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Musical sound generator

A technology for generating devices and musical sounds, applied in the direction of electroacoustic musical instruments, instruments, etc., can solve the problems of time, difficulty, cost and time.

Inactive Publication Date: 2002-08-07
SONY COMPUTER ENTERTAINMENT INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cost and time are required for development of new hardware
Therefore, it is not easy to deal with hardware
[0004] On the other hand, if all the processing is performed by software, it takes time for the processing and there is a problem of delaying the sound
This becomes a prominent problem when combining and outputting picture and sound

Method used

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Embodiment Construction

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0013] figure 1 It is a diagram showing the hardware structure of the musical tone generating device according to the embodiment of the present invention. The musical tone generating device of this embodiment accepts input operations from the outside, and is suitable for an entertainment device that outputs sound and images.

[0014] The musical tone generating apparatus of this embodiment includes a main CPU (Central Processing Unit) 110, a memory 120, an image processor 130, a sub CPU 210, a sound processor 220, a memory 230, a buffer 240, and a speaker 300. In addition, the main CPU 110, the memory 120, and the image processor 130 are connected by a high-speed bus 150, and the sub CPU 210, the sound processor 220, the memory 230, and the buffer 240 are connected by a low-speed bus 250. The high-speed bus 150 and the low-speed bus 250 are connected through a bus interfa...

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Abstract

A musical sound generator is provided using a combination of software processing and hardware processing. A sub CPU (210) generates note data based on score data (340). A main CPU (110) refers to a sound source file to convert note data and generate PCM data. A sound processor (220) converts note data using a sound synthesizer circuit (221) to generate PCM data. A D A converter (222) converts two PCM data into analog voltage signals. A speaker (300) outputs sound in response to the voltage signals.

Description

Technical field [0001] The present invention relates to music generation technology, in particular to the technology of decentralizing the generation of sound data into hardware and software. Background technique [0002] A computer-controlled musical tone generator that reads musical score data and outputs the sound indicated by the musical score data is well known. In this musical sound generating device, a computer usually controls a sound processor dedicated to sound processing to synthesize sound, and after D / A conversion is performed, the speaker emits sound. [0003] However, as user needs increase, more realistic and live sound is required. In the prior art, only by redesigning the sound processor, manufacturing new hardware and mounting it on the music generating device, can this demand be met. However, it takes cost and time to develop new hardware. Therefore, it is not easy to deal with with hardware. [0004] On the other hand, if all the processing i...

Claims

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Application Information

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IPC IPC(8): G10H1/00G10H1/42G10H7/00
CPCG10H7/004
Inventor 守田彻
Owner SONY COMPUTER ENTERTAINMENT INC
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