JPS61183695A - Musical sound generator - 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 Field of Application This invention relates to electronic musical instruments, and by reproducing the changes in timbre caused not only by the striking force but also by the course of the striking point, etc.
This invention relates to a musical tone generating device that enables a wide range of expression.

Conventional technology has existed to imitate the expressive power of natural musical instruments, for example, by measuring the speed at which keys are pressed on a keyboard and changing the timbre, volume, etc. accordingly (hereinafter referred to as touch response). An example of its configuration is shown in FIG.

In FIG. 3, the address control means 9 supplies the waveform memory 8 with an address control signal for reading out the waveform.

With this address control signal, the musical waveform previously stored in the waveform memory 8 is read out as a digital value, and the multiplier 12
is supplied to On the other hand, the touch response data from the touch response detection means 14 which converts the hitting force into velocity etc. is converted by the level control data creating means 13 into level control data corresponding to the hitting force and is supplied to the multiplier 12.

In this way, the waveform data from the waveform memory 8 and the level data from the level control data creation means 13 are multiplied by the multiplier 12, resulting in a level-controlled form.
The digital value is converted into an analog value by the /A conversion circuit 15, and then the clock removal filter 16 and the amplifier 1
7 and is output from the speaker 18.

In this way, there was a technique to imitate the expressive power of natural musical instruments by changing the volume depending on the striking force.

Problems that the invention sought to solve In such conventional examples, instruments such as cymbals and guitars whose timbre changes depending on the position of the player and where they are played, cannot be expressed naturally by only the force with which they are struck or played. The problem was that the sound ended up being monotonous and lacking in character. For example, taking a cymbal as an example, in FIG. 4, the sound at point I and the sound at point ■ are similar in tone quality, but are slightly different. At point ■, it becomes a metallic sound called a cup sound, and the timbre changes continuously from point l, ■ to point ■, and these timbre differences make the sound of the cymbal performance come alive.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention detects or artificially creates fluctuations caused by the hitting position, the playing position, etc., and uses the vibrations in the waveform data output from the waveform memory. It was designed to bring about change.

Function The present invention, with the above-described configuration, allows the output waveform to change depending on the playing condition, etc., so it is possible to express the diversity of tones inherent in natural musical instruments, and expand the range of performance expression. It can be expanded further.

Example FIG. 2 is a block diagram showing one embodiment of the present invention.

In FIG. 2, the address control means 9 supplies the waveform memory 8 with an address control signal for reading out the waveform.

On the other hand, by providing a fluctuation generating means 11 for detecting or creating changes caused by performance conditions, etc., information for changes in timbre can be obtained.

The waveform switching control means 10 creates an address in which the corresponding waveform data is stored based on the information for timbre change from the fluctuation creation means 11, and stores the address in the waveform memory together with the address control signal from the address control means 9. 8, and outputs waveform data corresponding to a predetermined tone color to a multiplier 12.

After the multiplier 12, the operation is exactly the same as that described in the conventional example of FIG. 4, and level control corresponding to the touch response is performed and the analog value is output from the speaker 18.

Next, a more specific block diagram of the main parts of the above embodiment is shown in FIG.

In FIG. 1, 1 is a group of dot position detection switches;
As in the cymbal example described above, this is achieved by providing a plurality of sections as shown in the figure in order to detect the position of the hitting point, and providing a switch for each section. This is an embodiment of the fluctuation generating means 11.

The on-timing generation circuit 2, counter 3, clock generation circuit 4, and inhibition gate 5 are one embodiment of the address control means 9, and the encoder 6 and latch 7 are one embodiment of the waveform switching control means 10.

Next, the operation shown in FIG. 1 will be explained.

Information whose position is detected by the dot position detection switch group 1 is supplied to the on-timing generation circuit 2 and the encoder 6 as output data corresponding to each switch. In the on-timing generation circuit 2, if any one switch changes from off to on based on the on/off data of each switch from the hit point position detection switch group 1,
At that timing, a pulse is generated and supplied to the counter 3 and latch 7.

The counter 3 is once reset by a pulse from the on-timing generation circuit 2, then counts clocks from the clock generation circuit 4, and supplies the count value to the waveform memory 8. On the other hand, the top of the count output of the counter is connected to the prohibition input of the prohibition gate 5, and when the clock from the clock generation circuit 4 connected to the other input of the prohibition gate 5 reaches a predetermined count value, Works to prohibit. That is, the clock input to the counter 3 connected to the output of the prohibition gate 6 is prohibited. In this way, when one piece of waveform data stored in advance in the waveform memory 8 is read out, a readout address is supplied to the waveform memory so that the readout is stopped until the next reset is applied.

Further, the encoders encode the on/off data of each switch from the hit point position detection switch group 1 and supply it to the latch 7. The latch 7 latches the data from the encoder 6 using the pulse from the on-timing generation circuit 2, and after the first switch of the dot position detection switch group 1 is turned on, the second switch is turned on. Latch the encoded data in the first switch until it is turned on.

The data from the latch 7 acts on the waveform memory 8 to select the waveform corresponding to the dot position from among the plurality of waveforms stored in advance.

In this way, the waveform corresponding to the hitting point can be generated only once from the hitting timing.

The vibration creation means 1o described so far has mainly been described by detecting the hitting point position, but it is also possible to replace this with the playing position and the rubbing position, and it is also possible to use random rubbing using a random number generation circuit. It is also possible to achieve this by means of a girdling effect or by a combination of these means.

Effects of the Invention As described above, according to the present invention, changes in the performer (
This allows you to faithfully express the fluctuations in the sound, resulting in a more natural musical tone.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the main parts of a musical tone generating device according to an embodiment of the present invention, FIG. 2 is an overall view thereof, FIG. 3 is a block diagram showing an example of a conventional musical tone generating device, and FIG. FIG. 3 is a side view illustrating a cymbal hitting position. 1...Dot position detection switch group, 8...
・Waveform memory, 9...address control means, 1o
... Waveform switching control means, 11 ... Fluctuation creation means, 15 ... D/A conversion circuit, 17.1
8...Electroacoustic transducer. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure δ

Claims (3)

[Claims] (1) A waveform memory storing musical waveform data, an address control means for controlling the continuation address, a waveform switching control means for selecting the waveform data, and converting the digital data from the waveform memory into an acoustic signal. 1. A musical sound generating device, characterized in that, by providing a fluctuation creating means for the waveform switching means, different waveforms can be output even for sounds of the same musical instrument and the same pitch. (2) Claims characterized in that the vibration generating means is constituted by means for detecting the position of the player's hitting, plucking, etc., and outputs different waveform data depending on the positional information of the player's hitting, plucking, etc. The musical tone generating device according to item 1. (3) The fluctuation generating means is constituted by a random number generating circuit,
2. The musical tone generating device according to claim 1, wherein the musical tone generating device outputs waveform data that changes randomly.