JPH0816163A - Musical sound generating device - Google Patents

Abstract

PURPOSE:To provide a musical sound generating device which easily makes possible a wide musical performance including a fast musical performance. CONSTITUTION:An electronic musical instrument 100 is equipped with a keyboard 101 which is operated by a user, a console panel 102 which is provided with a P mode switch, etc., a ROM 104 which is stored with various control programs, various data for musical sound generation, etc., a sound source 106 which generates musical sound waveforms according to musical sound information generated by a CPU 103, and a sound system 10 which radiates musical sounds; when a P mode is set, the CPU 103 allocates the keyboard 101 to an upper key area and a lower key area and performs control so as to generate a musical sound specified in the lower key area on the basis of the key depression and release timing of a key in the upper key area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone generating apparatus mounted on a device such as an electronic musical instrument having a pitch designating switch group for designating the pitch of a musical tone.

[0002]

2. Description of the Related Art A musical tone generator mounted on an electronic musical instrument or the like detects a musical tone with a pitch assigned to a designated switch operated by the user by detecting an operation performed by the user on a designated pitch switch group. Is intended to be pronounced.
A keyboard is a representative example of such a pitch designating switch group.

For example, in an electronic musical instrument having a keyboard as a pitch designating switch group, when playing a musical piece which requires a certain performance technique such as fast tempo, a general user does not have a high performance technique. Therefore, there is a problem that such a music cannot be easily played.

As a solution to such a problem,
For example, a musical tone generating device has been devised which generates a musical tone in each operation when a user's key pressing operation and key releasing operation for each key on the keyboard are detected. According to the electronic musical instrument equipped with this musical sound generator, one operation for one key,
That is, since the musical tones are generated at the time of both the key pressing operation and the key releasing operation, high-speed performance can be easily performed, and the above-mentioned problems can be solved.

[0005]

However, the conventional musical tone generating apparatus mounted on the electronic musical instrument or the like as described above can generate musical tones by depressing and releasing a key. , The user has to specify in advance the musical sound to be produced by the key release operation,
There is a problem in that a wide range of performances cannot be enjoyed easily because the musical sound generated by releasing the operation of one key is fixed.

Since a key switch for designating a musical sound produced by a key release operation is usually provided at a position apart from the pitch designating switch group, it is quick to change this designation during a performance. There is a problem that the key operation is required and it is troublesome. In addition, since this key operation has to be performed, there is a problem that it becomes impossible to concentrate on the performance. Further, in some cases, the user does not want to sound a musical tone by releasing the key during the performance. At this time as well, since a key operation for that is required, the same problem as described above occurs.

By the way, since the electronic musical instrument is a musical instrument that makes good use of electronic technology, it has the advantages that a wide range of timbres and functions can be selected, new music can be easily created, and music can be enjoyed easily compared to acoustic musical instruments. is there. Today's music is diversified along with changes in people's consciousness and progress in science and technology, and it has been desired that electronic musical instruments can easily perform a wide range of performances due to this diversification.

SUMMARY OF THE INVENTION An object of the present invention is to provide a musical tone generating device which can easily perform a wide range of performances including high speed performances.

[0009]

The musical tone generating apparatus of the present invention is mounted on an electronic musical instrument, MIDI equipment or the like having a pitch designation switch group for designating the pitch of a musical tone.

The musical tone generating apparatus of the present invention mounted on such a device has an operation detecting means for detecting the operating state of each designated switch of the pitch designating switch group, and the pitch designating switch group having a preset division. The first designation switch group and the second designation switch group are roughly divided into two groups, and in response to the operation timing for the first designation switch group detected by the operation detection unit, the second designation switch detected by the operation detection unit. And a control means for executing a musical tone generation control for generating a musical tone according to an operation on the switch group.

In the above structure, the operation detecting means is provided with an operation speed at the time of ON operation for each designated switch,
It is desirable to have an operation state detecting means for detecting an operation state such as pressure being turned on, and the control means can be arbitrarily assigned a preset function for the second designated switch group. Is desirable.

[0012]

According to the tone generating apparatus of the present invention, the pitch designating switch group is roughly divided into preset divisions and is divided into the first designated switch group and the second designated switch group, and the designated switch of the first designated switch group. On the basis of the timing at which is operated, a musical sound is generated by the function assigned to the designated switch which is turned on in the second designated switch group.

The musical sound designated by the second designated switch group is muted, for example, when the designated switch of the first designated switch group is turned on, and the designated switch of the first designated switch group is turned off. When pronounced. This allows
While the ON operation of the designated switch of the second designated switch group is maintained, the generation of the musical sound assigned to this designated switch is interrupted according to the ON / OFF operation of the first designated switch group.

Further, the musical sound generating apparatus of the present invention is turned on immediately when the designated switch of the second designated switch group is turned on regardless of the operating state of the designated switch of the first designated switch group. Play the musical sound assigned to the specified switch. As a result, the musical tone assigned to each designated switch of the second designated switch group can be sounded at any time.

Further, in the tone generating apparatus of the present invention, when there is a designated switch that is turned on in the first designated switch group, regardless of whether or not another designated switch in the first designated switch group is turned off. , The sound assigned to the function assigned to the designated switch that is turned on in the second designated switch group is prohibited. As a result, the user can arbitrarily and easily generate the musical sound designated by the second designated switch group.

Further, in the tone generating apparatus of the present invention, the operation detecting means includes the operation state detecting means, and the operation state detecting means detects the first state based on the timing when the designated switch of the first designated switch group is operated. The musical tone designated by the second designated switch group is sounded according to the operating state of the designated switch in which the second designated switch group is turned on.
This allows the user to arbitrarily change the pronunciation of the musical sound designated by the second designated switch group at any time.

Further, the tone generating apparatus of the present invention assigns preset functions such as the tone pitch of the tone, addition of a sound effect, and change of tone color to the second designated switch group, and the first designated switch. Based on the timing at which the designated switch of the switch group is operated, a musical sound is generated by the function assigned to the designated switch that is turned on in the second designated switch group. This facilitates high-speed performance, tremolo performance, and addition of desired acoustic effects, and further widens the range of performance and further enhances musical expression.

[0018]

EXAMPLES Examples 1 and 2 of the present invention will be described below.
Embodiments 2 and 3 will be described in detail in the order of Embodiments 3 with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic musical instrument 100 to which the musical sound generating device according to the first embodiment is applied.
FIG. 2 is an explanatory diagram showing a planar appearance of the electronic musical instrument 100.

As shown in FIG. 2, the electronic musical instrument 100 has a keyboard 101 operated by a user and a case 201 of the main body.
P-mode switch 202 and LED provided above
(Light Emitting Diode) 203.

The P mode switch 202 is a mode in which a tone is generated in response to a depressed key in the lower key range 205 when a key in the upper key range 204 of the keyboard 101 is released (P mode: details will be described later). When the P mode is set, the LED 203 is turned on to notify the user of the setting state. This upper key range 204 and lower key range 2
Reference numeral 05 is preset as a default, but the division of the upper key area 204 and the lower key area 205 can be arbitrarily designated by the user by a switch (not shown).

Although not particularly shown in FIG. 2, on the case 201, in addition to the P mode switch 202, various switches for selecting a timbre, a rhythm, a mode, and the like,
And a display for displaying the setting status of various modes.

Returning to FIG. 1, the structure will be described.
As shown in FIG. 1, the electronic musical instrument 100 includes the keyboard 10 described above.
1 and various switches including the P-mode switch 202, and various display devices including the LED 203.
02 and a CPU (Central Pr
and a ROM (Read Only) storing various control programs, various data for musical tone generation, etc.
Memory) 104 and RA mainly used as a work area
An M (Random Access Memory) 105 and a sound source 10 that generates a musical tone waveform (signal) according to various instructions from the CPU 103.
6 and a sound system 107 which emits sound according to the musical tone signal output from the sound source 106.

An outline of the operation of the above configuration will be described. The CPU 103 includes a keyboard 101 and an operation panel 1
By scanning 02, the operation states thereof are detected, and musical tone information for emitting a musical tone in accordance with the tone color, mode, etc. designated by the user is generated. When this scan detects that the P mode switch 202 is on, the CPU 103 sets the P mode and turns on the LED 203. On the contrary, when the CPU 103 detects that the P mode switch 202 is off, the P mode setting is released. At the same time, the LED 203 is turned off. The detailed operation when setting the P mode will be described later.

The keyboard 101 has two touch response functions, an initial touch response and an after touch response, and the CPU 103 also incorporates the operation state of the user obtained by this function. Also, C
When the P mode is set, the PU 103 allocates the keyboard 101 to an upper key range 204 and a lower key range 205 as shown in FIG. 2, and the lower key range 205 is determined according to the key operation timing of the upper key range 204. The musical tone information for emitting the musical tone designated by the depressed key is generated.

The sound source 106 is, for example, a PCM sound source,
Based on the musical tone information generated by the CPU 103, waveform data stored in a waveform ROM (not shown) is read out, and the read waveform data is processed in accordance with the musical tone information to generate a musical tone waveform, which is used as a musical tone signal. Output to the sound system 107. This tone signal is output from the sound source 106 as a digital signal.

The sound system 107 converts the musical tone signal output from the sound source 106 into an analog signal, amplifies the analog musical tone signal, and inputs the amplified musical tone signal to the speaker to emit a musical tone.

The above is the general operation of the electronic musical instrument 100.
Next, the processing operation will be described in detail with reference to FIGS. First, the overall control process will be described. This overall control processing is performed by the CPU 1 when no interrupt is applied from an interrupt control unit (not shown).
03 is a process to be executed. FIG. 3 is a flowchart showing the overall control process, and the series of processes will be described with reference to FIG.

When a power switch (not shown) is turned on,
First, the CPU 103 initializes (initializes) the contents of the internal RAM and the like (S301). When this initialization is completed, a switch (SW) process for detecting the operation states of various switches including the P-mode switch 202 provided on the operation panel 102 and performing various settings according to the operation states (details will be described later). (Yes) is executed (S302).

When the switch processing is completed, the keyboard 1
The operation state of each key 01 is detected, and keyboard processing (details will be described later) for emitting a musical sound is executed according to the operation state (S303). When the keyboard processing is completed, the key number of the key identified as pressed in this keyboard processing is stored in the internal sounding channel area, and the musical tone information in the sounding channel area corresponding to the key number of the released key is stored. A process of changing to tone information for mute, a process of adding an envelope to a pitch of a tone to be sounded and newly setting pitch data in a corresponding tone generation channel region (S304), and a process of step S302 Return to.

By executing this overall control process, a musical tone is produced in the tone color and mode designated by the user. Next, details of the switch processing in step S302 described above will be described. FIG. 4 is a flow chart showing the switch processing, and the series of processing will be described with reference to FIG.

In this switch processing, first, various switches on the operation panel 102 are scanned (S401),
When this scanning is completed, it is next determined whether or not the P mode switch 202 is turned on. P-mode switch 20
If it is determined that 2 is turned on, the P mode is set by setting 1 in the register P inside the RAM 105 (S403). Conversely, if it is determined that the P mode switch 202 is turned off, 0 is set in the register P. Is set (S404).

In this way, when the P mode is set by the operating state of the P mode switch 202, the same processing is executed for the other switches (S405), and the series of processing ends. In addition, when 1 is set in the register P in the process of step S403, the LED 203 is thereby turned on, and the user is notified that the P mode is set.

Next, details of the keyboard processing in step S303 shown in FIG. 3 will be described. Keyboard processing, keyboard 10
This is a process for detecting a user's operation for No. 1 and for producing a musical sound according to the detection result.
Corresponds to the processing executed by the musical sound generation device according to. FIG. 5 is a flowchart showing the keyboard processing of the first embodiment, and the series of processing will be described with reference to FIG.

In this keyboard processing, first, it is determined whether or not the value of the register P is 1, that is, whether or not the P mode is set (S501). If it is determined that the value of the register P is not 1, the keyboard 101 is scanned, and a normal performance process is performed to emit a musical tone at the pitch assigned to the key detected as a key depression in this scanning (S502). , A series of processing ends.

If it is determined in step S501 that the value of the register P is 1, that is, if the P mode is set, then the data representing the current state of the depressed key in the lower key area 205 is stored. A memory L process (details will be described later) which is a process is executed (S503), and a sounding / silence process (details which will be described later) which is a process for determining a musical sound to be sounded and muted is subsequently executed (S504). A series of processing ends.

As described above, in the keyboard processing, another processing is performed depending on whether or not the P mode is set.
Next, the memory L process will be described in detail. Memory L
As described above, the process is a process of storing the data representing the key depression state of the lower key area 205 in a predetermined area (memory L) of the RAM 105, and the data stored in this area is the upper key area. It is treated as specifying a musical sound to be pronounced when the key 204 is released. FIG. 6 is a flowchart showing the memory L processing of the first embodiment, and the series of processing will be described with reference to the figure.

In this memory L processing, first, the lower key area 205 is scanned (S601). Lower key range 20
When the scanning of No. 5 is completed, next, by comparing with the previous scanning result for the lower key area 205 (currently stored in the memory L), whether or not an on event has occurred in the lower key area 205, that is, It is determined whether or not there is a newly pressed key in the lower key area 205 (S602). If it is determined that the on-event has not occurred, step S6 described later
If it is determined that an on event has occurred, the pitch assigned to this key and the velocity (key pressing speed) when the key is hit obtained by the touch response function are used as operation information. Write to memory L (S
603).

When the operation information is written in the memory L, whether or not an off event has occurred in the lower key area 205, that is,
It is determined whether a key release has newly occurred in the lower key area 205 (S604). If it is determined that the off event has not occurred, the series of processing is ended here. Conversely, if it is determined that the off event has occurred, the stored information written in the memory L corresponds to the key in which the off event has occurred. The data is erased (S605), and a series of processing is ended.

As described above, by executing the memory L process, the data representing the latest operation state in the lower key area 205 is always written in the memory L. Next, the sound generation / mute processing of step S504 shown in FIG. 5 will be described in detail. FIG. 7 is a flow chart showing the sound generation / mute processing of the first embodiment, and the series of operations will be described with reference to the figure. Here, a timer T described later
Is a variable secured in the RAM 105 (see FIG. 1) and is for measuring the time elapsed since the key in the upper key area 204 was released. The value of the timer T is updated by the timer interrupt process executed every predetermined time.

First, the upper key area 204 is scanned (S
701). When the scanning of the upper key area 204 is completed, it is then determined whether or not an on event has occurred in the upper key area 204, that is, whether or not a new key has been pressed in the upper key area 204 (S702), and an on event has occurred. If it is determined that the key has been played, then a normal tone generation process is performed in which a tone is generated at the pitch assigned to the key in which the on event has occurred (S703). By this sound generation processing, a CPU (not shown)
Data is newly written in the tone generation channel area of the internal RAM 103.

When the normal tone generation processing of the upper key range 204 is completed, if a musical tone is being sounded at the pitch specified by the key of the lower key range 205, it is muted (S70).
4) The timer T is stopped and reset (S705), and the process proceeds to step S706.

If it is determined in step S702 that an on event has not occurred in the upper key area 204,
That is, when it is determined that there is no new key depression in the upper key area 204, it is determined whether or not an off event has occurred next in the upper key area 204, that is, whether or not there is a newly released key in the upper key area 204. Yes (S706). If it is determined that the off event has not occurred in the upper key area 204, the process proceeds to step S712 described later, and conversely, if it is determined that the off event has occurred, then the musical tone corresponding to the key in which the off event has occurred is generated. A normal muffling process for muting is executed (S707). By this mute processing, the data corresponding to the key in which the off event has occurred is erased from the sound generation channel area.

When the mute processing is completed, the timer T
(S708), and then the lower key range 205
Are scanned (S709). When the scanning of the lower key area 205 is completed, it is then determined whether or not an off event has occurred in the lower key area 205, that is, whether or not there is a newly released key in the lower key area 205 (S710). If it is determined that the off event has not occurred, the series of processing ends here, and conversely, if it is determined that the off event has occurred, the tone corresponding to the key for which the off event occurred is muted if it is being sounded. The muffling process is executed (S711) and the series of processes is ended.

Since the contents stored in the memory L only store the data indicating the key pressed in the lower key area 205 at present, even if a sound is produced in the contents of the memory L, a new key release is performed. The tone corresponding to the played key remains sounding. The mute of the musical sound corresponding to this newly released key is
This is performed by the processing in step S711.

If it is determined in step S706 that an off event has not occurred in the upper key area 204, that is, there is no newly released key in the upper key area 204,
Next, it is determined whether the value of the timer T is larger than the predetermined value M (S712). If it is determined that the value of the timer T is less than or equal to the predetermined value M, the process proceeds to step S709. Conversely, if it is determined that the value of the timer T is larger than the predetermined value M, the timer T is stopped and reset (S71).
3) Then, a tone generation process for generating a tone with the contents (including the key pressing speed) stored in the memory L is executed (S714), and the process proceeds to step S709.

In the first embodiment, as described above, the tone generation processing based on the contents of the memory L is not performed until the time corresponding to the predetermined value M has elapsed after the off event (key release) occurred in the upper key area 204. I am trying. This is due to the following reasons.

For example, when the user performs continuous performance operations in the upper key range 204, there is usually little time from the release of one key to the pressing of the next key, or even a very short time. Is. Therefore, the lower key area 205 is immediately released for each key release.
When the musical sound designated by is sounded, the musical sound is sounded only for a very short time. From this, it is considered that the user often does not want to pronounce the musical sound specified in the lower key range 205 when performing the continuous performance operation.

On the other hand, in order to prevent the tone specified by the lower key range 205 from being generated, it is sufficient that the lower key range 205 is not depressed. For example, when a continuous performance operation is performed partially, each time. Since the lower key area 205 must be pressed and released, the user's operation load on the lower key area 205 increases. Therefore, in order to reduce the burden on the user, the upper key range 204
Even if the key is released, the musical tone specified in the lower key range 205 is not sounded.

The predetermined value M corresponds to the time from when the key is released in the upper key range 204 until the tone specified by the lower key range 205 is sounded, but its proper value is set by the user. It depends on your ability and the tempo of the music you play. For this reason, it is difficult to give a concrete example, but a time length of about 32nd notes seems to be appropriate as the value of M. Since the appropriate value of M varies depending on the situation, it is desirable that the user can arbitrarily set the value.

Here, a brief description of the outline of the above-described sounding / muffling processing is as follows. That is, each time the key in the upper key range 204 is released, the lower key range 20
A single note or chord designated by the key No. 5 is sounded at the speed at which the key is pressed, and when a new key is pressed in the upper key range 204, the sound is immediately terminated. Further, when a certain key is released while the tone of the key in the lower key range 205 is being sounded in this way, the tone corresponding to the released key is muted.

As described above, the musical tone can be generated by releasing the key in the upper key range 204. However, since the musical tone to be generated can be arbitrarily designated by the key in the lower key range 205, the user can start high-speed playing. You can enjoy a wide range of various performances. For performances other than high-speed performance,
For example, each time a key release operation is performed in the upper key range 204, a musical tone specified in the lower key range 204 is sounded, so that there is a performance used as a so-called back rhythm.

Further, since the musical tone designated by the key in the lower key range 205 is generated by changing the tone color and volume according to the key pressing speed of the key, the user can enjoy a wider range of performances.

Tones can be specified by the keys in the lower key area 205 by the time the keys in the upper key area 204 are released, and since the keys in the lower key area 205 can be left depressed, the user can Can easily operate the lower key area 205 with a margin. Therefore, the user can easily perform a wide range of performances including high-speed performances.

FIG. 8 is an explanatory diagram showing an example of an actual pronunciation according to the first embodiment. When the same operation is performed on the keyboard 101, the sound actually produced by this operation in the normal mode and the P mode is shown. It is a musical score representing the height. FIG.
In the above, the notes written in the staff having the treble clef correspond to the upper key range 204, and the notes written in the staff having the treble clef correspond to the lower key range 205.

Since the normal mode is a mode in which a musical tone is produced at the pitch assigned to the depressed key, the production in the normal mode in FIG. 8 corresponds directly to the operation on the keyboard 101. As is apparent from FIG. 8, in the P mode, different from the normal mode, when the key in the upper key range 204 is released (this is at the position where the rest symbol is written in the staff having the treble clef). Corresponding), lower key range 2
It can be seen that the pitch of the key pressed at 05 is pronounced.

In the first embodiment, the lower key range 20
The pitch designated by the key of No. 5 is the pitch previously assigned to that key. For example, the pitch assigned to this key is raised by one octave as a whole.
The pitch assignment may be changed when the mode is set.

Further, the sound volume produced when the keys in the upper key range 204 are released may be made variable by the pressure applied to the keys in the lower key range 205. As a result, acoustic effects such as vibrato and tremolo can be added at any time. In the first embodiment, the value of the timer T is incremented by hardware, but in the case where the user plays along with the automatic accompaniment, the value may be incremented according to the tempo of the accompaniment.

Next, a second embodiment will be described. The second embodiment is applied to the electronic musical instrument 100 shown in FIGS. 1 and 2. Therefore, the reference numerals given to the electronic musical instrument 100 are used as they are, and only different portions will be described.

In the sounding / muffling process of the first embodiment, the lower key range 205 is generated only when the key in the upper key range 204 is released.
Since the musical tone specified by is pronounced, the lower key range 2
There is a problem that the 05 key does not allow arbitrary pronunciation. The second embodiment avoids this problem.

FIG. 9 is a flow chart showing the sound generation / mute processing of the second embodiment, and the series of processing will be described with reference to FIG. In the sounding / muffling process of the second embodiment, the timer T'and the timer T'are used in the process. The timer T ′ is the same as the timer T, and measures the time elapsed since the key in the lower key area 205 was pressed.

First, the upper key area 204 is scanned (S9
01), when the scanning of the upper key area 204 is finished, whether or not an on-event has occurred in the upper key area 204 next,
That is, it is determined whether or not there is a new key depression in the upper key area 204 (S902). If it is determined that an on event has occurred in the upper key area 204, then step S9 described below will be performed.
If it is determined that the ON event has not occurred in the upper key range 204, that is, if there is no new key press in the upper key range 204, the OFF event occurs in the upper key range 204 next. Whether it has occurred,
That is, it is determined whether or not there is a newly released key in the upper key area 204 (S903).

If it is determined that the off event has not occurred in the upper key area 204, the process proceeds to step S912 described later, and conversely, if it is determined that the off event has occurred, the process proceeds to step S904.

In step S904, the upper key range 20
In step 4, a normal muffling process is performed to mute the tone of the key in which the off event (key release) has occurred, and when this muffling process ends, the timer T is started (S905). With the start of the timer T, the time elapsed after the key in the upper key area 204 is released is measured.

When the timer T is started, the lower key area 205 is next scanned (S906), and when the lower key area 205 has been scanned, whether or not an ON event has occurred in the lower key area 205, that is, It is determined whether or not there is a newly pressed key in the lower key area 205 (S907). When it is determined that the on-event has not occurred, the process proceeds to step S910, and when it is determined that the on-event has occurred, on the other hand, a normal sound is generated to generate a musical tone at the pitch assigned to the key on which the on-event has occurred. Execute the process (S
908), and then the timer T ′ is started (S9
09). By starting this timer T ',
The time elapsed since the key in the lower key area 205 was pressed is measured.

When the timer T'is started, it is next determined whether or not an off event has occurred in the lower key area 205, that is, whether or not there is a newly released key in the lower key area 205 (S910). . If it is determined that the off event has not occurred in the lower key area 205, a series of processing is ended here, and conversely, if it is determined that the off event has occurred in the lower key area 205, that is, there is a newly released key. If it is determined that the key is released, the mute process for mute the musical tone being sounded by the released key is executed (S911), and the series of processes is ended.

In step S903, if it is determined that the off event has not occurred in the upper key range 204, that is, if there is no newly released key, then it is determined whether the value of the timer T is larger than the predetermined value M. Or not (S91
2). When it is determined that the value of the timer T is less than or equal to the predetermined value M, the process proceeds to step S906, and conversely, the timer T
If it is determined that the value of is larger than the predetermined value M, the timer T is stopped and reset (S913), and a tone generation process is executed to generate a tone with the contents (including the key pressing speed) stored in the memory L. (S914), step S9
The processing moves to 06.

If it is determined in step S902 that an on event has occurred in the upper key range 204, that is, if there is a newly pressed key, the key is assigned to the key in the upper key range 204 in which the on event occurred. Normal tone generation processing is executed to generate a musical tone at the set pitch (S91).
5). When the normal sounding process of the upper key range 204 is completed, it is next determined whether the value of the timer T ′ is 0 or whether the value of the timer T ′ is larger than the predetermined value N (S).
916). As will be described later, when the value of the timer T ′ is 0, the timer T ′ is stopped or when the new key depression is not performed in the lower key range 205, and the value of the timer T ′ is a predetermined value. When the value is larger than the value N, it means that a predetermined period has elapsed since a new key was pressed.

If the value of the timer T'is not 0 and the value of the timer T'is not more than the predetermined value N, then step S
When it is determined that the value of the timer T ′ is 0 or the value of the timer T ′ is larger than the predetermined value N, the process proceeds to the processing of 919, and then the timer T ′ is stopped and reset (S917). When the timer T'is stopped, if a musical tone is being sounded at the pitch specified by the key of the lower key range 205, then this is all muted (S918), and the timer T is stopped and reset (S919). , And proceeds to the process of step S903.

As described above, in the second embodiment, when a key in the lower key range 205 is newly pressed, a musical tone is sounded at the pitch assigned to that key. You can enjoy a wide range of performances.

By the way, it is assumed that the lower key area 205 is depressed simultaneously with the upper key area 204. In this case, the lower key range 20
When the key depression for 5 is performed slightly earlier than the key depression for the upper key range 204, the musical tone designated in the lower key range 205 is hardly sounded. In Example 2,
In order to avoid this inconvenience, when a key in the lower key range 205 is newly pressed, the musical tone designated by the key is sounded only for a certain period.

That is, a new key depression is judged in the lower key area 205, and the timer T'is started and then the timer T '
Until it is judged that the value of is larger than the predetermined value N,
The tone specified by the lower key range 205 is not muted. Therefore, the user can generate a specified musical sound at any time by newly pressing a key in the lower key range 205, and further widen the range of performance.

As the value of N, it is desirable that the shortest note used in the musical composition to be played corresponds to the tempo, and since this is different for each musical composition, it is desirable that it can be set by the user. As a concrete value of N,
Assuming that a note having a short sounding time in a piece of music corresponds to a value corresponding to a time length of, for example, a sixteenth note, it is considered appropriate.

FIG. 10 is an explanatory diagram showing an example of actual pronunciation according to the second embodiment. Similar to FIG. 8, the actual operation is performed when the same operation is performed on the keyboard 101 in the normal mode and the P mode. It is a musical score representing the pitch to be played.

As shown in FIG. 10, in the second embodiment, the lower key range 205 is set at the head of each measure in both the normal mode and the P mode.
The musical sound of the pitch specified by the key is pronounced. It can be seen from the above that Example 2 can enjoy a wider range of performances than Example 1.

Next, a third embodiment will be described. Like the second embodiment, the third embodiment is applied to the electronic musical instrument 100 shown in FIGS. 1 and 2. Therefore, the reference numerals given to the electronic musical instrument 100 are used as they are, and only different portions will be described.

In the sounding / muting process of the first embodiment, the pitch of the key pressed in the lower key range 205 is pronounced every time the key in the upper key range 204 is released, but the upper key range 204
Therefore, there may be a case where the user does not want to pronounce the musical sound specified in the lower key range 205 when there is still a depressed key. In such a case, if the musical sound specified in the lower key range 205 is pronounced every time the key in the upper key range 204 is released, this pronunciation is troublesome, and the lower key is released when the upper key range 204 is released. This causes a trouble that it is troublesome to operate so that the musical sound designated in the area 205 is not pronounced.

In the third embodiment, the problem of the first embodiment is avoided, and the tone specified by the lower key range 205 is not sounded if any one key in the upper key range 204 is depressed. is there. FIG. 11 is a flow chart showing the sound production / mute processing of the third embodiment, and the series of processing will be described with reference to FIG.

First, the upper key area 204 is scanned (S
1101). After scanning the upper key area 204,
Next, it is determined whether or not an on event has occurred in the upper key area 204, that is, whether or not there is a new key depression in the upper key area 204 (S1102), and if it is determined that an on event has occurred, then this on event Normal tone generation processing is performed to generate a tone at the pitch assigned to the generated key (S1103).

When the normal tone generation processing of the upper key range 204 is completed, if a musical tone is being sounded at the pitch designated by the key of the lower key range 205, then all of this is muted (S11).
04), the timer T is stopped and reset (S1105), and the process proceeds to step S1106.

If it is determined in step S1102 that an on event has not occurred in the upper key range 204, that is, if no new key has been pressed in the upper key range 204, an off event has occurred in the upper key range 204 next. It is determined whether or not there is a newly released key in the upper key area 204 (S1106). If it is determined that the off event has not occurred in the upper key area 204, the process proceeds to step S1112 described later,
On the other hand, if it is determined that an off event has occurred, then normal mute processing is executed to mute the musical sound corresponding to the key for which this off event has occurred (S1107).

When this mute processing is completed, the timer T
(S1108), and then lower key range 2
05 is scanned (S1109). When the scanning of the lower key area 205 is completed, it is determined whether or not an off event has occurred in the lower key area 205, that is, whether or not there is a newly released key in the lower key area 205 (S1110). If it is judged that the off event has not occurred, the series of processing ends here, and conversely, if it is judged that the off event has occurred, the mute processing to mute the tone corresponding to the key for which the off event occurred is being generated. Is executed (S1111),
A series of processing ends.

If it is determined in step S1106 that an off event has not occurred in the upper key range 204, that is, there is no newly released key in the upper key range 204, the next key in the upper key range 204 is ON. Is determined, that is, whether or not there is a key pressed in the upper key range 204 (S1112). If it is determined that there is a key that is on in the upper key area 204, the process proceeds to step S1109. On the contrary, if it is determined that there is no key that is on in the upper key area 204, the value of the timer T is set to the predetermined value M. It is determined whether or not a predetermined period has passed since the off event occurred in the upper key area 204 (S1113).

If it is determined that the value of the timer T is less than or equal to the predetermined value M, the process proceeds to step S1109. Conversely, if it is determined that the value of the timer T is greater than the predetermined value M, the timer T is stopped and reset. (S111
4) The tone generation processing for causing the tone to be generated with the content (including the key pressing speed) stored in the memory L is executed (S1115),
The process moves to step S1109.

As described above, in the third embodiment, when it is determined that there is a key still depressed in the upper key range 204,
Since the sound generation processing based on the contents of the memory L is not executed and the musical sound designated by the lower key area 205 is not sounded, the above-mentioned inconvenience is avoided.

FIG. 12 is an explanatory diagram showing an example of an actual pronunciation according to the third embodiment. Similar to FIG. 8, when the same operation is performed on the keyboard 101 in the normal mode and the P mode, the actual pronunciation is performed. It is a musical score representing the pitch to be played.

As shown in FIG. 12, in the third embodiment, in the P mode, while the musical tone of the first half note of the measure is being sounded, even if the key is released in the other upper key range 204, the lower key is used. It is understood that the musical sound designated in the area 105 is not sounded.

In the present embodiment (Embodiments 1 to 3), the designation by the key of the lower key range 205 is the pitch of the musical tone to be pronounced, but the present invention is not limited to this. For example, in the second embodiment, when a key in the lower key range 205 is pressed, a sound effect is added, and when a key in the lower key range 205 is pressed and a key in the upper key range 204 is released. Alternatively, the functions may be sorted according to the timing at which the upper key range 204 is operated so that a musical tone having a designated pitch is simply generated.

In such a case, it can be realized by only changing the process of step S908 in the flowchart of FIG. Further, the case of changing the timbre instead of the above-described acoustic effect can be realized in the same manner. In other words, these can be realized by allocating the function assigned to the lower key area 205 according to the operation timing of the key in the upper key area 204.

As described above, the present invention can be applied according to the function of the mounted device.
For this reason, for example, it is easy to play high and low-pitched tremolo, and an interesting sound effect can be added by playing a melody with the right hand while holding an arbitrary chord in the lower key range 205 with the left hand. In addition to this, various playing methods are possible, and the user can devise and create a unique playing method, which can be applied to actual playing.

Further, in the present embodiment, the keyboard 101 is only divided into the two areas of the upper key area 204 and the lower key area 205, but the lower key area 205 is further divided into a plurality of areas, which are different in each area. Functions (sound effects, timbre, etc.)
May be specified. Even in such a case, since the tone is sounded by the function specified in the lower key range 205 by operating the key in the upper key range 204,
Broadly speaking, it is divided into two areas.

Further, although the present embodiment applies the present invention to the electronic musical instrument 100 having the keyboard 101, the present invention is not limited to this, and is provided with a designation switch for designating the pitch of a musical tone to be sounded. The present invention can be applied to any of the above. Therefore, the musical tone generating apparatus of the present invention can be easily mounted on a keyboard dedicated to control.

[0092]

As described above, in the musical tone generating apparatus of the present invention, the pitch designating switch group is roughly divided into preset divisions and is divided into the first designated switch group and the second designated switch group. Since the musical sound designated by the second designated switch group is generated at the timing when the designated switch of the first designated switch group is operated, the user can easily enjoy a wide range of performances including high-speed performances.

Further, the first designated switch group is operated by arbitrarily assigning to the second designated switch group functions such as pitch of musical tone, addition of sound effect, and change of tone color. Since various musical tones are produced according to the timing, high-speed performance, tremolo performance, and addition of desired acoustic effects are facilitated, and the range of performance can be further expanded.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic musical instrument to which a first embodiment is applied.

FIG. 2 is an explanatory diagram showing a planar appearance of an electronic musical instrument.

FIG. 3 is a flowchart showing overall control processing.

FIG. 4 is a flowchart showing a switch (SW) process.

FIG. 5 is a flowchart showing keyboard processing according to the first embodiment.

FIG. 6 is a flowchart showing a memory L process of the first embodiment.

FIG. 7 is a flowchart showing a sounding / muffling process of the first embodiment.

FIG. 8 is an explanatory diagram showing an actual pronunciation example according to the first embodiment.

FIG. 9 is a flowchart showing a sounding / muffling process of the second embodiment.

FIG. 10 is an explanatory diagram showing an actual pronunciation example according to the second embodiment.

FIG. 11 is a flowchart showing a sounding / muffling process of the third embodiment.

FIG. 12 is an explanatory diagram showing an actual pronunciation example according to the third embodiment.

[Explanation of symbols]

 100 electronic musical instrument 101 keyboard 102 operation panel 103 CPU 104 ROM 105 RAM 106 sound source 107 sound system 202 P-mode switch 203 LED 204 upper key range 205 lower key range

Claims (6)

[Claims] 1. A pitch designation switch group for designating a pitch of a musical tone, an operation detection means for detecting an operation state of each designated switch of the pitch designation switch group, and the pitch designation switch group in advance. The operation detecting means is roughly divided into a first designated switch group and a second designated switch group, and the operation detecting means is responsive to an operation timing for the first designated switch group detected by the operation detecting means. And a control means for executing a musical tone generation control for generating a musical tone in accordance with the operation of the second designated switch group detected by the musical tone generating device. 2. The musical tone generation control executed by the control means, when the operation detecting means detects an off operation for a designated switch of the first designated switch group, the second tone generation control is performed.
2. The musical tone generating apparatus according to claim 1, further comprising control for causing the musical tone assigned to the designated switch whose ON operation has been detected by the operation detecting means in the designated switch group. 3. The musical sound generation control executed by the control means, in addition to the control according to claim 2, when the operation detecting means detects an ON operation for the designated switch of the second designated switch group, 2. The musical tone generating apparatus according to claim 1, further comprising control for immediately producing a musical tone assigned to the designated switch which has detected the ON operation. 4. The musical tone generation control executed by the control means is such that the operation detecting means detects an OFF operation in the first designated switch group and the ON operation is performed in the first designated switch group. 2. A control for causing a musical sound assigned to a designated switch in which the operation detecting means detects an ON operation in the second designated switch group when the switch is not detected, inclusive. Tone generator. 5. The operation detecting means includes operation state detecting means for detecting a predetermined operation state performed by a user with respect to each designated switch of the pitch designating switch group, and the musical tone generation performed by the control means is performed. 2. The musical sound generating apparatus according to claim 1, wherein the control includes a control for producing a musical sound according to the operation state detected by the operation state detecting means. 6. The musical tone generation control executed by the control means includes control for assigning a preset function to the second designated switch group and causing a musical tone to be generated according to the function. Item 1. The musical sound generating device according to item 1.