发明授权
- 专利标题： Method of transmitting speech using discontinuous transmission and comfort noise
- 专利标题（中）： 使用不连续传输和舒适噪声发送语音的方法
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申请号： US09305325申请日： 1999-05-05
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公开(公告)号： US06381568B1公开(公告)日： 2002-04-30
- 发明人: Lynn Michele Supplee , Richard A. Dean , Mary A Kohler
- 申请人： Lynn Michele Supplee , Richard A. Dean , Mary A Kohler
- 主分类号： G10L1106
- IPC分类号： G10L1106
摘要：
Speech transmission method by initializing silence, transmit, and blank-period counters; receiving frame; determining frame is speech; if transmit counter is zero and blank-period counter is less than x then discard frame, increment blank-period counter, and return to second step; if transmit counter is zero, blank-period counter greater than x−1, and frame not speech then discard frame, increment blank-period counter, and return to second step; if transmit counter is zero, blank-period counter greater than x−1, and frame is speech then set transmit counter to one, set blank-period counter to zero, set silence counter to zero, encode frame, transmit encoded frame, and return to second step; if transmit counter is one, frame not speech, and silence counter less than y then encode frame, transmit encoded frame, increment silence counter, and return to second step; if transmit counter is one, frame not speech, and silence counter greater than y+z−2 then set transmit counter to zero, discard frame, encode comfort noise, transmit encoded comfort noise, increment silence counter, and return to second step; if transmit counter is one, frame not speech, and silence counter greater than y−1 then discard frame, encode comfort noise, transmit encoded comfort noise, increment silence counter, and return to second step; and if transmit counter is one, frame is speech, and silence counter less than y+z then encode frame, transmit encoded frame, set silence counter to zero, and return to second step.