JP3356326B2 - Electronic musical instrument - Google Patents

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 in which the degree of reverb is controlled in accordance with an operation state.

[0002]

2. Description of the Related Art Generally, an electronic musical instrument can add various effects to a musical tone generated by the musical instrument. One such effect is the reverb effect.

In a conventional electronic musical instrument, in order to apply reverb to a musical tone, a player operates a predetermined switch provided on an operation panel to shift the electronic musical instrument to a reverb setting mode. For example, it is necessary to set a parameter indicating how much reverb is applied (for example, level and time) using a display and a dial.

On the other hand, many electronic musical instruments in recent years have an automatic accompaniment device. It is also possible to apply reverb to the automatic accompaniment sound generated by such an automatic accompaniment device, and in this case also, it is necessary to set parameters by performing the same operation as described above.

[0005]

In the performance of an electronic musical instrument, automatic accompaniment is stopped.
That is, in a normal performance state in which only a depressed sound is generated, it is preferable that the reverb be applied deeper. However, when automatic accompaniment is being performed,
If the degree of reverb is large, the number of sounds increases, and there is a problem that the outline of the sounds is blurred.

Therefore, when shifting from the normal performance state in which the reverb is deeply applied to the automatic accompaniment state, or when shifting from the automatic accompaniment state to the normal performance state, the reverb parameters must be reset. There is a problem that the operation is troublesome and a quick transition cannot be performed.

[0007] The present invention has been made in view of such circumstances, and, for example, as in the case of transition from a normal performance state to an automatic accompaniment state, or vice versa, optimal reverb is applied according to a change in the state of the electronic musical instrument. It is an object of the present invention to provide an electronic musical instrument capable of realizing the condition.

[0008]

In order to achieve the above object, an electronic musical instrument according to the present invention provides a reverb parameter to a reverb applying means for instructing how much reverb is applied, so that the reverb can be controlled in accordance with the reverb parameter. In an electronic musical instrument that generates a played musical tone, instructing means for instructing a transition to a predetermined operating state, and when instructed by the instructing means, reverb parameters corresponding to the operating state are transmitted to the reverb applying means. Setting means to set,
And characterized in that:

For the same purpose, the instruction means is an automatic accompaniment start switch for starting automatic accompaniment, and the predetermined operation state is an automatic accompaniment state.

For the same purpose, the instructing means is an intro start switch for starting an intro accompaniment, and the predetermined operation state is an automatic accompaniment state. It is performed after the introduction of the intro accompaniment by turning on the switch.

For the same purpose, the instruction means is a synchro start switch for starting an automatic accompaniment in synchronization with a key depression, and the predetermined operation state is an automatic accompaniment state. Is performed by turning on the synchro start switch and pressing the key thereafter.

For the same purpose, the instruction means is an automatic accompaniment stop switch for stopping the automatic accompaniment, and the predetermined operation state is a normal accompaniment state. The operation is performed by turning on a stop switch.

Further, for the same purpose, the instruction means is an ending start switch for stopping the automatic accompaniment, and the predetermined operation state is a normal accompaniment state. The ending accompaniment is completed after the start switch is turned on.

[0014]

According to the present invention, the reverb parameter is automatically changed when the operation state of the electronic musical instrument changes, so that the degree of reverb applied is changed according to the operation state.

More specifically, when shifting to the automatic accompaniment state by turning on the automatic accompaniment start switch, turning on the intro start switch, or pressing the key after turning on the synchro start switch, for example, the degree of reverb is reduced. Reverb parameters are set in advance. Thus, in the automatic accompaniment state, it is possible to perform a musical tone with a clear contour of a sound with little reverb.

Further, turning on an automatic accompaniment stop switch,
Alternatively, when returning from the automatic accompaniment state to the normal performance state by turning on the ending switch, reverb parameters for increasing the degree of reverb applied are set in advance. As a result, it is possible to perform the performance with a preferable musical tone having a large reverb effect in the normal performance state.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the electronic musical instrument of the present invention will be described in detail with reference to the drawings. In the following, a description will be given mainly of a characteristic portion of the present invention, that is, a configuration and an operation related to a change of a reverb parameter.

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of an electronic musical instrument according to the present invention. Central processing unit (hereinafter referred to as “CPU”) 1 which is a main component of the electronic musical instrument
0, ROM 11, RAM 12, keyboard device 13, operation panel 14, tone generator (tone generator) 15, and reverb circuit 16 are interconnected via a system bus 30.

The CPU 10 controls the entire electronic musical instrument according to a control program stored in the ROM 11. For example, the CPU 10 performs various processes such as tone generation / silence processing according to the operation of the keyboard device 13, tone color change, volume change, and rhythm change processing according to the operation of the operation panel 14. The reverb setting process according to the feature of the present invention is also performed by the C
This is performed by the PU 10.

The CPU 10 is connected to the MI via a dedicated line.
The DI interface circuit 20 is connected. MID
The I interface circuit 20 controls the transfer of MIDI data between the electronic musical instrument and an external device. Examples of the external device include other electronic musical instruments for processing MIDI data, a sequencer, and a personal computer.

The CPU 10 has a built-in timer (not shown), and generates an interrupt at a time interval equivalent to one step time during the automatic accompaniment process, for example, at a time interval obtained by dividing a quarter note into 48 equal parts. The number of interrupts by this timer is counted by a counter COUNTREQ, which will be described later, and is used during automatic performance processing.

The ROM 11 stores a control program for operating the above-described CPU 10 and a C program.
Various fixed data used by the PU 10 for various processes are stored. As one of the fixed data, reverb parameters for automatic accompaniment or normal performance directly related to the features of the present invention are stored.

The ROM 11 stores automatic performance data relating to the features of the present invention for each rhythm type. Each automatic performance data is composed of an intro pattern, a basic pattern, an ending pattern, and the like. The intro pattern is data for performing intro accompaniment, the basic pattern is data for realizing a basic pattern of the rhythm, and the ending pattern is data for performing ending accompaniment.

The ROM 11 stores tone color parameters for defining tone colors and pulse code modulated (PCM) waveform data for generating musical tone waveforms. In order to realize a plurality of tone colors, a plurality of types of waveform data are prepared for each tone color.

The contents stored in the ROM 11 are read out by the CPU 10 and the tone generator 15 via the system bus 30 in a time-division manner. That is, the CPU 10 reads out a control program (instruction) from the ROM 11 via the system bus 30, interprets and executes the control program, and reads out predetermined fixed data and uses it for various processes.

Further, the CPU 10 performs predetermined processing on the timbre parameters read from the ROM 11 via the system bus 30 and sends the processed timbre parameters to the tone generation circuit 15, thereby determining the timbre of the tone generated by the electronic musical instrument. Furthermore,
The CPU 10 reads out the automatic accompaniment data from the ROM 11 via the system bus 30, creates a development sound based on the data, and sends the developed sound to the musical sound generation circuit 15 via the system bus 30 to perform the automatic accompaniment.

On the other hand, the tone generator 15 reads out waveform data from the ROM 11 via the system bus 30 and adds an envelope to generate a digital tone signal.

The RAM 12 temporarily stores various data used for executing the control program, and defines areas such as a data buffer, a register, and a flag. The RAM 12 is accessed by the CPU 10 via the system bus 30. This RAM 12
The registers, flags, etc. defined in the above will be described below as needed.

The operation panel 14 is used to instruct various operations of the electronic musical instrument.
An indicator, a dial, and the like (all not shown) are provided.

The various operators include an automatic accompaniment start switch (hereinafter simply referred to as "start switch"), an intro start switch (hereinafter simply referred to as "intro switch"), a synchro start switch (hereinafter referred to as "intro switch") used in this embodiment. , Simply referred to as a “sync switch”), an automatic accompaniment stop switch (hereinafter simply referred to as a “stop switch”), and an ending start switch (hereinafter simply referred to as an “ending switch”),
Other operators are provided.

The start switch starts automatic accompaniment, and when the switch is turned on, the electronic musical instrument enters an automatic accompaniment state. The intro switch starts the accompaniment of the intro pattern. When the switch is turned on, the intro accompaniment is started, and when the intro accompaniment ends, the electronic musical instrument enters an automatic accompaniment state.

The synchro switch starts automatic accompaniment in synchronism with the key depression. When the key is pressed while the switch is turned on, the electronic musical instrument enters an automatic accompaniment state. The stop switch stops the automatic accompaniment, and when the switch is turned on, the electronic musical instrument returns from the automatic accompaniment state to the normal playing state.

The ending switch starts the ending pattern accompaniment. When the switch is turned on, the ending accompaniment is started. When the ending accompaniment ends, the electronic musical instrument returns from the automatic accompaniment state to the normal playing state.

In this embodiment, the start switch, the intro switch, the synchro switch, the stop switch, and the ending switch are provided as independent switches. However, they may be configured as switches having a plurality of functions.

For example, the start switch and the stop switch may be constituted by one switch, and a toggle switch in which the start function or the stop function is inverted each time the switch is pressed may be employed. Further, the intro switch and the ending switch may be formed by one switch, and the toggle switch may be configured such that the intro function or the ending function is inverted each time the switch is pressed. Further, the synchro switch and another switch (for example, a fill-in switch) may be constituted by one switch, and a toggle switch in which a synchro function or another function (for example, a fill-in function) is inverted each time the switch is pressed may be employed.

Other switches provided on the operation panel 14 include a mode switch for shifting an operation mode (for example, a normal performance mode, an automatic accompaniment mode, a parameter setting mode, etc.) of the electronic musical instrument, and a display unit. And a cursor switch for moving the cursor.

The above-mentioned display displays information indicating the current state of the electronic musical instrument and various messages, and is composed of, for example, a character display using an LCD. The numbers, characters, symbols, and the like displayed on the display follow the data sent from the CPU 10. This display is used for inputting various parameters in conjunction with the operation of the cursor switch and the dial.

The dial is used to change a value input to an input field formed on the display. This dial is composed of, for example, a rotary encoder, and outputs data according to rotation.
The data output by the dial increases, for example, by turning right, and decreases by turning left.

Using the operation panel 14 configured as described above, a tone is selected, a volume is set, a rhythm is selected,
Alternatively, a tone color selection parameter, a volume setting parameter, a rhythm selection parameter, a reverb parameter, and the like are input to set the degree of reverb.

For example, when selecting a timbre, the electronic musical instrument is set to a parameter setting mode by operating a mode switch. As a result, a plurality of pairs of a function name and a value input field for this function are displayed on the display, and the cursor is displayed in any of the input fields. Here, the cursor is moved to the input field of the tone selection function using the cursor switch, and a desired value (tone number) is input using the dial. This completes the tone selection. The volume, rhythm, and reverb depth are set by the same operation.

The operation panel 14 is connected to the CPU 10 via a panel scan circuit (not shown). The panel scan circuit scans each of the switches and the dial, generates switch data composed of a bit string indicating ON / OFF of each switch and panel data composed of dial data, and sends the panel data to the CPU 10. This panel data is stored in the RAM 12 under the control of the CPU 10, and is used to determine the presence or absence of a panel event (details will be described later).

The keyboard device 13 has a plurality of keys, and in the normal performance mode, all keys are used for pitch designation. On the other hand, in the automatic accompaniment mode, about two octaves on the low note side (for example, 21 keys C1 to G♯2) are used as a chord detection area for designating a chord. 40 keys) are used as a normal performance range for instructing a pitch.

The keyboard device 13 includes a plurality of keys, a key switch which opens and closes in conjunction with the keys, and a key scan circuit (not shown). The key scan circuit is
Each key is scanned, and key data composed of a bit string indicating ON / OFF of each key is generated and sent to the CPU 10. The key data is stored in the RAM 12 under the control of the CPU 10, and is used to determine the presence or absence of a keyboard event (details will be described later).

The tone generating circuit 15 generates a digital tone signal in accordance with tone data transmitted from the CPU 10 and instructing a pitch or volume. The tone generating circuit 15 has a plurality of oscillators capable of simultaneously generating sounds, and a predetermined oscillator is assigned according to a sound generation instruction and used for sound generation. That is, the oscillator to which the sound is assigned reads the waveform data from the ROM 11 and
A digital tone signal is generated by adding an envelope thereto. The digital tone signal generated by the tone generating circuit 15 is sent to a reverb circuit 16.

The reverb circuit 16 is a circuit for adding reverb (reverberation). The degree of reverberation is controlled by a reverb parameter sent from the CPU 10 via the system bus 30. The reverb parameter is data for specifying a reverb level and time. The reverb circuit 16 adds reverb to the digital tone signal sent from the tone generator 15 in accordance with the reverb parameter sent from the CPU 10 and sends it to the D / A converter 17. In addition, as a method of adding reverb to a digital tone signal, any known technique may be used.

The D / A converter 17 is a well-known D / A converter that converts an input digital signal into an analog signal and outputs the analog signal. The tone signal converted into an analog signal by the D / A converter 17 is sent to an amplifier 18.

The amplifier 18 is a well-known amplifier that amplifies an input analog tone signal at a predetermined amplification rate and outputs the amplified signal. The tone signal amplified by the amplifier 18 is supplied to a speaker 19.

The speaker 19 is a well-known speaker for converting an analog tone signal as an electric signal into an acoustic signal. The loudspeaker 19 emits a tone corresponding to a key press / release of the keyboard device 13 or a tone accompanying an automatic accompaniment.

Next, the operation of the embodiment of the electronic musical instrument according to the present invention in the above configuration will be described in detail with reference to the flowcharts shown in FIGS.

FIG. 2A is a main flowchart showing the operation of the electronic musical instrument, which is started when the power is turned on.

That is, when the power of the electronic musical instrument is turned on,
First, an initial setting process is performed (step S10). The details of this initialization process are shown in the flowchart of FIG.

In the initial setting process, first, a counter and a flag are initialized (step S30). That is, while the counter COUNTREQ is cleared to "0",
RUNFLG, SYNCFLG, INTRFLG and E
Each flag of NDIFLG is cleared to "0". The counter COUNTREQ and each flag are both stored in RAM.
12 are provided.

The counter COUNTREQ counts the number of times an interrupt request has been made since the last processing, and this content is used as the number of step times to be advanced in the automatic accompaniment processing. The flag RUNFLG is a flag indicating that the mode is the automatic accompaniment mode. The flag SYNCFLG is a flag indicating that a sync start is waiting. The flag INTRFLG is a flag indicating that the intro pattern is being played. Flag E
NDIFLG is a flag indicating that the ending pattern is being played.

Next, the loop counter LCNT is set to "0".
Is cleared (step S31). The loop counter LCNT is a counter provided in the RAM 12, and is used to count the number of repetitive processes performed below. The content of the loop counter LCNT simultaneously corresponds to the number of the sounding channel.

Next, the storage area for the automatic accompaniment data is initialized (step S32). Here, the storage areas for the automatic accompaniment data are provided only for the number of sounding channels, and the respective storage areas are a gate time storage area GATE, a keyboard number storage area KYNO, and a sounding part storage area PAR.
T. In this step, the gate time storage area G of the automatic accompaniment data storage area corresponding to the tone generation channel indicated by the contents of the loop counter LCNT
The ATE, the keyboard number storage area KYNO, and the sounding part storage area PART are all cleared to “0”.

Next, the loop counter LCT is incremented (step S33), and as a result, it is checked whether or not the content of the loop counter LCNT is equal to or less than the maximum number of sounds (step S34). Here, the maximum number of sounds means the maximum number of simultaneous sounds in automatic accompaniment, that is, the number of sound channels of the electronic musical instrument.

If it is determined that the content of the loop counter LCNT is less than the maximum number of sounds, step S3
2 and the same processing as described above is repeated. As a result of this repetitive execution, in step S34, the loop counter L
If it is determined that the content of the CNT has reached the maximum number of sounds, the process proceeds to step S35. By the above processing, the storage area of the automatic accompaniment data for all the sounding channels is "0"
This is the default setting.

In step S35, other initial setting processing is performed. For example, processing for setting initial values in various buffers, registers, flags, and the like defined in the RAM 12 other than those described above. Is performed to suppress generation of unnecessary sounds. Thereafter, the process returns from the initialization processing routine and returns to the main routine.

Next, panel processing is performed (step S11). Details of this panel processing are shown in the flowchart of FIG.

In the panel processing, first, the presence or absence of a panel press event is checked (step S40). this is,
This is performed as follows. That is, first, the operation panel 14
The panel control circuit scans the controls and dials, and reads panel data (hereinafter referred to as "new panel data") consisting of switch data indicating ON / OFF of each control and dial data output by the dial. .

Next, the panel data (hereinafter referred to as "old panel data") previously read and stored in the RAM 12 is compared with the new panel data, and a panel event map in which different bits are turned on is created. You. If there is a bit that is on in this panel event map, it is determined that a panel event has occurred, and a bit in the new panel data corresponding to the bit that is on in the panel event map is added. If it is turned on, it is determined that a press event has occurred.

If it is determined in step S40 that there is no panel press event, the process returns from the panel processing routine without performing the following processing. Returning from the panel processing routine returns to the main routine. The same applies to returns performed below.

On the other hand, if it is determined in step S40 that a panel press event has occurred, it is checked whether the panel event is a start switch event (step S41). This is performed by checking whether or not the bit corresponding to the start switch in the panel event map is on.

If it is determined that the event is a start switch event, it is checked whether or not RUNFLG is "1", that is, whether or not the automatic accompaniment mode is set (step S42). If it is determined that RUNFLG is "1", it is determined that the start switch has been pressed in the automatic accompaniment mode, and the process returns from the panel processing routine without performing the following processing. That is, pressing of the start switch in the automatic accompaniment mode is ignored.

On the other hand, at step S42, RUNFLG
Is not "1", it is determined that the start switch has been pressed in the normal performance mode, and a transition process to the automatic accompaniment mode is performed. That is, first, INTRF
LG is cleared to "0" (step S43). Thus, the fact that the intro pattern is not being played is stored. Next, an accompaniment start process is performed (step S4).
4). The details of the accompaniment start processing are shown in the flowchart of FIG.

In the accompaniment start processing, first, reverb parameters for automatic accompaniment are set (step S70).
This is a process of reading out the reverb parameters for automatic accompaniment stored in the ROM 11 in advance and setting them in the reverb circuit 16.

The reverb parameters for the automatic accompaniment and the normal performance may be preset in the RAM 12 by the player using the operation panel 14 or the like, and the reverb parameters set in the RAM 12 may be used. . According to this configuration, it is possible to realize the degree of reverb applied according to the player's preference.

A plurality of reverb parameters for automatic accompaniment and normal performance are stored in the ROM 11, or a plurality of reverb parameters for automatic accompaniment and normal performance are stored in the RAM 12 by the player in advance. May be selected as appropriate according to the tone color, tempo, accompaniment pattern, and the like to be used. According to such a configuration, more precise control of the reverb is possible.

Next, it is checked whether or not INTRFLG is "1", that is, whether or not the intro pattern is being played (step S71). Where INTRFLG
Is not "1", the head address of the basic pattern is set as the pattern read address (step S72). On the other hand, when it is determined that INTRFLG is "1", the head address of the intro pattern is set as the pattern read address (step S73).
In the automatic accompaniment process described later, the automatic accompaniment data (basic pattern or intro pattern) is sequentially read from the pattern read address set as described above, and the basic or intro automatic accompaniment process is performed.

Next, the flag RUNFLG is set to "1" (step S74), and it is stored that the automatic accompaniment mode is set. Next, the step counter STEPC
NT is cleared to "0" (step S75). The step counter STEPCNT is a counter that stores the current step time, and is provided in the RAM 12. By the above processing, the step time is initialized to zero. When the above processing ends, the routine returns from the accompaniment start processing routine, and returns to the main routine via the panel processing routine.

In step S41 of the panel processing routine,
If it is determined that the event is not a start switch event, then it is checked whether or not the event is an intro switch event (step S45). This is performed by checking whether the bit corresponding to the intro switch in the panel event map is on.

If it is determined that the event is an intro switch event, it is checked whether or not RUNFLG is "1", that is, whether or not the automatic accompaniment mode is set (step S46). If it is determined that RUNFLG is "1", it is determined that the intro switch has been pressed in the automatic accompaniment mode, and the process returns from the panel processing routine without performing the following processing. That is, pressing of the intro switch when already in the automatic accompaniment mode is ignored.

On the other hand, at step S46, RUNFLG
Is not "1", it is determined that the intro switch has been pressed in the normal performance mode, and a transition process to the automatic accompaniment mode is performed. That is, first, INTRF
LG is set to "1" (step S47). Thus, the fact that the intro pattern is being played is stored. Next, whether or not SYNCFLG is “1”,
That is, it is checked whether or not the sync start is in standby (step S48). Here, if it is determined that SYNCFLG is "1", the accompaniment start processing is performed in a keyboard processing routine to be described later. At this point, the process returns from the panel processing routine without performing any processing.

On the other hand, if it is determined that SYNCFLG is not "1", accompaniment start processing is performed to start intro accompaniment (step S49). The accompaniment start processing is the same as that already described with reference to FIG. When the accompaniment start processing in step S49 ends, the process returns from the panel processing routine.

If it is determined in step S45 that the event is not an intro switch event, then it is checked whether or not the event is a synchro switch event (step S50). This is performed by checking whether or not the bit corresponding to the sync switch in the panel event map is turned on.

If it is determined that the event is a synchro switch event, it is checked whether or not RUNFLG is "1", that is, whether or not the automatic accompaniment mode is set (step S51). If it is determined that RUNFLG is "1", it is determined that the synchro switch has been pressed in the automatic accompaniment mode, and the process returns from the panel processing routine without performing the following processing. That is, pressing of the synchro switch when already in the automatic accompaniment mode is ignored.

On the other hand, at step S51, RUNFLG
Is not "1", it is determined that the intro switch has been pressed in the normal performance mode, and a transition process to the automatic accompaniment mode is performed. That is, SYNCFLG
Is set to "1" (step S52). As a result, the fact that the synchronization start is being waited is stored.
Thereafter, the process returns from the panel processing routine. In this case, the accompaniment start processing is performed in a keyboard processing routine described later.

If it is determined in step S50 that the event is not a synchro switch event, then it is checked whether or not the event is a stop switch event (step S53). This is performed by checking whether or not the bit corresponding to the stop switch in the panel event map is on.

If it is determined that the event is a stop switch event, it is checked whether or not RUNFLG is "0", that is, whether or not the normal performance mode is set (step S55). If it is determined that RUNFLG is "0", it is determined that the stop switch has been pressed in the normal performance mode, and the process returns from the panel processing routine without performing the following processing. That is, pressing of the stop switch in the normal performance mode is ignored.

On the other hand, at step S54, RUNFLG
Is not " 0 ", it is determined that the intro switch has been pressed in the automatic accompaniment mode, and a transition process to the normal performance mode is performed. That is, an accompaniment stop process is performed (step S55). Details of the accompaniment stop processing are shown in the flowchart of FIG.

In the accompaniment stop processing, first, a flag clear processing is performed (step S80). That is, RUNFL
G, SYNCFLG, INTRFLG and ENDIFL
Each flag of G is set to “0”. As a result, the flags defining the operation in the automatic accompaniment mode are all cleared to zero, and the mode shifts to the normal performance mode.

Next, reverb parameters for normal performance are set (step S81). This is the RO
This is a process of reading the reverb parameters for normal performance stored in M11 and setting them in the reverb circuit 16. Thereafter, the process returns from the accompaniment stop processing routine, returns to the panel processing routine, further returns the panel processing routine, and returns to the main routine.

In this case, as described in the processing in step S70 of the accompaniment start processing routine, the reverb parameters may be set using the operation panel 14, or a plurality of reverb parameters may be set. It may be configured so that it is prepared and used by selecting it according to the tone color, tempo, accompaniment pattern and the like.

In step S53 of the panel processing routine,
If it is determined that the event is not the event of the stop switch, then it is checked whether or not the event is the event of the ending switch (step S56). This is performed by checking whether or not the bit corresponding to the ending switch in the panel event map is on.

Here, if it is determined that the event is an ending switch event, it is checked whether or not RUNFLG is "0", that is, whether or not the normal performance mode is set (step S57). Here, RUNFLG is "0"
, It is determined that the ending switch has been pressed in the normal performance mode, and the process returns from the panel processing routine without performing the following processing. That is, pressing of the ending switch in the normal performance mode is ignored.

On the other hand, at step S56, RUNFLG
Is not "0", it is determined that the ending switch has been pressed in the automatic accompaniment mode, and an ending start process is performed (step S58). Details of the ending start processing routine are shown in the flowchart of FIG.

In the ending start process, first, a flag setting process is performed (step S90). That is, it is stored that the flag ENDIFLG is set to “1” and the ending pattern is being played, and the flag INTRFLG is set.
It is stored that LG is cleared to "0" and no intro pattern is being played.

Next, the head address of the ending pattern is used as the pattern read address (step S9).
1). Thereby, in the automatic accompaniment processing described later, the automatic accompaniment data (ending pattern) is sequentially read from the pattern read address set as described above, and the ending automatic accompaniment processing is performed.

Next, the step counter STEPCNT
Is cleared to "0" (step S92). As a result, the step time is initialized to zero. When the above processing is completed, the control returns from the ending start processing routine to the panel processing routine, returns to the panel processing routine, and returns to the main routine.

In step S56 of the panel processing routine,
If it is determined that the event is not an ending switch event, another switch process is performed (step S5).
9). In this process, for example, a mode change process associated with the operation of the mode switch, a setting process of various parameters associated with the operation of the dial (for example, various parameters such as tone color, volume, and rhythm selection) are performed. Thereafter, the process returns from the panel processing routine and returns to the main routine.

Next, in the main routine, keyboard processing is performed (step S12). This keyboard process is a process of sounding / muting when a key is depressed / released from the keyboard device 13, and its details are shown in the flowchart of FIG.

In the keyboard processing, first, the presence or absence of a keyboard event is checked (step S100). This is performed as follows. That is, the key switch is scanned by the key scan circuit of the keyboard device 13, and key data indicating a pressed state of each key (a bit string corresponding to each key, which is referred to as "new key data") is read.

Next, the key data previously read and stored in the RAM 12 (hereinafter referred to as "old key data") is compared with the new key data, and a key event map in which different bits are turned on is created. You. If there is an ON bit in this key event map, it is determined that a keyboard event has occurred.

If it is determined in step S100 that there is no keyboard event, the process returns from the keyboard processing routine without performing any processing.

On the other hand, if it is determined in step S100 that a keyboard event has occurred, then it is checked whether or not the keyboard event is a key event in the chord detection area (step S101). That is, the keyboard device 13
It is checked whether or not the event is a key having a key number equal to or smaller than the predetermined key number.

Here, if it is determined that the event is not a key event in the chord detection area, it is recognized that the event is a key event in the normal performance area, and the flow branches to step S102 to perform sound generation processing or mute processing. That is, when there is a key event in the normal performance area, the tone generation process or the silence process is performed regardless of whether the electronic musical instrument is in the normal performance mode or the automatic accompaniment mode.

In step S102, it is checked whether the keyboard event is a key press event. This is performed by checking whether the bit in the new key data corresponding to the bit turned on in the key event map is “1”.

Here, when it is determined that the event is a key pressing event, a sound generation process is performed for the key having the event (step S103). In this process, a tone is assigned to a predetermined tone generation channel, and tone data including a key number of a key having the key press event, touch data indicating a key press intensity (speed), and data indicating a tone color is generated. This is processing to be sent to the circuit 15. As a result, a digital tone signal based on the tone data is generated in the tone generating channel assigned by the tone generating circuit 15, and the digital tone signal is sequentially sent to the D / A converter 17, the amplifier 18, and the speaker 19 to generate a tone. .

On the other hand, if it is determined in step S102 that the event is not a key-depression event, it is recognized that the event is a key-release event, and mute processing is performed on the key having the key-release event (step S104). That is, the sound channel assigned to the key having the key release event is searched, and the release envelope data is sent to mute the sound.

If it is determined in step S101 that the event is a key event in the code detection area, then it is checked whether the flag SYNCFLG is "1", that is, whether the synchro switch is pressed. (Step S105).

Here, when it is determined that the flag SYNCFLG is "1", the flag SYNCFLG is cleared to "0" (step S106), and then, an accompaniment start process is performed (step S107). This accompaniment start process is the same as that already described with reference to FIG. Thereafter, the flow branches to step S108.

By this processing, a synchro start function is realized in which the automatic accompaniment is started at the first keyboard event in the chord detection area after the synchro switch is turned on.

In step S105, the flag SYNC is set.
When it is determined that the FLG is not “1”, that is, the sync start is not in standby, or when the accompaniment start process of the sync start is completed, it is then determined whether or not the flag RUNFLG is “1”, that is, the electronic musical instrument is automatically activated. It is checked whether or not it is in the accompaniment mode (step S108).

Here, when it is determined that the flag RUNFLG is not "1", that is, that the normal performance mode is set,
The flow branches to step S102 in order to perform the sound generation processing or the mute processing. That is, when there is a key event in the chord detection area, the tone generation processing or the mute processing is performed only when the electronic musical instrument is in the normal performance mode. Step S1
The processing after 02 is as described above.

On the other hand, in step S108, the flag R
When UNFLG is “1”, that is, when it is determined that the electronic musical instrument is in the automatic accompaniment mode, a chord detection process is performed (step S109). The chords detected here are expanded into chords to generate automatic accompaniment data,
When used in an automatic accompaniment processing routine to be described later, an accompaniment sound is generated with a predetermined chord sound. However, since this chord development is not directly related to the present invention, a description thereof will be omitted. It is assumed that has already been generated. When this code detection process ends,
The process returns from the keyboard processing routine and returns to the main routine.

Next, in the main routine, an automatic accompaniment process is performed (step S13). In this automatic accompaniment process, when the electronic musical instrument is in the automatic accompaniment mode and the sounding or silencing timing has come, the ROM 11
This is a process for generating a development sound in accordance with the automatic accompaniment data (pattern data) read out from the device, and performing sound generation or mute.
This sounding or silencing process itself is the same as the sounding or silencing process accompanying the key press or key release of the keyboard device 13.

Next, other processing is performed (step S14). This “other processing” is, for example, MIDI
Data transmission / reception processing and the like are included. Then step S1
1 and the same process is repeated thereafter. Step S above
When an event based on a panel operation or a keyboard operation or an automatic accompaniment event occurs in the process of repeatedly executing steps S11 to S14, various functions as an electronic musical instrument are exhibited by performing processing corresponding to the event.

In parallel with the processing of the main routine described above, the interruption processing by the timer is performed. Details of the interrupt processing by the timer are shown in the flowchart of FIG.

The number of step times to be advanced during the automatic accompaniment process is counted by the interruption by the timer. That is, in this interrupt processing routine, the counter CUN
A process of incrementing TREQ is performed (step S20), and thereafter, the process returns from the interrupt processing routine.

Next, the details of the automatic accompaniment process performed in step S13 of the main routine will be described with reference to the flowcharts shown in FIGS.

In the automatic accompaniment process, first, the counter CUN
The content of TREQ is set in the counter AUTOCNT, and the content of the counter COUNTREQ is cleared to "0" (step S120). AUTOCNT is R
This is a counter provided in the AM 12. As a result, the number of step times to be advanced in the current automatic accompaniment process is set in the counter AUTOCNT.

Next, it is checked whether or not the content of the counter AUTOCNT is "0", that is, whether or not there is a step time number to be advanced (step S12).
1). Here, if it is determined that the content of AUTOCNT is “0”, it is recognized that there is no step time number to be advanced, and the process returns from the automatic accompaniment processing routine.

On the other hand, when it is determined that the content of AUTOCNT is not "0", that is, that there is a step time number to be advanced, a gate-off process is performed (step S122). This gate-off process is a process of stopping the sounding of the sounding channel whose gate time becomes zero at the step time. The details of the gate time process are shown in the flowchart of FIG.

In the gate-off process, first, the loop counter LCNT is cleared to "0" (step S13).
0). This loop counter LCNT is the same as that used in the initialization processing routine.

Next, it is checked whether or not the content of the gate time storage area GATE in the automatic accompaniment data storage area corresponding to the content of LCNT is "0" (step S1).
31). If it is determined that the value is "0", the flow branches to step S135, and the loop counter LCT is incremented. Next, it is checked whether or not the content of the loop counter LCNT is equal to or less than the maximum number of sounds (step S34). The meaning of the maximum number of pronunciations is as described above.

If it is determined that the content of the loop counter LCNT is less than the maximum number of sounds, step S1
Returning to 31, the same processing as described above is repeated. If it is determined in step S131 that the contents of the gate time storage area GATE are not “0” in the course of this repetitive execution, the gate time storage area GATE is determined.
Is decremented (step S132). Then, as a result of this decrement, the gate time storage area G
It is checked whether or not the content of the ATE has become "0" (step S133). If it is not "0", the process branches to step S135 and the same processing as described above is repeated.

On the other hand, when it is determined in step S133 that the content of the gate time storage area GATE is "0", the keyboard number storage area in the automatic accompaniment data storage area corresponding to the content of the loop counter LCNT is determined. KYN
The musical tones of the sounding channels being sounded based on O and the sounding part storage area PART are muted (step S).
134). Next, the process proceeds to step S135, and the same processing as described above is performed.

In the course of such repetitive execution, step S
If it is determined in 136 that the contents of the loop counter LCNT have reached the maximum number of sounds, the routine returns from the gate-off processing routine and returns to the automatic accompaniment processing routine. By the above gate-off process, the gate times of all sounding channels that are sounding are decremented, and sounding by sounding channels whose gate times have become “0” is stopped.

In the automatic accompaniment processing routine, it is checked whether or not the content of the step counter STEPCNT matches the step time included in the next automatic accompaniment data (step S123). That is, one piece of automatic accompaniment data (intro pattern, basic pattern or ending pattern) is read from the pattern read address held at that time, and the step time included in the data and the step counter STEPCNT are read.
Are compared.

If it is determined in step S123 that they do not match, the counter is updated (step S123).
125). That is, the contents of the step counter STEPCNT are incremented and the counter AUTOC is incremented.
The contents of NT are decremented. Then, step S
Returning to 121, the same processing is repeated again.

On the other hand, if it is determined in step S123 that they match, accompaniment data processing is performed (step S124). This accompaniment data process is a process of generating a sound based on automatic accompaniment data having the same step times. For details on this accompaniment data processing routine, see
This is shown in the flowchart of FIG.

In the accompaniment data processing, first, it is checked whether or not the status included in the automatic accompaniment data whose step times match indicates "end mark" (step S140). Here, the “end mark” is special data indicating the end of the automatic accompaniment data.

When it is determined in step S140 that the ENDIFLG is the end mark, it is checked whether ENDIFLG is "1", that is, whether the ending pattern is being automatically accompanied (step S14).
1). When it is determined that ENDIFLG is "1", an accompaniment stop process is performed (step S14).
2). This accompaniment stop processing is the same as that already described with reference to FIG. Thereafter, the routine returns from the accompaniment data processing routine and returns to the automatic performance processing routine.

According to the above processing, when the ending switch is designated, the rhythm automatic accompaniment ends at the same time as the end of the ending pattern automatic accompaniment.

On the other hand, in step S141,
If it is determined that FLG is not "1", the head address of the basic pattern is set as the pattern read address (step S143), and then the step counter ST
EPCNT is cleared to "0" (step S14)
4). By this processing, when an end mark appears in a normal automatic accompaniment other than the automatic accompaniment of the ending pattern, the automatic accompaniment of the basic pattern is repeatedly performed.

If it is determined in step S140 that the status included in the automatic accompaniment data whose step times match is not an "end mark", then it is checked whether the status is "key-on" (step S1).
45). Here, “key-on” is data for instructing sound generation.

If it is determined in this step S145 that the key is "on," a gate time setting process is performed (step S146). This gate time setting process is a process for setting the length of sound generation based on the automatic performance data. Details of the gate time setting process are shown in the flowchart of FIG.

In the gate time setting process, first, the loop counter LCNT is cleared to "0" (step S).
150). This loop counter LCNT is the same as that used in the initialization processing routine.

Next, it is checked whether or not the content of the gate time storage area GATE in the automatic accompaniment data storage area corresponding to the content of LCNT is "0" (step S1).
31). When it is determined that the value is not “0”, the loop counter LCT is incremented (step S).
152) Then, returning to step S151, the same processing is performed. The above process is a process of searching for a sound channel whose gate time is "0", in other words, an unused sound channel.

In the course of the repetitive execution, step S1
In 51, when an automatic accompaniment data storage area in which the content of the gate time storage area GATE is "0", that is, an unused sounding channel is searched, a parameter for sounding is set in the storage area (step S15).
3).

That is, the gate time in the automatic accompaniment data read out earlier is set in the gate time storage area GATE of the automatic accompaniment data storage area indicated by the contents of LCNT, and similarly, the key number in the automatic accompaniment data is LCNT. It is set in the keyboard number storage area KYNO of the automatic accompaniment data storage area indicated by the content, and similarly, the part information in the automatic accompaniment data is set in the sounding part storage area PART of the automatic accompaniment data storage area indicated by the content of LCNT. . After the above processing, the routine returns from the gate time processing routine and returns to the accompaniment data processing routine.

In the accompaniment data processing routine, sound generation processing is then performed (step S147). That is, in the gate time setting process, the sound is generated using the sound channel corresponding to the storage area of the automatic accompaniment data in which the gate time, the keyboard number, and the part information are set. Thereafter, the flow branches to step S149.

In step S145, the status included in the automatic accompaniment data whose step times match is "key".
If it is determined that it is not " on " , other processing is performed (step S148). This other process is, for example, a tone color changing process when the status included in the automatic accompaniment data is “tone color changing”.

Next, the address of the next automatic accompaniment data is used as the pattern read address (step S149).
That is, when executing the automatic accompaniment processing routine next time,
The address of the automatic accompaniment data read in step S123 is stored. After the above processing, the process returns from the accompaniment data processing routine and returns to the automatic accompaniment processing routine.

In the automatic accompaniment processing routine, step S1
Branching to 23, the same processing as described above is performed. By repeating steps S123 and S124, the sound generation processing of all the automatic accompaniment data having the same step time,
A silencing process or the like is performed.

As described above, according to the present embodiment,
When the operating state of the electronic musical instrument shifts from the normal performance mode to the automatic accompaniment mode by turning on a start switch, an intro switch, or a synchro switch, for example, reverb parameters for reducing the degree of reverberation are set in advance. In the automatic accompaniment mode, it is possible to perform automatic accompaniment with a musical tone having a clear contour of a sound with little reverb.

Conversely, when the operating state of the electronic musical instrument shifts from the automatic accompaniment mode to the normal performance mode by turning on a stop switch or an ending switch, for example,
For example, since reverb parameters for increasing the amount of reverb are set in advance, in the normal performance mode, automatic accompaniment can be performed with a preferable tone having a large amount of reverb.

In the above embodiment, the reverb parameter suitable for each mode is set when moving between the normal performance mode and the automatic accompaniment mode. Occasionally, it may be configured to set an arbitrary reverb parameter.
For example, when the mode is shifted from the parameter setting mode to the normal performance mode or the automatic accompaniment mode, or when another mode is changed, a reverb parameter suitable for the mode can be set.

[0139] Not only when the mode is changed, but also when the state of the electronic musical instrument changes, for example, when the timbre is changed by the timbre selection operation, when the rhythm pattern is changed by the rhythm selection operation, and when the volume is changed by the volume operation. When it is performed, the reverb parameter suitable for the state can be set.

[0140]

As described above in detail, according to the present invention, an optimum reverb is provided in accordance with a change in the state of an electronic musical instrument, for example, in a transition from a normal performance state to an automatic accompaniment state, or vice versa. An electronic musical instrument capable of realizing the degree of stiffness can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an embodiment of an electronic musical instrument to which an automatic accompaniment device of the present invention is applied.

FIG. 2 is a flowchart (main routine and interrupt processing routine) illustrating the operation of the embodiment of the present invention.

FIG. 3 is a flowchart (initial setting process routine) showing an operation of the embodiment of the present invention.

FIG. 4 is a flowchart (panel processing routine) showing the operation of the embodiment of the present invention.

FIG. 5 is a flowchart (accompaniment start processing routine) showing the operation of the embodiment of the present invention.

FIG. 6 is a flowchart (accompaniment stop processing routine) illustrating the operation of the embodiment of the present invention.

FIG. 7 is a flowchart (ending start processing routine) showing an operation of the embodiment of the present invention.

FIG. 8 is a flowchart (keyboard processing routine) illustrating the operation of the embodiment of the present invention.

FIG. 9 is a flowchart (automatic accompaniment processing routine) showing the operation of the embodiment of the present invention.

FIG. 10 is a flowchart (gate-off processing routine) showing an operation of the embodiment of the present invention.

FIG. 11 is a flowchart (accompaniment data processing routine) showing the operation of the embodiment of the present invention.

FIG. 12 is a flowchart (gate time setting processing routine) illustrating an operation of the example of the present invention.

[Explanation of symbols]

 Reference Signs List 10 CPU 11 ROM 12 RAM 13 Keyboard device 14 Operation panel 15 Musical sound generator 16 Reverb circuit 17 D / A converter 18 Amplifier 19 Speaker 20 MIDI interface circuit 30 System bus

Continuation of the front page (56) References JP-A-2-66596 (JP, A) JP-A-2-199500 (JP, A) JP-A-4-13192 (JP, A) JP-A-4-53296 (JP) , U) Japanese Utility Model 5-60100 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10H 1/00-7/12

Claims (5)

(57) [Claims] 1. A reverb parameter, which indicates a degree of reverb, is given to a reverb applying means,
In an electronic musical instrument that generates a reverbated musical tone in accordance with the reverb parameter, a normal performance state in which only a depressed sound is generated and an automatic accompaniment are performed.
Instruction means for instructing the transition to the accompanying performance state; and setting means for, when instructed by the instruction means, setting a reverb parameter corresponding to the performance state after the transition in the reverb providing means. An electronic musical instrument, comprising: 2. The instructing means is an intro start switch for starting an intro accompaniment, and the transition to the performance state with the automatic accompaniment is performed after the intro accompaniment is completed by turning on the intro start switch. The electronic musical instrument according to claim 1, wherein: 3. A synchronizing start switch for starting automatic accompaniment in synchronization with key depression,
2. The electronic musical instrument according to claim 1, wherein the transition to the performance state accompanied by the automatic accompaniment is performed by turning on the synchro start switch and pressing a key thereafter. Wherein said indicating means is an automatic accompaniment stop switch for instructing the transition from the performance state accompanied by automatic accompaniment to the normal play mode, the transition to the normal performance state,
2. The electronic musical instrument according to claim 1, wherein the operation is performed by turning on the automatic accompaniment stop switch. 5. The ending start switch for switching from a performance state with automatic accompaniment to the normal performance state, wherein the transition to the normal performance state is terminated by turning on the ending start switch. 2. The method according to claim 1, wherein the step is performed later.
An electronic musical instrument according to claim 1.