发明名称 |
ADAPTIVE SPEECH DETECTOR SYSTEM |
摘要 |
A speech detector circuit for selectively transmitting speech signals while suppressing ambient sound related signals comprises an input from a microphone producing a speech signal and an input from a microphone producing a noise signal. The circuit includes a comparator which compares the speech signal with peak values of the noise signal to produce a pulse signal which indicates when the speech signal exceeds a threshold and a discriminator responsive to the pulse signal to produce a detected speech signal when the pulse signal occurs within a selected period which is spaced from a preceding pulse signal by a selected period. |
申请公布号 |
WO8600133(A1) |
申请公布日期 |
1986.01.03 |
申请号 |
WO1985AU00121 |
申请日期 |
1985.06.06 |
申请人 |
PLESSEY AUSTRALIA PTY. LIMITED |
发明人 |
SPALDING, DAVID |
分类号 |
G10L15/20;G10L25/78;H04B1/46;H04R3/00;(IPC1-7):G01L5/00;H04B7/00;H04B1/44 |
主分类号 |
G10L15/20 |
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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