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Acoustic echo cancellation using a variable length adaptive filter
Acoustic echo cancellation using a variable length adaptive filter
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机译:使用可变长度自适应滤波器消除回声
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摘要
An audio conferencing system having a base station, a loud speaker and one or more microphones generally operates to receive a F.E. audio signal, play the signal, and to receive a N.E. audio signal at the microphone that includes the F.E. audio signal modified by an echo path and a N.E. audio signal. The base station includes an adaptive filter whose length is controlled to be variable depending upon activity detected at each of one or more filter elements comprising the adaptive filter.
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