发明名称 Speech operated noise attenuation device
摘要 A speech operated noise attenuation device (SONAD) includes circuitry to measure the noise level in an audio channel. The output of the noise measurement circuitry provides a control signal to an audio attenuator which varies the intersyllable attenuation of the background noise according to the noise level present in the audio.
申请公布号 US5036540(A) 申请公布日期 1991.07.30
申请号 US19890413910 申请日期 1989.09.28
申请人 MOTOROLA, INC. 发明人 EASTMOND, BRUCE C.
分类号 H03G3/32;H03G3/34 主分类号 H03G3/32
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