发明名称 |
System for reproducing sound information |
摘要 |
In an environment of acoustic noise, such as a car radio playing in traffic or engine noise, both the volume (AGC) and dynamic range (Compression) of the audio amplifier are controlled by a local ambient acoustic noise sensor, such that gain is increased and dynamic range decreased simultaneously with increased ambient noise.
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申请公布号 |
US4061874(A) |
申请公布日期 |
1977.12.06 |
申请号 |
US19760692441 |
申请日期 |
1976.06.03 |
申请人 |
FRICKE, J. P.;MULLER, ULRICH R. |
发明人 |
FRICKE, J. P.;MULLER, ULRICH R. |
分类号 |
H03G3/32;H03G9/02;(IPC1-7):H03G3/20;H03G9/18 |
主分类号 |
H03G3/32 |
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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