JPH0274997A - Electronic musical instrument - Google Patents

Abstract

PURPOSE:To easily change a musical tone parameter without providing a special switch by utilizing plural musical performance use keys provided on an electronic musical instrument. CONSTITUTION:The title musical instrument is provided with a means 1 for calculating a relative position of other depression key against a specific key which is depressed as a key for changing a musical tone parameter, in a musical tone parameter change mode, and a means 2 for changing the musical tone parameter corresponding to the specific key, based on a result of its calculation. That is, by utilizing plural musical performance use keys provided on an electronic musical instrument body, the musical tone parameter can be changed and set. In such a way, said musical instrument can be constituted at a low cost, and also, since the switches, etc., can be decreased, the operability can be improved. Also, the musical tone parameter can be changed and set by only depressing the specific key and other keys based on this specific key, therefore, the operability is satisfactory. Moreover, when the parameter change quantity is allocated variously in advance to each key, not only a fine adjustment but also a rough adjustment can be executed by a single operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to an electronic musical instrument having a plurality of keys for performance, such as an electronic musical instrument having a keyboard. The present invention relates to an electronic musical instrument that makes it possible to set/change desired musical tone parameters.

(b) Prior art Prior art for this type of electronic musical instrument includes, for example,
There is one shown in No. 137296.

This electronic musical instrument is provided with a plurality of switches for adjusting the amount of tuning, which is one of the tone parameters, so that the amount of tuning can be adjusted by using these switches. That is, in order to change the tuning amount, two switches, an increase switch and a decrease switch, are provided, and the tuning amount is changed by operating the increase switch and the decrease switch.

In addition, a separate switch is provided to specify whether to change the tuning amount finely (for example, by 0.1 cents) or coarsely (for example, by 10 cents) for each operation of these switches. ,1
The amount of tuning that can be changed was changed by operating the increase switch or decrease switch.

(C) Problems to be Solved by the Invention However, in such electronic musical instruments, it is necessary to provide a dedicated operator such as a switch for inputting the amount of change in musical tone parameters (or the value of musical tone parameters). For this reason, there was a problem that the area of the operation panel became large and the cost also increased. In addition, when changing the amount of tuning, in order to be able to make fine and coarse adjustments with a small number of switches, the amount of tuning change per switch for each switch is selected from among multiple types, as in the prior art described above. However, with this type of configuration, the operations tend to be complicated. Furthermore, in wind-type electronic musical instruments that resemble wind instruments in appearance, the area for installing switches is much narrower than in keyboard-type electronic musical instruments, so it is difficult to provide switches such as those described above. Moreover, even if it could be provided, there would be problems in that the placement position would be restricted and the operability would be extremely poor.

An object of the present invention is to make it possible to change musical tone parameters by using a plurality of performance keys of an electronic musical instrument, thereby making it possible to change musical tone parameters without providing a special switch. The object of the present invention is to provide an electronic musical instrument that is easy to change.

(Means for Solving Problem d1) The present invention provides an electronic musical instrument that is equipped with a plurality of keys for performance and is equipped with a control means for changing musical tone parameters corresponding to each key, which changes musical tone parameters in a musical tone parameter changing mode. means for calculating the relative position of other pressed keys with respect to a specific key pressed as a key to be pressed, and means for changing musical tone parameters corresponding to the specific key based on the calculation result. Features.

(e) Function The function of the electronic musical instrument of the present invention will be explained with reference to FIG.

First, the mode of the electronic musical instrument is set to tone parameter change mode. This mode is set using a switch (not shown) or the like. When the musical tone parameter change mode is set, first the key (hereinafter referred to as a specific key) Kl for which musical tone parameters are to be changed is pressed. Although FIG. 1 shows an electronic musical instrument equipped with a keyboard KB, other electronic musical instruments, such as a wind-playing type electronic musical instrument, may be used. When the specific key Kl is pressed and then 2 is pressed on another key, the relative position calculation means 1 calculates the relative position of 1 on the specific key and 2 on the other key.

When the relative position of 2 to the other key is determined, the musical tone parameter changing means 2 sets the change amount of the musical tone parameter based on the relative position. The musical tone parameter changing means 2 determines the amount of change in the musical tone parameter of key 1 according to the relative position of key 2 with respect to key 1, and the setting of the change amount is as follows. This is done by using a table or by calculating a function that takes the above relative position as an argument.

Due to the above-described operation, the musical tone parameters for any key can be easily changed by using the key itself for generating the musical tone.

(f) Embodiment FIGS. 2 to 13 are diagrams showing an electronic musical instrument equipped with a keyboard, which is an embodiment of the present invention. Note that this embodiment shows an example in which the present invention is applied to the case of setting musical tone parameters regarding the amount of tuning for each key.

■Explanation of drawings Figure 2 is a block diagram of the entire electronic musical instrument. Figures 3 (A) and (B) are diagrams showing the main operating procedures and changes in operating status. Figures 4 and 5 are diagrams of the main memory. The configuration diagram, FIG. 6 is a diagram for explaining when setting the cent shift change amount, FIGS. 7 to 12 are flowcharts showing the operation of the CPU, and FIGS. 13 (A) and (B) are for other implementations. Figures for explaining examples are shown, respectively.

(2) Description of Block Diagram The electronic musical instrument of the embodiment has a configuration similar to a known system as disclosed in Japanese Patent Application Laid-open No. 137296/1983. That is, as shown in FIG. 2, the electronic musical instrument of this embodiment includes a keyboard 3, an operation panel 4, a tone generator 5, a sound system 6, a program ROM 7,
Data ROM8, data & working RAM9, CPU
10 are connected by a bus 11, and a writable external memory unit 12 can be further connected via the bus 11. The operation panel 4 is provided with an EDS switch and an EDC switch as switches for setting modes for setting musical tone parameters. E
The DS switch is a switch for setting a tuning amount change mode (hereinafter referred to as EDIT mode), which is an example of a musical tone parameter. Also, the EDC switch changes from (a) EDIT mode to normal mode (hereinafter NORMA).
It has two functions: return to (referred to as L mode) and (b) enter EDIT mode for the previous specific key from NORMAL mode. Here, the specific key is a key that is pressed by the operator in the "EDIT" mode as a key for changing the tuning amount.The operation panel 4 also includes a display used for EDIT and a A group of operation switches for generating musical tone control data and the like are arranged.

Keyboard 3 consists of a keyboard consisting of 61 keys, CP
Ul0 detects the operation status of each key on the keyboard 3, each switch on the operation panel 4, the operation status of the operator, etc., and outputs various information to the tone generator 5 for controlling the formation 2 generation of musical tone signals. The tone generator 5 generates a musical tone signal based on this information, and outputs it as sound in the sound system 6.

The program ROM 7 stores the operating procedure of the CPU I O, and the data ROM 8 stores musical tone control parameters such as equal temperament frequency information data and timbre parameters, which will be described later. Further, the RAM 9 has various registers such as an area for storing frequency information data for determining the musical tone frequency of each key currently set for each key, and a key buffer. The writable external memory unit 12 can receive and pass musical tone control data and the like to and from the RAM 9 via a MIDI terminal, and is composed of, for example, a floppy disk and its drive.

(2) Main operations and display state transitions in EDIT mode When an operator wishes to perform tuning (hereinafter referred to as micro-tuning) for the following keys, the operator operates the EDS switch in the NORMAL mode. That is, the system is in the NORMAL mode (step 5p1) in a normal state (for example, after power-on), but when it is in this NORMAL mode, E
When the DS switch is operated, the process shifts to the EDIT mode and waits for a specific key to be microtuned to be pressed in step SP3. When in NORMAL mode with this procedure, the display will change to ((B) in Figure 3).
The display state is as shown in (1), and when the EDS switch is operated, the display state changes to the display state shown in (2) of FIG. 3(B). In step SP3, a key to be microtuned, that is, a specific key is pressed, and when the specific key is pressed by the operator, the process moves to step SP4.

Here, two things are displayed: the key name (pitch base) of the specific key and the cent shift. The display example shown in (3) of FIG. 3(B) shows that the key name of the specific key is F3 and the cent shift is O. Note that cent deviation is the frequency deviation (pitch deviation) between the musical tone frequency currently set for a specific key and the musical tone frequency according to the equal temperament scale of that specific key.
The amount is expressed in cents, and this cent deviation indicates the tuning amount of a specific key.

When a specific key is designated and its key name and cent shift are displayed, the CPU 10 waits for another key to be pressed (SF3). here,
The significance of other keys lies in their position relative to the particular key. Pressing this other key determines the relative position of the other key with respect to the particular key, and that relative position determines the amount of tuning change expressed in cents. Therefore, the other keys are keys for setting the amount of tuning change.

In SF3, the updated cent shift for the specific key is displayed. The cent deviation is updated by adding or subtracting the tuning change amount (expressed in cents) set by pressing another key to the current tuning amount.

For example, the display state of (4) in FIG. 3(B) is
This shows that the tuning amount has been changed to the 3 cents + side (increase side) from the state (3) in B).

In the EDIT mode, micro-tuning can be performed on any key by simply using the keys of the keyboard 3 through the above operations. In addition, in this embodiment, the amount of tuning change corresponding to the relative position of other keys with respect to a specific key, that is, the amount of cent deviation change, is stored in advance in the data ROM 8 as a table. ■Main memory configuration FIG. 4(A) shows the register configuration in RAMQ. KEYBUF stores a key code representing a key in which an on event or an off event occurs. An event (EVF, NT) means that there has been a change in state when scanning a key or switch, and this KEYBUF stores the key code of a newly pressed key or a released key. .

MTEDS is a flag indicating that it is time to start the EDIT mode. This flag is set when the EDS switch is operated.

MTEDM is a flag indicating EDIT mode. When this flag is "1 percent (state)," the mode is EDIT, and when this flag is "0" (recent state), it is the NORMAL mode.

The MTKCD stores the key code of a specific key to be microtuned.

POINT constitutes a pointer pointing to a table containing cent shift change amounts according to the relative positions of other keys with respect to a specific key.

In addition to the above-mentioned registers, there are a plurality of registers such as a musical tone control register for generating musical tone control data, but these registers will not be explained here.

FIG. 4(B) shows the data storage area of the RAM 9. Area MA stores frequency information data for all keys (61 keys). This frequency information data is actually a digital value (F
number). Area MB stores cent shift information for all keys. This cent shift information is the above-mentioned key tuning amount. Area MA
, MB is information that is currently actually set. For example, when microtuning is not performed at all in the EDIT mode, the information stored in the area MA
The frequency information data stored in area MB becomes equal tempered frequency information data, and the cent deviation information stored in area MB is all zero. Every time microtuning is performed in the EDIT mode, the stored data in areas MA and MB is changed.

FIG. 5(A) shows data stored in the data ROM 8. Area MC stores equal temperament frequency information data for all keys. This frequency information data is used as an initial value when the power is turned on, and is preset in area MA of the RAM. Area MD constitutes a cent shift change information table. This table shows how many cents to shift when another key is pressed after a specific key to be microtuned, depending on the relative position of the specific key and other keys (how many keys apart). The cent shift change information is stored. In this case, since the pattern of the relative positional relationship between the specific key and other keys differs depending on the pitch name of the specific key, the table that stores the above cent shift change information is provided on each pitch name side of C-B. ing. One of these tables is shown in FIG. 5(B).

FIG. 6 shows - As an example, when the specific keys to be microtuned are 04 and C10, other keys -
It shows the amount of change in cent deviation due to pressing. For example, when the specific key for microtuning is 04, if you press the D4 key, which is the white key to the right of the C4 key, once, the current shift of the specific key C4 will be +1 cent. . Also, if you press - the E4 key, which is the white key to the right, the value will shift by +2 cents. When C"4 is set as a specific key, if you press the D key on the right side of the white key -, the shift will be +1 cent, and if you press the D"44 key on the right side, the shift will be +2 cents. As shown in FIG. 5(A),
This kind of cent shift change amount is the key C in one octave.
- Each note name of B is memorized in blocks, and the specific key is C.
If so, the C block table is referenced, and if the specific key is CI+, the C" block is referenced.

Note that since the key arrangement pattern is the same for each octave, each table is commonly used regardless of which octave range the specific key is in.

For example, both when the specific key is 02 and when it is C4, the referenced cent shift change information table is the C block.

In the data ROM 8, a frequency change coefficient table is further allocated to the area ME. This table is used when the cent shift change amount is set for a specific key.
A coefficient (frequency change coefficient) for changing the frequency information data of the specific key based on the cent shift change amount is stored. As will be described later, when this coefficient is read out, the frequency information data stored in area MA of the RAM 9 is multiplied by the coefficient to be updated as new frequency information data. FIG. 5(C) shows the contents of the frequency change coefficient table ME.

In this embodiment, the cent shift change amount for a specific key with respect to a - press of another key is 1.2, 4, 1 for + or -.
The value is determined to be one of 0.50.

(2) Operation of the Embodiment Next, the operation of the embodiment will be explained with reference to the flowcharts shown in FIG. 7 and subsequent figures.

When the power is turned on, the main routine shown in FIG. 7 is executed.

5PIO is an initial step. Here, R.A.
Various registers and work areas in MQ, area MA,
MB etc. are cleared, and equal temperament frequency information data stored in area MC of data ROM 8 is preset for area MA. Next 5 PII, 5
At P12, key scanning on the keyboard 3 and scanning of all switches on the operation panel 4 are performed.

In this key scanning, a key-on or key-off event is detected in 5P13, and when the event is detected, the 9th
Proceed to the operation shown in Figure or Figure 10.

Also, when any switch is turned on on the operation panel 4, the on event is detected in 5P15, and 5P16
It is determined whether the switch turned on is an EDS switch or an EDC switch. If so, the process advances to 5P17 and moves to the operations shown in FIG. 8(A) and FIG. 8(B).

FIGS. 8(A) and 8(B) respectively show the operation of the EDS switch and the EDC switch at the time of an on event.

At the time of EDS switch on event, first 5P20
Then, KEY OFF (data) is sent to all sound generation channels of the tone generator 5. The tone generator 5 generates K for all of these sound generation channels.
When receiving EY OFF, the output of musical tone signals of all channels is stopped.

Next, ite flag MTEDS and MTEDM on 5P21
are set respectively, and the display shown in (2) of FIG. 3(B) is made at 5P22, indicating that the EDIT mode has been entered and that the EDIT mode is starting.

On the other hand, when an on event of the EDC switch is detected, first in 5P30, similar to 5P20 above, KEY OFF is sent to all sound generation channels, and then in 5P3
1, the state of the flag MTEDM is determined. If this flag is set, the current mode is the EDIT mode, and the process advances to 5P32. MTE in 5P32
Both the DM and MTEDS flags are reset, and the process returns to the NoRMAL mode display state of (1) in FIG. 3(B).

On the other hand, if the flag MTEDM is in the reset state at SP31, the current state is considered to be the NORMAL mode, and steps 5P34 and subsequent steps are executed. For 5P34 and below, set the mode to EDIT mode and change the display state as shown in Figure 3 (
Perform the operation to display (3) in B). As mentioned in the section ①, when the EDC switch is turned on during the NORMAL mode, the EDIT mode for the specific key set in the previous EDIT mode is directly entered. Therefore, in 5P34, first set the flag MTEDM indicating that it is the EDIT mode, and in the next 5P35, cent shift information corresponding to the MTKCD key code (key code of a specific key) that has already been input in the previous EDIT mode. is read from area MB of RAM9, 5P36
Then, the display shown in (3) in FIG. 3(B) is performed. SP like this
If the EDC switch is turned on in the NORMAL mode by the operations in 34 to 5P36, the specific key set in the previous EDIT mode will be set as the specific key this time as well, and the microtuning operation for that specific key can be started immediately. can.

FIG. 9 shows the operation when any key is turned on.

First, the key code of the key that caused the ON EVENT is set in KEYBUF (SP40). Next M
5P the status of the two flags TEDS and MTEDM
Judgment is based on 41.42. When MTEDM is reset, it is assumed to be in NORMAL mode and 5P4
Perform steps 3 and below. That is, first, an assigned channel is determined from among the tone generator 50 sound generation channels. Next, frequency information data corresponding to the key code in KEYBUF is read from area MA of RAM 9, and sent to tone generator 5 along with the channel number indicating the assigned channel determined in 5P43 and the frequency information data and the KON signal (KEY ON signal)
Send out. As described above, upon receiving this information, the tone generator 5 starts generating a musical tone signal of a tone pitch frequency corresponding to the frequency information data in the sound generation channel designated by the assigned channel number. This musical tone signal is acoustically output through the sound system 6.

In NORMAL mode, each time a new key-on is detected, steps 5P43 and 5P44 are executed to output the musical tone corresponding to the newly pressed key. be done.

When both the MTEDM and MTEDS flags are on, it indicates that a key was pressed for the first time after the EDS switch was turned on, so in this case, the key that was turned on (pressed) can be identified. The action set as a key is performed. That is, when a key-on event is detected when both of the above flags are on, the flag MTEDS is first reset in advance in 5P45, and then the key code in KEYBUF, that is, ON
Copy the key code that caused the EVENT to the MTKCD for entering the key code of a specific key. This completes the specific key settings. And KEY in 5P47
The cent shift information corresponding to the BUF key code is stored in RAM.
The data is read from area MB No. 9, and the display shown in (3) in FIG. 3(B) is performed. If the key name (pitch) of the specific key is F3 and the cent shift information read in 5P47 is O, the display example shown in (3) of FIG. 3(B) is obtained. Next, in order to produce the sound of that specific key, 5P49 reads frequency information data corresponding to the key code in KEYBUF from area MA of RAM9, and sends this frequency information data to tone generator 5 using the channel number (2ch
) and the KON signal. Note that although the channel number to be transmitted here is 2Ch, in this embodiment this is only because 2ch is the assigned channel for producing the sound of a specific key, and is not limited to 2ch.

When another key is turned on after a specific key is turned on in the ED IT mode, the flag MTEDS is reset (reset at SF45).

), SF3 when the next key-on event is detected
Proceed as 1 → 5P42 → 5P50.

In the above 5P50, the subroutine MTDE shown in FIG.
FI is executed, and in the next step 5P51, the routine MTDEF2 shown in FIG. 12 is executed.

In MTDEFI, KUYBUF key code and MTK
The cent shift change amount (microtuning adjustment amount) of the specific key is determined based on the difference from the CD key code, that is, the relative position of other keys with respect to the specific key. Also, M
In TDEF2, frequency information data and cent shift information corresponding to the key code in MTKCD, that is, corresponding to a specific key, are changed and rewritten in accordance with the cent shift change amount determined by the above MTDEFI. In this way, R
After rewriting area MA and area MB of AM9,
The display contents are updated in SF32. In other words, Fig. 3 (B
) The display contents of the cent shift are updated so that the display state changes from (3) to (4).

After the above processing is completed, the process moves on to sound generation processing. First, 5P5
3, the equal temperament information frequency data corresponding to the key code in the MTKCD, that is, corresponding to a specific key, is converted to data R.
It is read from the area MC in the OMB and sent to the tone generator 5 along with the channel number (indicating lch) and the KON signal. Also, in 5P54, MTK
Area MA of RAM9 corresponding to the key code in the CD
Read out the frequency information data and enter the channel number (
2ch is shown) and is sent to the tone generator 5 together with the KON signal. Through this process, the sound system simultaneously generates musical tones based on the equal temperament of a specific key and microtuned musical tones of the specific key. The operator can aurally know the degree of microtuning by listening to these two sounds simultaneously.

Next, detailed operations of the above-mentioned MTDEFI and MTDEF2 will be explained with reference to FIG. 11 and FIG. 12.

In MTDEFI, first in 5P60, based on the key code in MTKCD, that is, based on a specific key, change the cent shift in data ROMa arranged in blocks for each note name of 12 note names (CN3). Select the table with the corresponding note name from the information table, and set the selected table to POINT. In Figure 5(B), P
An example is shown in which the table C11 is set in OINT. Note that the actual information set in POINT at this time is the table address where the key relative position of the corresponding table is zero (the cent shift change amount is zero).

After setting POINT, in SF31, the relative position of other pressed keys with respect to the specific key is determined by determining the difference X between the key codes in KEYBUF and MTKCD. It is determined in what range this key code difference X lies in 5P62 and 5P63. If the difference X is smaller than -8, the cent shift change amount is set to r-50 cents, which is the maximum value on the negative side, in 5P66. Further, if X is 8 or more, the set deviation change amount is set to "+50 cents", which is the maximum value on the positive side, in 5P65. 5 when X is in the range -7 to 7
At P64, address A is obtained by adding X to the address indicated by POINT. This address A represents the key relative position in FIG. 5(B), and the table contents corresponding to the value of A represent the cent shift change amount. Therefore, for example,
At this time, the address A becomes rPOINT+3J, and the cent shift change amount at that time becomes +2 cents (see FIG. 5(B)). In this way, the cent shift change amount is R
It can be obtained from the cent shift change information table MD in OM5.

Once the cent shift change amount is determined by MTDEFI, a frequency change coefficient is determined by MTDEF2 based on the information, and the contents of areas MA and MB of RAM 9 are updated.

In MTDEF2, in 5P80, refer to the frequency change coefficient table ME shown in FIG.
A frequency change coefficient corresponding to the cent shift change amount found in step 1 is found. Then, in the next 5P81, area M of RAM9
A new value is calculated by multiplying the frequency information data for the specific key stored in A by the frequency change coefficient obtained in 5P80, and the frequency information data for the specific key is rewritten with this new data. In addition, in the 5P82, the MTDEF
Add the cent shift change amount determined by l, and rewrite the added new value.

Area MA in RAMQ is created by the above operations.

MB data is updated.

The substantial microtuning process ends by ending the operations of MTDEFI and MTDEF2. Then, update the display state in 5P52 of FIG. 9, and
53. One micro-tuning operation is completed by performing sound generation processing in 3P54. When returning from EDIT mode to NORMAL mode, turn on the EDC switch. Then, from SF31 to 5P32 in Fig. 8(B)
FIG. 10 shows the key-off processing operation, in which both the MTEDM and MTDES flags are reset to return to NORMAL mode. When a key-off event is detected, first KEYOFF EVENT (7) puts the key code of the cause key into KEYBUF. Next, MT
Determine the state of EDM. Reset state, i.e. NO
SP when in RMAL mode? In step 2, it is determined whether the key code of KEYBUF is in the channel currently being sounded. If the channel is currently sounding, it is necessary to stop the sound of that channel, so 5P7
At step 3, a KEY OFF signal is sent to the 8 corresponding sound generation channels of the tone generator 5, and the process returns.

On the other hand, when the MTEDM is in the cent state, that is, in the EDIT mode at SP71, it is determined whether there are any other keys that are still pressed. If there is no key pressed yet, proceed to 5P75 and tone generator 5
KEY for 2 channels of lch and 2ch
Sends an OFF signal. If there are other keys being pressed, simply return. According to such control,
In EDIT mode, when the last key is turned off, the sound of lch and 2ch assigned to EDIT mode will be forcibly stopped, and as long as a specific key is turned on, even if the other 1-ch is turned off, The musical tones transmitted in 5P53 and 5P54 continue to be produced.

Through the above operations, you can perform micro-tuning on any key by using the keys on the keyboard, and you can also set the amount of tuning change, that is, the amount of cent shift change, relative to the other keys relative to the specific key you are trying to tune. Since it is determined based on the position, it becomes possible to set the cent shift change amount intuitively. For example, as in this embodiment, if keys far away from a specific key position where microtuning is performed have a large center shift change amount, intuitive operation becomes possible. Furthermore, as in this embodiment, if you press a key far away from a specific key, the amount of change in cent deviation will be very large; on the other hand, if you press a key very close to a specific key, the amount of change in cent deviation will be about 1 cent or 2 cents. Since this is extremely small, both fine and coarse adjustments can be easily made during microtuning.

■Other Embodiments FIGS. 13(A) and 13(B) show other embodiments of the present invention.

In the above example, cent shift changes of +1 cent, +2 cents, ... +50 cents are assigned to the keys on the right side of a specific key, and 11 cents, -50 cents are assigned to the keys on the left side. 2 cents...-50 cents cent shift change amount is assigned, but the same +1 cent is assigned to all keys to the right of a specific key,
It is also possible to assign the same penny to all keys to the left of a particular key. Of course, in this case, +1 cent may be +2 cents, and -1 cent may be ~2 cents. FIG. 13(A) shows an embodiment having such a configuration. To do this,
At 5P50 in Figure 9, it is determined whether the pressed key is on the right side or the left side of a specific key, and if it is on the right side, the cent shift change amount is set to +1 cent, and if it is on the left side, the cent shift change amount is set to +1 cent. Set the change amount to 11 cents. In this case, the center shift change information table for the area MD in the data ROMg is not necessary. Note that pressing the key once will set a cent shift change amount of +1 cent or 11 cents, but if you press the key once, you can set a cent shift change amount of +2 cents.
To set it to cents, just press any key to the right of the specific key twice. Therefore, this embodiment has the advantage that the operation is extremely simple because it is only necessary to press any key on the right side of the specific key or any key on the left side the number of times corresponding to the amount of cent shift change.

In yet another embodiment shown in FIG. 13(B), the position of a specific key undergoing microtuning is displayed by an LED placed close to each key. In the above embodiment, specific keys are displayed on the display, but if the specific keys are displayed using LEDs placed close to each key as in this embodiment, it is possible to This has the advantage of further improving operability since specific keys can be identified.

In the above embodiment, an area MB for storing cent deviation information for all keys is provided in RAMQ, but this cent deviation information is stored in area MA and area MC in ROM8.
If you have the information, it can be calculated by calculation, so
It is also possible to omit the area MB by having CP [J handle the processing. Furthermore, when microtuning is performed for a specific key, the octave keys of the specific key can also be automatically tuned by the same amount.

Furthermore, in the above embodiment, the tuning amount for each key was shown as the musical tone parameter to be changed.
Furthermore, other parameters such as envelope parameters, effect parameters, timbre parameters, etc. can also be changed by the present invention. For example, if the attack rate level, which is one of the envelope parameters, can be changed in the EDIT mode, the amount of change in the attack rate level can be set depending on the relative position of another pressed key with respect to a specific key. Similarly, the amount of change in the level of the decay rate level, which is one of the envelope parameters, can be set depending on the relative position of other pressed keys with respect to a specific key. In this case, the various parameters described above are assigned to each key, one by one, and when changing a parameter, specify the type of parameter by pressing the key to which the parameter you want to change is assigned as a specific key. The amount of change in the parameter can also be set by the relative position of another pressed key with respect to a specific key.Furthermore, in the above embodiment, the amount of change of the parameter can be set depending on the relative position of another pressed key with respect to the specific key. However, the value of the parameter itself may be directly set based on the relative position.

(g1 Effect of the invention According to this invention, there is no need to provide a special switch for setting musical tone parameters. In other words, musical tone parameters can be changed/set by using the plurality of performance keys of the electronic musical instrument body. This has the advantage of being able to be configured at low cost and improving operability by reducing the number of switches.Furthermore, in order to change/set musical tone parameters, it is necessary to use a specific key and this specific key as a standard. All you have to do is press the other key you have set.This makes it extremely easy to operate, and since there are generally a large number of keys, you can assign various parameter changes to each key. Both fine and coarse adjustments can be made using the .

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of this invention. FIG. 2 is an overall block diagram of a keyboard electronic musical instrument according to an embodiment of the present invention. Figures 3 (A) and (B) show the main operating procedures and display status transitions of the electronic musical instrument, and Figures 4 (A) and (B)
) shows the RAM register arrangement diagram and the main data storage area, respectively. FIGS. 5A to 5C show configuration diagrams of the data ROM. FIG. 6 is a diagram for explaining the setting of the cent shift change amount. 7 to 12 are flowcharts showing the operation of the electronic musical instrument. Moreover, FIGS. 13(A) and 13(B) are diagrams showing other embodiments of the present invention, respectively. 1-relative position calculation means, 2-musical tone parameter changing means, 3-keyboard, 4-operation panel, 5-tone generator, 6-sound system, 7-program ROM. 8-Data ROM. 9-Data & Working RAM. 1o-cpu.

Claims (1)

[Claims] (1) In an electronic musical instrument equipped with a plurality of performance keys and a control means for changing musical tone parameters corresponding to each key, when in the musical tone parameter changing mode, a specific key pressed as the key to change the musical tone parameters. An electronic musical instrument comprising: means for calculating the relative position of another pressed key; and means for changing musical tone parameters corresponding to the specific key based on the result of the calculation.