发明名称 |
Method for talk/listen determination and multipoint conferencing system using such method |
摘要 |
A method for determining a talk/listen state using a dynamic threshold is provided that can be implemented in a multipoint control unit (12). An audio sample is received and represents sound measured during a sample time interval. An audio level is generated from the audio sample The audio level represents an average power level of the audio sample. A dynamic threshold is set by processing the audio level. The audio level is compared to the dynamic threshold. A talk/listen state is determined to be a talking state if the audio level is above the dynamic threshold and to be a listening state if the audio level is below the dynamic threshold. The previous steps are repeated for each audio sample in a sequential stream of received audio samples such that the dynamic threshold is maintained and used to determine the talk/listen state.
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申请公布号 |
US5768263(A) |
申请公布日期 |
1998.06.16 |
申请号 |
US19950546276 |
申请日期 |
1995.10.20 |
申请人 |
VTEL CORPORATION |
发明人 |
TISCHLER, PAUL V.;CLEMENTS, BILL |
分类号 |
H04M3/56;(IPC1-7):H04L12/16 |
主分类号 |
H04M3/56 |
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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