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专利名称：DIGITAL VOICE DETECTOR
发明人：POMPER W,US,WILHELM C,US,YANCEY L,US申请号：US39118673申请日：19730824公开号：US3836714A公开日：19740917
摘要：Digital apparatus for detecting the presence of voice in a vocoder output signalto produce a push-to-talk (PTT) signal for simplex operation of communication
apparatus. When voice is detected by shift register and logic detection apparatus, a signalis generated that sets a hold circuit which supplies a PTT output for generation of anisolated key signal. The hold circuit is reset each time that voice is detected in thevocoder signal; therefore, PTT is maintained until there are no voice signals presentduring a complete hold period which is switch-selectable. A sampling signal for voicedetection and a synchronization signal are supplied to the voice detection circuit byinterface circuitry.
申请人：NAVY,US
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