发明名称 |
Multiple input audio program system |
摘要 |
Multiple input sound amplifying and activation system including at least two microphones where an input channel is provided for each microphone. Each input channel provides a rectified signal to a summing device which sums the signals from the channels to generate a reference signal. Each input channel also includes a comparator to compare the reference signal with the signal received by the channel and provides a first control signal and second control signal in response to ratio between the reference signal and the channel input signal. The control signals operate a program signal amplifier to provide a program signal to an attenuator which attenuates the signal in response to the number of active channels.
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申请公布号 |
US4359602(A) |
申请公布日期 |
1982.11.16 |
申请号 |
US19800137783 |
申请日期 |
1980.04.07 |
申请人 |
PONTO, ROBERT A.;MARTIN, HARDISON G. |
发明人 |
PONTO, ROBERT A.;MARTIN, HARDISON G. |
分类号 |
H03G3/34;H04H60/04;H04R3/00;H04R27/00;(IPC1-7):H04H1/02;H04R1/02 |
主分类号 |
H03G3/34 |
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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