio input means, and having a.
Further, in the invention according to claim 2 dependent on claim 1, the external sound input means comprises a plurality of input terminals for connecting sound detection means for detecting external sound, and the detection means comprises the sound detection means. It is characterized by detecting whether the means is connected to one of the input terminals.
Further, in the invention according to claim 3 that is dependent on claim 1, the key range changing means is capable of inputting voice when all of the external voice input means are ready for voice input by the detecting means and when all of the voice input is possible. When not in a state, each key range of the keyboard is set in a predesignated range.
Furthermore, the invention according to claim 4 corresponds to a keyboard having a plurality of keys to which a key number for designating the pitch of a musical tone to be pronounced is assigned, and a plurality of key ranges of the keyboard. Corresponding to the key range to which the pressed key belongs when a key of the keyboard is pressed to a computer applied to a performance device having external audio input means provided An octave change step for changing the key number of the key that has been pressed by the set octave, a musical sound generation instruction step for instructing the generation of a musical tone corresponding to the changed key number, and the external audio input A detecting step for detecting whether any of the means is capable of voice input, and a state in which the key range corresponding to the detected external voice input means in a state in which the detected voice input is possible is narrowed to a predetermined range and voice input is possible A key range changing step of the key range spread the predetermined range corresponding to no the external audio input means and thereby the execution.

  According to the above invention, since the key range distribution is changed according to the connection state of the microphone, more efficient key range distribution can be automatically performed according to the performance form.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 is an external view of an electronic keyboard instrument to which the present invention is applied.
The instrument body has a keyboard 1 having 88 keys and a duet switch 2 for switching between a normal mode and a duet mode. At both ends of the instrument body, microphone input terminals 3a and 3b are provided, and microphones 4a and 4b are connected to the terminals.

In the normal mode, MIDI NOTE numbers 21 to 108 are assigned to the keys of the keyboard 1, and the pitches A0 to C8 are designated.
On the other hand, in the duet mode, when both microphones 4a and 4b are connected, or when both are not connected, the 39 keys included in the key range lower than the split point position 5 include MIDI NOTE number 45. ˜83 are assigned, and are configured to designate pitches A2 to B5, respectively. In addition, MIDI NOTE numbers 36 to 84 are assigned to 49 keys included in the high key range from position 5 of the split point, and are configured to designate pitches from C2 to C6, respectively.

  In this embodiment, when only the microphone 4a is connected in this duet mode, the split point is moved to the position 6 in the low key range direction by two octaves. Accordingly, MIDI NOTE numbers 69 to 83 are assigned to 15 keys included in the lower key range from position 6 of the split point, and are configured to designate pitches A4 to B5, respectively. Are assigned MIDI NOTE numbers 12 to 84, and are configured to designate pitches from C0 to C6, respectively.

  When only the microphone 4b is connected, the split point is moved to the position 7 in the high key range direction by two octaves. Therefore, MIDI NOTE numbers 45 to 107 are assigned to 64 keys included in the lower key range from the position 7 of the split point, and are configured to designate pitches from A2 to B7, respectively. Are assigned MIDI NOTE numbers 36-60, and are configured to designate pitches C2-C4, respectively.

FIG. 2 is a block diagram showing the configuration of the electronic keyboard instrument according to this embodiment.
The CPU 10 processes the entire operation of the electronic keyboard instrument, and the program ROM 11 stores a program for controlling the processing of the CPU 10. The work RAM 12 is for temporarily storing data during processing by the CPU 10.

  The microphone interface 13 is connected to the microphones 4a and 4b described above. The microphone interface 13 detects whether or not the microphones 4a and 4b are connected to the connection terminals 3a and 3b, and the audio signal detected by the microphones 4a and 4b. Is supplied to the mixer 14.

When the note-on-note offense generated by the CPU 10 based on the key press / release of any key of the keyboard 1 is supplied, the tone generator 15 receives a musical signal having a pitch based on these events. Generate. The generated musical sound signal is mixed with the audio signals from the microphones 4a and 4b by the mixer 14 and supplied to the sound generation unit 16 to generate musical sounds and sounds.
The CPU 10, the program ROM 11, the work RAM 12, the microphone interface 13, the sound source 15, the keyboard 1 and the switch unit 2 such as a guide switch are connected via a bus line 17.

  By having such a configuration, the CPU 10 determines whether the normal mode or the duet mode is selected in response to the operation of the guide switch 2, and when the normal mode is switched to the duet mode, the key range of the keyboard 1 is specified. At the split point position, for example, in normal mode, the key number 60 (pitch is C4) is divided, and the pitch assigned to each key is increased by two octaves for the low key range, and the processing for lowering the octave by two octaves is performed. Further, when the microphone 4a is connected to the connection terminal 3a, the split point position is shifted to the 2 octave low frequency side. Conversely, when the microphone 4b is connected to the connection terminal 3b, the split point position is shifted to the 2 octave high frequency range. Shift to the side.

FIG. 3 is a flowchart showing the entire processing operation of the CPU 10.
When a power supply (not shown) is turned on, an initialization process (step A0) for initializing the internal registers of the CPU 10 and the work RAM 12 is executed. Next, switch processing corresponding to the switch operated from the outside (step A1), microphone processing corresponding to the connection state of the microphone (step A2), keyboard processing corresponding to key press / release corresponding to the keyboard 1 (step A3) , And other processes (step A4) are executed in this order. Among these, steps A1 to A4 are repeatedly executed until the power is turned off.

FIG. 4 shows a detailed flowchart of the switch process (step A1 in FIG. 3). First, it is determined whether or not the duet switch 2 is turned on by an external operation (step B1). If the duet switch 2 is not on, the other switch processing (step B2) is performed and the processing is terminated.
If the duet switch 2 is on, the value of the duet flag DF for determining whether or not the duet mode is set is reversed (step B3). Here, it is determined whether or not the duet flag DF is “1”, that is, the duet mode (step B4). In the case of the duet mode, “60” is stored in the register SP storing the key number corresponding to the split point position (step B5), and then the process proceeds to step B2. If it is not in the duet mode, the process proceeds directly from step B4 to step B2.

FIG. 5 is a detailed flowchart of the microphone process (step A2 in FIG. 3).
First, based on the output from the microphone interface 13, it is determined whether or not the microphone 4a is connected to the connection terminal 3a (step C1). If it is determined that the microphone 4a is connected, the flag MAF is set to “1” (step C2). If it is determined that the connection is not established, the flag MAF is set to “0” (step C3).

Next, it is determined whether or not the microphone 4b is connected to the connection terminal 3b (step C4). If it is determined that it is connected, the flag MBF is set to “1” (step C5), and it is determined that it is not connected. If so, the flag MBF is set to “0” (step C6).
Then, it is determined whether or not the values of the flags MAF and MBF match, that is, whether both flags are “0” or “1” (step C7). If they match, that is, if both microphones are connected or both are not connected, the value of “60” is stored in the register SP, and the value indicates the shift of the pitch in the high key range. “24” is stored in the register SF1, and “24”, which is a value indicating the pitch shift in the low key range, is stored in the register SF2 (step C8).

  On the other hand, if it is determined in step C7 that the values of the flags MAF and MBF do not match, it is determined whether or not the puffer MAF is “1”, that is, only the microphone 4a is connected (step C9). If it is determined that only the microphone 4a is connected, “36” is stored in the register SP, “48” is stored in the register SF1, and “24” is stored in the register SF2 (step C10). Conversely, if it is determined that only the microphone 4b is connected, the value of “86” is stored in the register SP, “24” is stored in the register SF1, and “48” is stored in the register SF2 (step C11).

6 and 7 show a detailed flowchart of the keyboard process (step A3 in FIG. 3).
First, the keyboard 1 is scanned (step D1). By this scanning, it is determined whether or not the state of any of the keys has changed (step D2). If it is determined that there is no change, the process ends. On the contrary, if a change is detected, the key number of the detected key is stored in the register N (step D3).

  Subsequently, it is determined whether or not the duet flag DF is “0”, that is, the normal mode (step D4). If it is in the normal mode, the process proceeds to step D5, where it is determined whether the key state change has been changed from OFF to ON (key depression), or conversely whether it has been changed from ON to OFF (key release). If it is determined that the key has been pressed, the process proceeds to step D6, and a note-on command based on the key number stored in the register N is created. If it is determined that the key has been released, the process proceeds to step D7, and a note-off command based on the key number stored in the register N is created. The note command created in this way is sent to the sound source 14, and a musical tone signal having a pitch corresponding to the key number stored in the register N is generated or stopped.

  On the other hand, if the duet flag DF is “1” in step D4, that is, in the duet mode, the process proceeds to step D9 in FIG. 7 to determine whether the key state change has been changed from off to on (key depression). It is determined whether or not the key has changed to off (key release). If it is determined that the key is depressed, it is determined whether or not the depressed key number stored in the register N is larger than the key number of the key corresponding to the split position stored in the register SP (step D10). . If it is determined that the key is large, it means that the key pressed belongs to the high key range, and the value of the register SF2 is subtracted from the value of the register N (step D11). On the contrary, if it is determined that the key is small, it means that the pressed key belongs to the low key range, and the value of the register SF1 is added to the value of the register N (step D12). Thereafter, the process proceeds to step D6 in FIG. 6, and a note-on command is created based on the changed value of the register N.

If it is determined in step D9 that the key is released, whether or not the released key number stored in the register N is larger than the key number of the key corresponding to the split position stored in the register SP. It is determined (step D13). If it is determined to be larger here, means that the released key belongs to a high key range, the value of the register SF1 from the value of the register N to the summing (step D14). If it is determined that a small Conversely, the released key is meant that belong to a low key range, to subtract the value of the register SF2 to the value of the register N (Step D15). Thereafter, the process proceeds to step D7 in FIG. 6, and a note-off command is created based on the changed value of the register N.

  Thus, in this embodiment, when any of the microphones 4a and 4b is connected, the key range corresponding to the connected microphone side is narrowed. Normally, when using a microphone, the singing is the main one, and the keyboard performance is in charge of only the melody, so a very wide keyboard range is not required. For this reason, the key range assigned to other performers is widened by narrowing the key range corresponding to the performer who performs using the microphone, and this is a problem peculiar to instruments having this duet function. This solves the problem of a narrow key range.

  In this embodiment, the key range assigned to the player who uses the microphone is narrowed by two octaves, and the other player's key range is widened by that amount, but this octave number may be one octave. Alternatively, it may be 3 octaves.

  In this embodiment, the position of the split point is changed by detecting whether or not the microphones 4a and 4b are connected to the connection terminals 3a and 3b. However, the connected microphones 4a and 4b are turned on. It may be detected whether or not sound of a certain level or more is input to the microphone.

1 is an external view of an electronic keyboard instrument to which the present invention is applied. It is a block diagram which shows the structure of the electronic keyboard instrument of FIG. It is the flowchart which showed the whole process of CPU10. It is a detailed flowchart of SW processing (step A1) of FIG. It is a detailed flowchart of the microphone process (step A2) of FIG. It is a detailed flowchart (part) of the keyboard process (step A3) of FIG. FIG. 4 is a detailed flowchart of keyboard processing (step A3) in FIG. 3 (continuation).

Explanation of symbols

1 Keyboard 2 Duet Switch 3a, 3b Microphone Input Terminal 4a, 4b Microphone 10 CPU
11 Program ROM
12 Work RAM
13 Microphone interface 14 Mixer 15 Sound source

Claims (4)

A keyboard having a plurality of keys sequentially assigned with key numbers for designating the pitches of musical notes to be pronounced,
Octave changing means for changing the key number of the key that has been pressed by a preset octave corresponding to the key range to which the pressed key belongs when any key on this keyboard is pressed; ,
Musical tone generation instructing means for instructing the generation of musical tones corresponding to the key number changed by the octave changing means;
External voice input means provided corresponding to each of a plurality of key ranges of the keyboard;
Detecting means for detecting whether any of the external voice input means can input voice;
The key range corresponding to the external voice input unit that is in a voice input enabled state detected by the detection unit is narrowed to a predetermined range, and the key range corresponding to the external voice input unit that is not in a voice input enabled state is set to the predetermined range. Key range changing means to widen the range,
A performance device having   The external audio input means includes a plurality of input terminals to which audio detection means for detecting external audio is connected, and the detection means detects whether the audio detection means is connected to any of the input terminals. The performance device according to claim 1.   The key range changing means is predesignated for each key range of the keyboard when the detecting means is in a state where all of the external voice input means are capable of voice input and when not all are capable of voice input. The performance device according to claim 1, wherein the performance device is set to a range. A keyboard having a plurality of keys sequentially assigned with key numbers for designating the pitches of musical sounds to be pronounced, and external voice input means provided corresponding to each of the plurality of key ranges of the keyboard; In a computer applied to a performance device having
An octave change step for changing the key number of the key that has been pressed by a predetermined number of octaves corresponding to the key range to which the pressed key belongs when any key on the keyboard is pressed; ,
A musical sound generation instruction step for instructing the generation of musical tones corresponding to the changed key number;
A detection step of detecting whether any of the external voice input means is capable of voice input;
A key that narrows the key range corresponding to the detected external voice input means that is in a voice input enabled state and expands the key range corresponding to the external voice input means that is not in a voice input enabled state. Area change step;
A program of performance control processing that executes.

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