JPS62166394A - Electronic musical apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electronic musical instrument that electronically synthesizes musical tones, in which preset timbre information is selected to control the timbre of musical tones.

[Prior Art] In conventional electronic musical instruments, when the tone selection setting switch is changed, the tone is immediately changed regardless of whether musical tones are being generated or not, and in some cases the tone is changed while the tone is being generated due to the circumstances of the sound source. If a key is pressed, the sound is stopped and a new tone is played starting from the note corresponding to the next key pressed.

[Problems with the prior art] A musical score as shown in FIG. 1 is played with tone A (for example, a trumpet sound) up to the Nth measure, and with tone B (for example, a trumpet sound) from the N+1th measure onwards.
When performing with a piano tone), the tone setting operation must be performed immediately before the start of the N+1st measure. However, since both hands are used to operate the w1 board during a performance, it is often difficult to set the tone at that time.

[Object of the Invention] Therefore, it is an object of the present invention to provide an electronic musical instrument that allows tone settings to be easily made during performance.

[Summary of the Invention] To achieve this object, the present invention provides that when the tone selection setting is changed, (1) at least one key is pressed (on) or (2) the hold pedal is pressed. If the key is on (on), the tone is not changed immediately, but when (1) all keys are released (off) and (2) the hold pedal is not pressed (off). This was the first time that the tone could be changed.

Therefore, in Figure 1, if you press the hold pedal on the first beat of the Nth rate node, no matter where you switch the tone within interval ■, the tone will actually change only after the hold pedal is released. It starts from a certain measure N+1. In addition, even if you do not use the hold pedal, in the section ■ where the left hand is free, the right hand is playing a slur (playing method in which the next key is held down before releasing the previous key when changing keys), so at least one Two keys are turned on, and you can change and set the tone with your left hand at any time during this section.

In other words, the present invention allows a wider range of time in which tones can be set, making performance easier.

Embodiment FIG. 2 is a block diagram of an electronic musical instrument that is an embodiment of the present invention. In the figure, an operation section 1 detects the states of the keyboard, hold pedal, and operators for setting tone colors, etc., and sends the states to the sound source section 2 as performance information. The sound source section 2 receives this performance information and controls the musical tone forming section using the control device.

As a format for transmitting such performance information, there is a MIDI signal, which is an international standard that has been frequently used in recent years.

In the present application, since this transmission method is not unique, a description thereof will be omitted.

The hold pedal in the operation section L has the same function as what is generally called a damper pedal on a piano.It is normally operated with the foot, and if the hold pedal is on, the musical tone will not be heard as soon as the key is released. This is a switch that prevents the attenuation of the signal.

The sound source section 2 includes a control device and a plurality of sound sources, and the control device includes a CPU. This CPU has a performance information receiving device and various memories (ROM, RAM). This memory (RAM) is provided with a 1-bit key flag KF corresponding to 6 keys, a timbre flag PF, and a hold flag HF.

Reception of performance information is carried out using an interactive method, and when key on/off information is received, the above key flag K is
When the bit corresponding to the key F is set to "1" or "0", when the hold switch on/off information is received, rlJ or "O" is set to the hold flag HF, and when the tone setting information is received, the tone is set. Store "1" in flag PF.

FIG. 3 is a flow chart of the processing in the main routine of this CPU.

(1) If the tone flag PF is set, check the hold flag HF.

(2) If the hold flag HF is not set, check all key flags KF.

(3) If all the key flags KF are not set, change the timbre of the tone forming section. 4) Set the timbre flag PF to "0".

(5) Perform normal processing.

Note that the normal processing here refers to, for example, sound source management, control reading processing, and the like.

[Effects of the Invention] As described above, according to the present invention, it is possible to have a wide range of time for tone setting operations during a performance.
It becomes very easy to operate.

[Brief explanation of drawings]

FIG. 1 is a musical score example for explaining the present invention in detail, FIG. 2 is a block diagram for implementing the present invention, and FIG. 3 is a flowchart showing the operation of the present invention. Measure Nth Measure N+1 Figure 1 Operation section 1 Sound source section 2 Main routine

Claims (1)

[Scope of Claims] Means for detecting a key depression state, means for detecting a tone selection setting state, means for detecting a hold pedal operation state, and a musical tone for forming a musical sound based on the selected and set timbre information. and a tone forming means, which changes the tone of the musical tone forming means when it is detected that all keys are off and a hold pedal is off after the tone selection setting state has changed. musical instrument.