发明公开
- 专利标题： Noise reduction in speech transmitter circuits
- 专利标题（中）： 语音发射机电路中的噪声降低
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申请号： EP89309822.8申请日： 1989-09-27
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公开(公告)号： EP0361884A3公开(公告)日： 1991-09-04
- 发明人: Barnes, George John Preston , Tester, Norman William
- 申请人： NORTHERN TELECOM LIMITED
- 申请人地址： World Trade Center of Montreal, 380 St. Antoine Street West 8th Floor Montreal, Quebec H2Y 3Y4 CA
- 专利权人： NORTHERN TELECOM LIMITED
- 当前专利权人： NORTHERN TELECOM LIMITED
- 当前专利权人地址： World Trade Center of Montreal, 380 St. Antoine Street West 8th Floor Montreal, Quebec H2Y 3Y4 CA
- 代理机构： Dennis, Mark Charles
- 优先权： GB8823080 19880930
- 主分类号： H04M1/60
- IPC分类号： H04M1/60
摘要：
A noise reduction arrangement for a speech transmitter circuit including a noise operated gain adjusting device and a voice operated gain adjusting device having a preset gain, wherein the noise operated gain adjusting device is arranged to control the preset gain in the voice operated gain adjusting device.
公开/授权文献
- EP0361884B1 Noise reduction in speech transmitter circuits 公开/授权日：1994-10-19
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