JP2003345356A - Electronic musical instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent music from being played with extreme sound volume balance for fear lest it is erroneously recognized that a device has trouble, whichever position a dual/split balance setting fader is set in at the time of power on. <P>SOLUTION: Sound volume balance different from that set by a setting position of a dual/split balance setting fader 5-5 which is read at the time of power on is set, and setting of sound volume balance by the fader 5-5 is validated only when an event occurs on the fader 5-5. A preliminarily stored default value or an intermediate value between a value set by the setting position of the fader at the time of power on and the default value can be taken as sound volume balance set at the time of power on. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an electronic musical instrument,
In particular, the present invention relates to an electronic musical instrument in which the setting position of the split volume balance setting means when the power is turned on is not reflected in the volume balance, so that there is no fear of accidentally playing the volume balance.

[0002]

2. Description of the Related Art Some electronic musical instruments such as electronic pianos can be played in a split mode in which different tone colors are assigned to the upper and lower keys of a keyboard and are pronounced.

In this type of conventional electronic musical instrument, a split button, a tone button, a dual /
Operators such as faders for split balance setting and a display such as an LCD screen are provided, and the split button and tone buttons can be used to select the split mode and tones in the split mode. The split balance setting fader can be used to change the volume balance of the upper and lower keyboard tones in split mode.By pressing a specific key on the keyboard at the same time as pressing the split button, You can change the division point.

[0004]

In the electronic musical instrument of this type, the set position of the operator is read when the power is turned on,
By the setting according to the reading result,
If the operator is not operated thereafter, the setting state in which the setting position of the operator at power-on is reflected as it is is continued. Regarding the dual / split balance setting fader, the setting position is read when the power is turned on, and the volume balance is set according to the setting position.

Therefore, for example, at a store,
If the fader is set to an extreme value and left unattended while performing a demo such as automatic performance or semi-automatic performance, and the power is turned off, the volume will remain at that extreme setting the next time the power is turned on. There was a risk that the performance was performed in a balanced manner and that there was a problem with the device.

According to the present invention, no matter what position the fader is set when the power is turned on, the performance is prevented from being performed with an extreme volume balance, and there is a possibility that the device may be erroneously recognized as defective. It is intended to provide a non-electronic musical instrument.

[0007]

In order to solve the above-mentioned problems, the present invention sets a volume balance different from the setting by the setting position of the split volume balance setting means read when the power is turned on, and the split volume balance setting is performed. The first feature is that the control means for enabling the setting of the volume balance by the split volume balance setting means is provided only when an event occurs on the means.

A second feature of the present invention is that the volume balance different from the setting by the setting position of the split volume balance setting means is the volume balance stored as a default value in advance.

Further, according to the present invention, the volume balance different from the setting by the setting position of the split volume balance setting unit is determined by the default value stored in advance and the setting position of the split volume balance setting unit read when the power is turned on. The third characteristic is that it is calculated.

Further, the present invention is provided with display means, and the display means displays a state in which a volume balance different from the setting by the setting position of the split volume balance setting means read at power-on is set. There is a fourth characteristic.

Further, the fifth feature is that, on condition that the automatic performance or the semi-automatic performance is set, a volume balance different from that set by the setting position of the split volume balance setting means read when the power is turned on is set. is there.

According to the first and second characteristics, the setting position of the split volume balance setting means when the power is turned on is not reflected in the volume balance, and there is no risk of accidentally playing the volume balance.

According to the third feature, the previous volume balance can be reflected to some extent, and the operator does not feel strange when the power is turned on immediately after the power is turned off.

According to the fourth feature, it is possible to easily understand that the setting position of the split volume balance setting means is invalid.

Further, according to the fifth feature, it is possible to prevent the performance from being performed with an extreme volume balance, especially when performing a demonstration by an automatic performance or a semi-automatic performance, and it is erroneously recognized that the device has a defect. There is no fear of

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing the configuration of an electronic piano to which the present invention is applied. In the figure, the CPU 1 controls the entire electronic musical instrument according to a control program stored in the ROM 3. CPU1
In addition to the timer interrupt circuit, is equipped with a serial port for connection with the MIDI interface circuit 2. MID
The I interface circuit 2 is a signal transmission / reception circuit that exchanges MIDI messages with external MIDI devices.

The ROM 3 stores a control program, various parameters for setting a performance state such as tone color parameters and effect parameters. The tone color parameters include tone waveform address information and envelope control information stored in the waveform memory. The RAM 4 is used as a work area for the CPU 1. The RAM 4 may be backed up by a battery, for example.

The operation panel 5 displays operators for setting various states during performance, states during performance and during setting,
For example, it has a display consisting of an LCD screen. Details of the operation panel 5 will be described later.
The operation panel interface (I / F) 6 generates switch event information indicating ON / OFF of a switch of an operator of the operation panel 5. The switch event information is stored in the RAM 4 in association with each operator.

The keyboard 7 has a plurality of keys (keys), and has, for example, two sensors for detecting key event information indicating each key-on / key-off and touch information indicating key pressing strength, that is, velocity. ing. The keyboard interface (I / F) 8 generates key event information and touch information based on the state of the sensor, and these pieces of information are stored in the RAM 4 in association with the key number.

The pedal 9 including the damper pedal and the soft pedal and the pedal interface 10 generate pedal event information indicating ON / OFF of the pedal operation, and this pedal event information is also stored in the RAM 4.

The musical tone generating circuit 11 is a circuit for generating a desired musical tone signal by a waveform reading method. For example, a digital control oscillator (DCO), a digital control filter (DCF), a digital control amplifier (DCA) and an effector. , And waveform data are sequentially read from the waveform memory in which digital tone waveform sample values are stored at address intervals proportional to the pitch to be sounded, and interpolation calculation is performed to generate tone waveform signals. Further, it has an envelope generating circuit and multiplies the musical tone waveform generating signal by the envelope signal generated based on the set envelope parameter to give an envelope and outputs a musical tone signal. The tone generation circuit 11
Although it has a plurality of, for example, 32 tone generation channels,
Actually, a plurality of tone signals can be simultaneously and independently generated by time-division multiplexing operation of one tone generation circuit.

The D / A converter 12 converts a digital musical tone signal into an analog signal, and the speaker 14 produces a sound by the musical tone signal amplified by the amplifier 13.
The bus 15 connects each circuit in the electronic musical instrument.

FIG. 2 is a front view showing the appearance of the operation panel 5 shown in FIG. 1. The operation panel 5 has a split button 5-1, a plurality of tone color buttons 5-2, a menu button 5-3, and a value button. 5-4, dual / split balance setting fader 5-5, touch button 5-
6, operation buttons such as a transpose button 5-7, and a display 5-8 including an LCD screen, for example.

Split button 5-1 and tone button 5-
2 can be used to select the split mode and tones in that mode, and the dual / split balance setting fader 5-5 can be used to balance the volume of the tones of the upper and lower keys in split mode. It is possible to change the split point at the same time as pressing the split button 5-1 and pressing a specific key of the keyboard at the same time as in the prior art.

The present invention differs from the prior art in that a volume balance different from the setting depending on the setting position of the dual / split balance setting fader 5-5 read when the power is turned on is set, and an event is displayed on the fader 5-5. Only when it occurs, the volume balance setting by the fader 5-5 is validated.

Here, as the volume balance different from the setting depending on the setting position of the fader 5-5, for example, the volume balance previously stored in the ROM 3 or the RAM 4 as the default value can be used.

FIG. 3 is a main flow chart showing the processing of the electronic piano according to one embodiment of the present invention, and this processing is executed by the CPU 1 based on each operation. First, if the power is turned on, the CPU 1
The RAM 4, the LSI constituting the tone generation circuit 11, etc. are initialized.

In this initialization, the setting positions of various operators on the operation panel 5 are read when the power is turned on. Dual / split balance setting fader read here 5-5
The setting position of is invalid, and the setting positions of the other operators are valid, and the setting according to the read result is performed.

Instead of the fader 5-5 setting position ignored here, for example, a default value stored in advance in the ROM 3 or the RAM 4, for example, a tone volume of the upper key range "50", a tone color of the lower key range. The volume "50" is read out, and the volume balance is set accordingly. At this time, the LCD indicates that the setting position of fader 5-5 is invalid.
The current state of the device can be easily grasped by displaying with a display or an LED provided near the fader.

In the panel event detection / setting process of step S2, the operation of various operators of the operation panel 5 is detected,
The electronic musical instrument is set in a state according to the detection. Settings for the key split mode and various settings for the split mode are also performed here.

Therefore, if the dual / split balance setting fader 5-5 is operated, step S2
The event is detected by the panel event detection / setting process of 1., and the volume balance set to the default value in the initialization is changed to the volume balance according to the setting position of the dual / split balance setting fader 5-5.

In the keyboard event detection process of step S3, the key code of the key operated on the keyboard 7 and the velocity information corresponding to the touch strength are detected. In step S4, the panel event detection / setting process (S
2) and the tone generation processing is performed based on the result of the keyboard event detection processing (S3).

In the other processing of step S5, an automatic performance processing and a MIDI processing when the automatic performance of a music piece selected from the built-in, for example, 88 music pieces are set are performed. In addition, a semi-automatic performance process in which the accompaniment is an automatic performance and the melody is played by pressing the keyboard with one finger is also performed in steps S3 and S5.

Although the embodiments of the present invention have been described above, the present invention can be variously modified. For example, in the above-described embodiment, the volume balance set when the power is turned on is the default value that is stored in advance. However, this is extremely different from the setting by the fader setting position when the power is turned on. Anything can be used as long as it can prevent performance by setting, for example, it can be set to an intermediate value calculated from the setting by the fader setting position when the power is turned on and the default value. The volume balance of the previous time can be reflected to some extent, and the operator is not given a strange feeling when the power is turned on immediately after the power is turned off.

There is a possibility that a performance is performed with an extreme volume balance and the apparatus is erroneously recognized as having a problem, especially when a demonstration by an automatic performance or a semi-automatic performance is performed. It is also possible to store the volume balance dedicated to the performance in advance, invalidate the fader setting position at power-on only in the case of automatic performance or semi-automatic performance, and use the volume balance stored in advance.

The present invention can be applied not only to the electronic piano but also to various electronic musical instruments capable of playing in the split mode.

[0037]

As is apparent from the above description, according to the present invention, it is possible to prevent the performance from being performed with an extreme volume balance, regardless of the position of the fader when the power is turned on. There is no risk of erroneous recognition that a device is defective.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an electronic piano to which the present invention has been applied.

FIG. 2 is a front view showing the outer appearance of the operation panel in FIG.

FIG. 3 is a main flowchart showing a process of the electronic piano according to the embodiment of the present invention.

[Explanation of symbols]

1 ... CPU, 2 ... MIDI interface, 3 ... R
OM, 4 ... RAM, 5 ... Operation panel, 5-1 ... Split button, 5-2 ... Tone button, 5-3 ... Menu button, 5-4 ... Value button , 5-5 ... Dual / split balance setting fader, 5-6 ... Touch button, 5-7 ... Transpose button, 5-6.
..Display, 6 ... Operation panel interface, 7 ...
..Keyboard, 8 ... Keyboard interface, 9 ... Pedal, 10
... Pedal interface, 11 ... Music tone generation circuit, 12
... D / A, 13 ... Amplifier, 14 ... Speaker, 15 ...
bus

Claims (5)

[Claims] 1. An electronic musical instrument capable of playing in a split mode, wherein a volume balance different from that set by the setting position of the split volume balance setting means read when the power is turned on is set, and an event is performed on the split volume balance setting means. The electronic musical instrument is provided with a control means for enabling the setting of the volume balance by the split volume balance setting means only when the occurrence of the noise occurs. 2. The electronic musical instrument according to claim 1, wherein the volume balance different from the setting depending on the setting position of the split volume balance setting means is a volume balance stored in advance as a default value. 3. The volume balance different from the setting depending on the setting position of the split volume balance setting unit is calculated by the default value stored in advance and the setting position of the split volume balance setting unit read when the power is turned on. The electronic musical instrument according to claim 1, wherein 4. A display means is provided, and the display means displays a state in which a volume balance different from that set by the setting position of the split volume balance setting means read at power-on is set. Items 1 to 3
The electronic musical instrument according to any one of 1. 5. A volume balance different from that set by the setting position of the split volume balance setting means read when the power is turned on is set on condition that the automatic performance or the semi-automatic performance is set. The electronic musical instrument according to any one of 1 to 4.