发明名称 |
Voice encoder using a voice activity detector |
摘要 |
A voice encoder using a voice activity detector in which two predictive coefficients available from an adaptive predictor in the voice encoder are received for each sample of a input voice signal of the voice encoder. Average values of the predictive coefficients are calculated for each fixed period to decide whether the period is a voice active period or a voice non-active period as a result of comparing the average values with respective ranges of predictive coefficient threshold values predetermined from respective distributions of the two predictive coefficients. Voice active/non-active flags indicative of the voice active period and the voice non-active period are obtained for voice operate switch exchange of encoded of the voice encoder.
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申请公布号 |
US5509102(A) |
申请公布日期 |
1996.04.16 |
申请号 |
US19930171198 |
申请日期 |
1993.12.21 |
申请人 |
KOKUSAI ELECTRIC CO., LTD. |
发明人 |
SASAKI, SEISHI |
分类号 |
G10L11/02;(IPC1-7):G10L9/00 |
主分类号 |
G10L11/02 |
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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