Jiaquan Huo

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The proper control of acoustic echoes is of vital significance in modern communication systems. Acoustic echoes are commonly combatted by means of acoustic echo cancellation. A critical issue in acoustic echo cancellation is the control of adaptation of the echo cancellation filter with the possible presence of near-end speech activities. In this paper, a(More)
Acoustic echo control is of vital interest for hands-free operation of telecommunications equipment. An important property of an acoustic echo controller is its capability to handle double-talk and be able to operate in real time. In this paper, we propose a novel hardware architecture to support a robust adaptive algorithm in combination with a two-path(More)
A low cost method for detecting echo path variation is proposed. A detection parameter is constructed by averaging the coherence function between the synthetic echo and the error signal over time and frequency. The detection delay caused by the time averaging is accounted for by setting different detection thresholds for the rising and dropping edges of the(More)
a r t i c l e i n f o a b s t r a c t Acoustic echo control is of vital interest for hands-free operation of telecommunications equipment. An important property of an acoustic echo canceller is its capability to handle double-talk and be able to operate in real time. When it is applied to intelligent voice control device, it is important to suppress the(More)
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