发明名称 |
Stable sound synthesizing circuit |
摘要 |
A digital/analog sound synthesizing circuit comprises an RC oscillator outputting a system basic frequency, a timing generator converting the basic frequency into timing signals, a sound synthesizer producing sound numerical code data, and a digital/analog converter outputting an analog signal to drive a speaker. A voltage stabilizing circuit controls the RC oscillator and the digital/analog converter to eliminate sound frequency and volume instability.
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申请公布号 |
US5784475(A) |
申请公布日期 |
1998.07.21 |
申请号 |
US19940342552 |
申请日期 |
1994.11.21 |
申请人 |
UNITED MICROELECTRONICS CORPORATION |
发明人 |
HUANG, CHI-MAO;LIN, YU-CHIH;CHEN, TSUNG-MIN |
分类号 |
G10H1/00;G10H5/00;(IPC1-7):H03G3/00 |
主分类号 |
G10H1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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