JP2000194369A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the electronic musical instrument which can assign reference registers used frequently for a musical performance to respective key areas without any troublesome adjustment when a keyboard is divided into the key areas. SOLUTION: When the keyboard is divided into two key areas, an octave shift quantity SF1 is calculated from the original octave value o1 of the key positioned in the center of a 1st key area and the octave value so1 of the reference register of timbre set to the 1st key area (S405 to S415). The original octave values of the respective keys in the 1st key area are shifted by the octave shift quantity SF1 (S420 to S440). Consequently, the reference registers by the timbre are arranged nearly in the centers of the respective key areas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument which can be played by dividing a keyboard into a plurality of key ranges.

[0002]

2. Description of the Related Art Conventionally, as described in Japanese Patent Publication No. 62-35118, there is known an electronic musical instrument which can be played by dividing a keyboard into a plurality of key ranges. The electronic musical instrument described in this publication has an octave shift function, and based on the original range assigned to the keyboard, the range is shifted by a predetermined number of octaves by a switch operation, and each key is shifted. The range assigned to the region can be changed.

[0003]

By the way, when playing a musical instrument, depending on the music, the musical range within which the musical instrument can sound is
In many cases, only a narrow range of a few octaves at a central position is used (hereinafter, this narrow range is also referred to as a reference range). When performing such a musical composition, the electronic musical instrument described in the above publication can divide the keyboard into key ranges of two to three octaves. Can be secured above. However,
If the sound is divided into a plurality of key ranges, the range already assigned to each key range does not match the reference range, so the range to be allocated to each key range must be changed.

Since the electronic musical instrument has the octave shift function as described above, it is not impossible to change the range assigned to each key range. However, the octave shift function of the electronic musical instrument is merely a function for moving a key range of a predetermined number of octaves, so that it is quite troublesome to assign the reference range to each key range. There was such a problem.

[0005] Specifically, for example, even when it is desired to assign the same pitch reference range to a plurality of key ranges,
The direction in which the range is shifted depends on whether the target key range is on the bass side or on the treble side, and the number of octaves for shifting the range is dependent on how far the bass (or treble side) is. Because it will change
The octave shift must be adjusted while considering the relationship between the position of the key range and the range to be set, and this alone is sufficiently troublesome.

[0006] In addition, when the timbre to be set for each key range changes, the absolute pitch of the reference range also changes depending on the timbre. That is, for example, for a bass tone, the reference range is relatively low, and for a piccolo tone, the reference range is relatively high. For this reason, it is necessary to first determine the reference range to be set in consideration of the timbre, and then perform the octave shift adjustment while considering the relationship between the position of the key range and the range to be set, which further increases the trouble. It will be.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to divide a keyboard into a plurality of key ranges, without making any troublesome adjustments, to use a standard that is frequently used in performance. It is an object of the present invention to provide an electronic musical instrument capable of assigning a range to each key range.

[0008]

Means for Solving the Problems and Effects of the Invention According to the present invention, which has been made to achieve the above object, a keyboard dividing means capable of dividing a keyboard into a plurality of key ranges is provided. The electronic musical instrument comprises a range setting means for allocating a range to each key range so that a sound within a predetermined reference range is included in each key range.

In this electronic musical instrument, the keyboard dividing means includes:
The keyboard is divided into a plurality of key ranges. The boundary of the key range divided by the keyboard dividing means is desirably configured so that the player can specify an arbitrary position using a key or another switch. In this case, the boundary of the designated key range is determined. Is stored in a memory or the like. Alternatively, the key range may be divided at an unchangeable preset position set in advance near the center of the keyboard. In this case,
It is not necessary to store the boundary of the key range each time the operation for dividing is performed.

When the boundaries of the key ranges are stored in a memory or the like, data that can uniquely identify the boundaries themselves may be stored, but other data that can substantially grasp the boundaries of the key ranges may be used. You can remember what you have, for example,
A list of keys belonging to each key area may be stored for each key area, or which key area belongs to each key may be stored in a table.

When the division position can be set arbitrarily,
All the keys may be set as boundaries, or only specific keys (for example, between BC and EF) may be set as boundaries. Furthermore, a boundary cannot be set only in the range of one octave on the lowest note side (or the highest note side), or cannot be set unless two boundaries are separated by more than one octave when dividing into three key ranges. For example, a restriction may be made so that a boundary cannot be set unless a specific position condition is satisfied.

After the boundaries of the key ranges are determined in this way, when generating a musical tone, the tone generation mode (for example, The tone generation mechanism is controlled so that the pitch and timbre change. The range setting means assigns a range to each key range so that a sound within a predetermined reference range is included in each key range.

The width of the reference range is completely arbitrary if transposition is allowed, but even if the transposition is not performed, the range should be transposed if there is a range of up to one octave. It is possible to assign a range so that sounds in the reference range are included in the key range. Further, depending on the key range dividing method or the like, it is possible to prevent transposition even if a narrower range is used as the reference range. For example, if at least one octave of the key range is secured in the key range dividing means, even if the reference range is set to only one note, the sounds in the reference range are not transposed without transposition. A range can be assigned to be included in the key range.

With such a range setting means, whether the actual position of each key range is on the low side or the high side, or what kind of range has been allocated to each key range before division Regardless of how many octaves the divided key range has, the range including the sound in the reference range can be assigned to each key range.

Therefore, according to the electronic musical instrument of the present invention,
By setting the central range that is frequently used in performance as the above-mentioned reference range, when the keyboard is divided into multiple ranges, it is not necessary to make troublesome adjustments while considering the relationship between the range and the range However, it is possible to assign a central range frequently used in performance to each key range.

Note that the range which is assumed to be frequently used in the electronic musical instrument to which the present invention is applied differs according to various conditions such as a tone color and a range unique to the electronic musical instrument. Of course, the sounds may be different for each electronic musical instrument.

Next, an electronic musical instrument according to a second aspect of the present invention includes tone color setting means capable of setting a tone color for each key range divided by the keyboard dividing means, wherein the tone range setting means determines a tone color for each tone color. The key range is assigned to each key range so that the sound in the reference range obtained is included in each key range.

In this electronic musical instrument, the tone color setting means includes:
The tone color is set for each key area divided by the keyboard dividing means. Specifically, the tone color set by manual operation or the like is stored in the memory for each key range or for each key. Thereafter, when generating a musical tone, the tone generation mechanism is controlled so as to sound with a set tone color according to which key range the key in the depressed state belongs to.

As described above, the range setting means assigns a range to each key range so that the sound in the reference range is included in each key range. Is determined for each tone, so if the tone set for a certain key range is a tone that frequently uses a high range, the high range is assigned to that key range, while the tone set for a certain key range is If the tone uses a low range frequently, the low range is assigned to the key range.

Therefore, according to the electronic musical instrument of the present invention, when the keyboard is divided into a plurality of key ranges and different timbres are set in each of the key ranges, the relationship between the key ranges and the timbres is considered. A central range frequently used in performance can be assigned to each key range without performing troublesome adjustment, and the range becomes an optimum range according to the timbre.

Also, a function of assigning a plurality of tones to the same key range and causing different tones to sound together with one key-on (for example, a so-called layer function in a synthesizer-type electronic musical instrument, or a digital piano) So-called dual (Du)
al) electronic musical instruments with functions) are known,
Also in such an electronic musical instrument, the configuration described in claim 2 can be adopted. In this case, the tone range setting means assigns a tone range to each key range such that a sound in the reference tone range is included in each key range for each of two or more tone colors set simultaneously for each key range or each key. become.

In the electronic musical instrument of the present invention, for example, two or more tones can be selected, but two or more tones can be selected for each divided key range. A tone that cannot be set individually (that is, a tone that uses the same tone in a plurality of key ranges even when divided) can be considered. Even in such an electronic musical instrument, it is preferable that the above-mentioned reference range be determined for each timbre, and the ranges be assigned to the respective key ranges so that the sounds in the reference range are included in the respective key ranges. Although two or more timbres can be selected, it is conceivable that two or more timbres include only timbres that frequently use the same timbre. In this case, it is not necessary to define the reference timbre for each timbre. Is enough.

Next, in the electronic musical instrument according to the third aspect, the sound range setting means may shift the sound range which is shifted in octave units from the sound range assigned to each key range before the division. It is characterized in that it is assigned to each key range.

According to this electronic musical instrument, the range to be assigned to each key range by the range setting means is a range shifted in octave units from the range assigned to each key range before division. Therefore, for example, the key corresponding to the sound "C" is always assigned the sound "C".

Therefore, according to the electronic musical instrument of the third aspect, there is no transposition relationship between the two or more key ranges, and the performance is performed using the plurality of key ranges simultaneously. It does not make the performance sound uncomfortable. Next, the electronic musical instrument according to claim 4, wherein the range setting means shifts the reference range within an octave unit with respect to the range assigned before the division to each key range. Is assigned to each of the key ranges so as to make the closest to the center position of each of the key ranges.

In this electronic musical instrument, the range setting means includes:
Since the reference range is closest to the center position of each key range, if the key range is sufficiently wider than the reference range, assigning a range that extends to both the lower range and the higher range than the reference range to that key range. Become. Moreover, since this assignment is performed within a range that is shifted in octave units with respect to the range assigned before the division to each key range, the breadth of the range and the treble range that are on the lower side of the reference range. Although the ranges of the ranges on the side do not exactly match, there is no transposed relationship between the ranges of the two or more key ranges. Performing by using these multiple ranges simultaneously It does not make the performance sound uncomfortable.

According to the electronic musical instrument of the fourth aspect configured as described above, not only the same operation and effect as those of the electronic musical instrument of the third aspect but also the reference musical range can be obtained. Because it is closest to the center position, it is possible to play using the most convenient range in the key range compared to the case where the reference range is assigned to the end of each key range, for example, the pitch of the range used Even if the difference is relatively large, there is a high possibility that the music can be played without any problem.

[0028]

Next, an embodiment of the present invention will be described with reference to an example. The electronic musical instrument described below includes a keyboard 10, an operation panel 12, a CPU 1 as shown in FIG.
4, ROM 16, RAM 18, and tone generator 20
Are connected to each other via a bus 22. The tone generator 20 includes a D / A converter 2.
4, an amplifier 26 and a speaker 28 are connected.

The keyboard 10 has 88 white and black keys in the case of the present electronic musical instrument, and is used as an operator for instructing a musical tone at the time of performance, as is well known. Further, when the keyboard 10 is divided into a plurality of key ranges, the keyboard 10 is also used as an operator for designating a division position. In the following description, when specifying each key individually, a number is assigned to each key, and keys # 1 to # 88 (the lowest key is the key # 1, and the highest key is the key # 1). Key # 88).

The operation panel 12 is provided with various switches, numerical indicators for displaying various states, lamps, and the like. The operation panel 12 is used for setting a tone, setting various effects, and adjusting a volume. Operated. The CPU 14 controls the entire electronic musical instrument according to a control program stored in the ROM 16, and controls such as keyboard division and tone range setting according to the present invention are also realized by the processing of the CPU 14.

The ROM 16 stores, in addition to the control program for controlling the CPU 14 described above, waveform data, tone color data, and other various fixed data of musical tones to be generated. The contents stored in the ROM 16 are stored in the CPU 1
4 through the bus 22.

The RAM 18 temporarily stores various data necessary for executing the control program, and secures data areas used as various buffers and flags.
A part of the RAM 18 is configured to hold the stored contents by a built-in battery, so that the stored contents regarding the setting of the tone color and the setting of the division position are held regardless of the ON / OFF of the power switch. ing.

The tone generator 20 generates a digital tone signal in accordance with tone information transmitted from the CPU 14 via the bus 22 and instructing a pitch or volume. D
The / A converter 24 receives a digital signal supplied from the tone generator 20, converts it into an analog signal, and outputs the analog signal.

The amplifier 26 receives the analog tone signal supplied from the D / A converter 24, amplifies the signal at a predetermined amplification rate, and outputs the amplified signal. The speaker 28 receives the analog tone signal supplied from the amplifier 26,
It converts it into sound and emits it. The speaker 28 emits a musical tone corresponding to the depression of a key on the keyboard 10.

Next, the tone generation process in the electronic musical instrument will be described with reference to FIG. This tone generation process is a process that is repeatedly executed until the power switch is turned off after the power switch is turned on. When the tone generation process is started, the CPU 14 firstly starts an entire key range setting process (S105). This whole key range setting process
This is a process for setting one range for the entire key range of the keyboard 10, and more specifically, a process as shown in FIG. By this whole key area setting process, an initial value is set in the tone generation parameter table PT stored in the RAM 18.

As shown in FIG. 4, the tone generation parameter table PT is composed of 88 array elements PT [1] to PT [88] corresponding to keys # 1 to # 88. In PT [m] (m = 1 to 88), a parameter group (here, timbre (To), which is necessary for generating a musical tone having a tone color and a pitch assigned to each key.
ne Code) p1, scale (Note Code) p
2, an octave value (Octave Code) p3) is stored. Each array element PT [m] may further include a parameter group other than those described above (for example, parameters for various effects), but a detailed description thereof is omitted because it is not directly related to the present invention.

When the entire key area setting process is started, the CPU 14
First sets 1 to the loop counter i (S20
5) If i ≦ 88 (S210: YES), the first tone color TC1 is set as the tone color p1 in the array element PT [i] for the array element PT [i] of the tone generation parameter table PT. (S215). The first tone TC1 is
A number representing a specific tone color, which is stored in a storage area secured in the RAM 18 separately from the tone generation parameter table PT. The first tone color TC1 is usually a value selected on the operation panel 12 in a first tone color setting process described later, and the value is stored regardless of whether the power switch is on or off. However, if the stored value becomes an indefinite value due to a battery exhaustion or the like, the preset value stored in the ROM 16 (the number 1 corresponding to the tone color of the piano in this embodiment) is adopted as the first tone color TC1. Is done.

Subsequently, the original scale of the keyboard 10 is set to the scale p2 in the array element PT [i] (S22).
0). The value set to the scale p2 is a value of 0 to 11 corresponding to the scale of “C” to “B”, and [(i + 11−the number of keys in the lowest octave region (3 in the case of this electronic musical instrument)) / 12 Remainder].

Subsequently, the original octave value of the keyboard 10 is set to the octave value p3 in the array element PT [i] (S225). The value set in the octave value p3 is any one of 0 to 8, and a smaller value indicates a lower range, and [(i + 11−the number of keys in the lowest octave range (3 in the case of this electronic musical instrument)) / 12 integer part].

Subsequently, 1 is added to the loop counter i (S230), and the process returns to S210. This allows
The processing of S210 to S230 is repeated while i ≦ 88, and necessary values are set to all of the array elements PT [i] in the tone generation parameter table PT. Then, when i = 88 (S210: NO), this processing is ended. Thus, the process of S105 in FIG. 2 has been completed.

After completing the entire key range setting process in S105, the CPU 14 subsequently stands by until a key press / key release operation is performed on the keyboard 10 (S110: NO), and when the operation on the keyboard 10 is performed (S110: NO). S110: YE
S), if it is a key pressing operation (S115: YES),
A key pressing process is performed (S120). In this key depressing process, a parameter group necessary for generating a musical tone is read from the musical tone generating parameter table PT initialized earlier. That is, the CPU 14 specifies which of the keys # 1 to # 88 is the key number included in the key press information output from the keyboard 10 and the key number n (n = 1 to 88).
Is used as a key to read a parameter group from the array element PT [n] corresponding to the key number n, thereby obtaining a necessary parameter group. Then, by giving the parameter group to the musical tone generating device 20, a musical tone having a desired tone and pitch is generated from the speaker 28.

On the other hand, if the result of the processing in S115 is not a key pressing operation (S115: NO), key release processing is performed (S115).
125). In this key release process, the CPU 14 also uses the key number n included in the key press information output from the keyboard 10.
Is a key # 1 to a key # 88. Thereafter, by giving a parameter group for stopping the musical tone at the pitch corresponding to the specified key #n to the musical tone generating device 20, the sound generation from the speaker 28 for the intended musical tone is stopped.

By the above-described tone generation processing, the key press /
A tone is generated according to the key release operation. Next, the keyboard dividing process in the electronic musical instrument will be described with reference to FIG. This keyboard division processing is started as an interruption processing when a division switch on the operation panel 12 is turned on. By this keyboard dividing process, the keyboard 10 is set with the first and second key ranges in which the timbre and the tone range are set independently of each other.

When the keyboard dividing process is started, the CPU 14
First, a first key range setting process is executed (S305).
This first key range setting process is performed to the left of the division position (keyboard 1
0 key range (low range in the original range)
This is a process of setting a sound range for the key range of FIG.

When the first key range setting process is started, the CPU 1
4 first calculates the key number C1 of the key # C1 located at the center of the first key area (S405). This key number C1 is
According to the division position SP, C1 = [integer part of SP / 2]. The division position SP is usually a value set by a user in a division position setting process described later, and the value is stored regardless of whether the power switch is turned on or off. However, if the stored value becomes an undefined value due to a battery exhaustion or the like, the preset value (37 in the present embodiment) stored in the ROM 16 is adopted as the division position SP.

Subsequently, the CPU 14 obtains the original octave value o1 of the key # C1 (S410). Specifically, this octave value o1 is [(C1 + 11−the number of keys in the lowest octave area (3 in the case of the present electronic musical instrument)) / 12 integer part]. Of course, since the original octave value of the keyboard 10 is invariable, it is not always necessary to perform such an operation each time. For example, p2 as shown in FIG.
The initial value of p3 is stored in the form of a table in the ROM 16, and the original octave value o of the key # C1 is referred to with reference to this table.
1 may be obtained.

Subsequently, the octave shift amount SF1 in the first key range is calculated (S415). The octave shift amount SF1 is SF1 = so1-o1 according to the octave value o1 and the octave value so1 of the reference tone range of the timbre set in the first key range. The octave value so1 of the reference tone range is a value stored in the ROM 16 in association with the tone color. For example, the tone color of the instrument frequently used in the low tone range is a small value (for example, 1 to 3), and the instrument tone frequently used in the middle tone range. Has a medium value (for example, 4 to 5), and the timbre of a musical instrument frequently used in a high tone range has a large value (for example, 6 to 7).

Subsequently, 1 is set to the loop counter i (S420), and if i <SP (S425: YE
S), array element P of tone generation parameter table PT
T [i], the tone p in the array element PT [i]
The first timbre TC1 is set to 1 (S430), and a new octave value no1 is set to the octave value p3 in the array element PT [i] (S435). The new octave value no1 is a value obtained by adding the octave shift amount SF1 to the original octave value of the key #i, specifically, [(i + 11
-Number of keys in the lowest octave range (3 for this electronic musical instrument)
Integer part of / 12] + SF1.

After updating the value in the array element PT [i], 1 is added to the loop counter i (S440),
It returns to the process of S425. Thereby, this S425-
The process of S440 is repeated while i <SP, and the tone color of the array elements PT [1] to PT [SP-1] corresponding to the first key range in the tone generation parameter table PT is the first. The tone color TC1 is changed, and the octave value p3 is changed by an octave shift amount SF1 with respect to the original tone range. When i = SP (S425: N
O), end this processing. Thereby, S3 in FIG.
This means that the process of step 05 has been completed, and as a result, the range and timbre corresponding to the first key range are set.

Subsequently, the CPU 14 executes a second key range setting process (S310). The second key range setting process is a process of setting a range for a key range (hereinafter, referred to as a second key range) to the right of the division position (on the treble side in the original range of the keyboard 10). Yes, the details are as shown in FIG.

When the second key range setting process starts, the CPU 1
4 first calculates the key number C2 of the key # C2 located at the center of the second key area (S505). This key number C2 is
C2 = [integer part of (SP + 88) / 2] according to the division position SP used in the first key range setting process.

Subsequently, the CPU 14 obtains the original octave value o2 of the key # C2 (S510). Specifically, the octave value o2 is [(C2 + 11−the number of keys in the lowest octave range (3 in the case of the present electronic musical instrument)) / 12 integer part]. Subsequently, the octave shift amount SF2 in the second key range is calculated (S515). The octave shift amount SF2 is defined by the octave value o2 and the octave value so2 of the reference range of the timbre set in the second key range.
, SF2 = so2-o2. The octave value so2 of the reference range is also a value stored in the ROM 16 in association with the timbre, like the octave value so1.

Subsequently, the division position SP is stored in the loop counter i.
Is set (S520), and if i ≦ 88 (S52)
5: YES), the second tone color TC2 is set as the tone color p1 in the array element PT [i] for the array element PT [i] of the tone generation parameter table PT (S53).
0). The second tone TC2 is also the first tone TC1 described above.
Similarly to the above, a number representing a specific tone color is stored in a storage area secured in the RAM 18 separately from the tone generation parameter table PT. This second tone TC2 is usually
This is a value selected on the operation panel 12 in a second tone color setting process to be described later, and this value is stored regardless of whether the power switch is turned on or off. However, if the stored value becomes an undefined value due to a battery exhaustion or the like, the ROM 1
The preset value (number 1 corresponding to the tone color of the piano in the present embodiment) stored in 6 is adopted as the second tone color TC2.

Subsequently, a new octave value no2 is set to the octave value p3 in the array element PT [i] (S535). The new octave value no2 is the key #i
And the octave shift amount SF2 added to the original octave value, specifically, [(i + 11-the number of keys in the lowest octave area (3 in the case of this electronic musical instrument)) / 12 integer part]
+ SF2.

After updating the value in the array element PT [i], 1 is added to the loop counter i (S540).
It returns to the process of S525. Thereby, this S525-
The process of S540 is repeated while i ≦ 88, and the tone color of the array elements PT [SP] to PT [88] corresponding to the second key range in the tone generation parameter table PT is the second tone color TC2. And the octave value p3 is changed by an octave shift amount SF2 with respect to the original sound range. Then, when i = 88 (S525: N
O), end this processing. Thereby, S3 in FIG.
This means that the processing in step 10 has been completed, and as a result, the range and timbre corresponding to the second key range are set, and the keyboard division processing ends with this.

By the above-described keyboard division processing, the tone generation parameter table PT is rewritten, and the tone range and tone corresponding to the first and second key ranges are set. as a result,
Returning to the repetition part of the tone generation process described above, tones of different timbres are generated from the two key ranges, and the range assigned to the two key ranges is predetermined for each timbre. The range is shifted octaves so that the reference range is substantially at the center of the key range.

Therefore, even if troublesome adjustment is not performed by manual operation, the sound range which is considered to be frequently used in each key range is automatically arranged near the most convenient center. Further, even when the frequently used sound ranges match or overlap with each other in the tone colors set in the two key regions, an optimum sound range can be assigned to each key region. Furthermore, assigning a tone that frequently uses the low range to the key range on the high frequency side, or conversely, assigning a tone that frequently uses the high frequency range to the key range on the low frequency side, does not cause any problem. Can be assigned to key ranges.

To release the division of the keyboard 10 by the above-mentioned keyboard division processing, the division switch on the operation panel 12 is turned off. In this case, the entire key range setting process (see FIG. 3) is executed as an interrupt process, whereby the setting of the two key ranges on the keyboard 10 is released.

Next, the division position setting process will be described with reference to FIG. This division position setting processing is executed as an interruption processing when a division position designation switch on the operation panel 12 is pressed. When the division position setting process is started, the CPU 14 first waits for a key depression operation to be performed on the keyboard 10 (S605). When the key depression operation is performed, the CPU 18 sets the key number n of the key #n to the RAM 18 as the division position SP. (S610). This division position S
P is used in the previously described keyboard division processing and the like.

Then, it is checked whether or not the keyboard is being divided (S615).
(615: NO), this processing is terminated as it is, but if the key is being divided (S615: YES), the above-described keyboard division processing (see FIG. 5) is executed (S620), and then the processing is terminated.

By executing the processing of S620, the key range is reset according to the newly set division position. As a result, when returning to the repetition part in the tone generation processing described above, the tone of the tone color respectively set is generated from the two newly set key ranges, and furthermore, the newly set tone is generated. The tone range assigned to the two key ranges is a tone range that is newly octave-shifted so that a reference tone range predetermined for each tone color is substantially at the center of the tone range.

Next, the first tone color setting process will be described with reference to FIG. This first tone color setting process is a process executed as an interrupt process when the first tone color setting switch on the operation panel 12 is pressed. When the first tone color setting process is started, the CPU 14 waits for a tone color to be designated (S705).
The tone color TC1 is stored in the RAM 18 (S710).

Then, it is checked whether or not the keyboard is being divided (S715).
715: NO), the above-mentioned entire key range setting process (see FIG. 5) is executed (S720), and this process ends. This allows
The timbre is reset in the entire key range of the keyboard 10. on the other hand,
If the division is being performed (S715: YES), the above-described first key range setting process (see FIG. 6) is executed (S725), and this process ends. As a result, the range and timbre corresponding to the first key range are reset.

As a result, when returning to the repetition part of the tone generation process described above, a tone is generated with a new tone over all keys unless the keyboard is being divided. A musical tone is generated in a new timbre and a new timbre for the key range. Next, the second tone color setting process will be described with reference to FIG.
It will be described based on. The second timbre setting process is a process executed as an interrupt process when the second timbre setting switch on the operation panel 12 is pressed.

When the second tone color setting process is started, the CPU 1
4 waits for a tone color to be designated (S805), and when the tone color is designated, the tone color is designated as a second tone color TC2 in the RAM.
18 (S810). Then, it is checked whether or not the keyboard is being divided (S815). If the keyboard is not being divided (S815: NO), this processing is ended as it is. In this case, the tone of the keyboard 10 does not change. On the other hand, if the division is being performed (S815: YES), the second
The key range setting process (see FIG. 7) is executed (S820), and this process ends. As a result, the range and timbre corresponding to the second key range are reset.

As a result, when returning to the repetition part in the tone generation processing described above, the tone does not change unless the keyboard is being divided, but if the keyboard is being divided, the second key range is not changed. A musical tone is generated in a new tone and range. As described above, according to the present electronic musical instrument, by selecting a central range that is frequently used in performance as a reference range, when the keyboard 10 is divided into two ranges, the key range and the range are different. The central range frequently used in the performance can be assigned to each key range without making a troublesome adjustment while taking into account the relationship.

In particular, since the reference range is set for each timbre, the range to be assigned to each key range can be an optimum range corresponding to the timbre. Furthermore, when changing the range to be assigned to each key range, the range is changed in octave units. Therefore, there is no transposition relationship between two or more key ranges. The performance sound does not become uncomfortable even if the performance is performed simultaneously.

In addition, since the sound range is assigned so that the reference sound range is closest to the center position of each key range, the pitch difference of the sound range to be used can be compared with the case where the reference sound range is assigned to the end of each key range. There is a high possibility that you can play without any problem even if the target is large. As described above, the embodiments of the present invention have been described. However, various specific embodiments other than those described above can be considered for the embodiments of the present invention.

For example, in the above-described electronic musical instrument, the reference range is arranged near the center of each key range. However, when the reference range itself is slightly lower, or the lower range than the reference range is almost completely shifted. When it is assumed that the key range is not used, a range may be assigned to each key range such that the reference range is shifted to the left end of each key range.

In the description of the electronic musical instrument, no exceptional cases have been mentioned in order to avoid complicating the description. For example, the octave shift amount SF1, SF1, SF
If the sum of 2 simply results in the lowest range of each key range being lower than the original range, or the highest range of each key range is higher than the original range. , The addition of the octave shift amounts SF1, SF2 may be stopped, or the octave shift amounts SF1, SF2
The addition of F2 may be performed, and the key may not be operated to generate sound only in a range that is excessively low or high.

Regarding the division position of the key range, the electronic musical instrument is divided into a key range lower than the designated key and a key range other than the specified key. If you specify, you are not actually dividing the key range. Therefore, when the first key is designated as the division position, the operation may be regarded as an error or ignored. Alternatively, not only the first key but also a plurality of keys on the lowest note side (for example, a key for one octave) may have an error or ignore the designation of the division position,
A plurality of keys (for example, one octave) may be ensured as the first key range. However, if the specification of the first key on the lowest note side is also permitted as in the above electronic musical instrument, in this case, the entire key range is treated as the second range, and Since only the second tone color TC2 is set in the range, there is no problem at all. It should be noted that such restriction of the dividing position is not limited to the key range on the bass side, and may be performed on the key range on the treble side. For example, for a plurality of keys on the highest note side (for example, one octave key), if the designation of the division position is to be erroneous or ignored, the plurality of keys (for example, one octave) must be in the second key range. Is secured as.

In addition, when an operation for specifying a division position or an operation for specifying a tone is received, if an erroneous operation or the like is performed, a process for notifying that the operation is erroneous is added, or the process is canceled during the operation. Of course, you can.
Further, in the above-described electronic musical instrument, an example in which the electronic musical instrument is divided into two key ranges has been described. For example, in the case of the electronic musical instrument, a first division position SP1 and a second division position SP2 are stored in place of the division position SP, and each key is divided into three key areas divided by those division positions. The array element PT [i] of the musical tone generation parameter table PT may be rewritten for each area.

Further, in the electronic musical instrument, the tone generation parameter table PT is used, and the array elements PT
The description has been made as if the timbre p1, the scale p2, and the octave value p3 are stored as they are as the parameter group stored in [i]. However, this is a measure taken for the sake of convenience so that the description is not unnecessarily complicated. The parameter group actually stored in the tone generation parameter table PT may be stored as numerical data or the like that is convenient for performing internal processing. Specifically, this parameter group does not have to be clearly divided as the above three types of data. For example, instead of the musical scale p2 and the octave value p3, a frequency value may be stored. Other numerical data of four or more may be used as long as the data can be converted into data equivalent in processing.

In addition, in the above-described electronic musical instrument, the parameter group corresponding to each key is individually stored using the tone generation parameter table PT, and is simply read out when the tone is generated. C with high processing capacity
In the case of a PU, the tone color or the tone range set in the key range may be determined each time a key is pressed, and a parameter group corresponding to the tone may be generated each time. Since only the memory need be stored, the storage capacity required for the performance can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of an electronic musical instrument.

FIG. 2 is a flowchart of a musical sound generation process.

FIG. 3 is a flowchart of an entire key range setting process.

FIG. 4 is a structural diagram of a tone generation parameter table.

FIG. 5 is a flowchart of a keyboard dividing process.

FIG. 6 is a flowchart of a first key range setting process.

FIG. 7 is a flowchart of a second key range setting process.

FIG. 8 is a flowchart of a division position setting process.

FIG. 9 is a flowchart of a first tone color setting process.

FIG. 10 is a flowchart of a second tone color setting process.

[Explanation of symbols]

10 keyboard, 12 operation panel, 14 C
PU, 16 ... ROM, 18 ... RAM, 20 ...
-Tone generator, 22 ... bus, 24 ... D / A converter, 26 ... amplifier, 28 ... speaker.

Claims (4)

[Claims] An electronic musical instrument provided with a keyboard dividing means capable of dividing a keyboard into a plurality of key ranges, wherein each of the key ranges includes a sound within a predetermined reference range. An electronic musical instrument characterized by comprising a range setting means for assigning a range. 2. A timbre setting means capable of setting a timbre for each key range divided by the keyboard dividing means, wherein the timbre setting means converts a sound in the reference range defined for each timbre into each key. The electronic musical instrument according to claim 1, wherein a sound range is assigned to each of the key ranges so as to be included in the range. 3. The key range setting means assigns, to each key range, a key range which is shifted by an octave unit from a key range allocated to each key range before division. The electronic musical instrument according to claim 1 or 2. 4. The range setting means sets the reference range to the center position of each key range within a range shifted in octave units from the range assigned before division to each key range. 4. The electronic musical instrument according to claim 3, wherein a sound range is assigned to each of the key ranges so as to make them closest.