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WIDEBAND ACOUSTIC ECHO CANCELLATION APPARATUS WITH ADAPTIVE TAIL LENGTH IN EMBEDDED SYSTEM, AND WIDEBAND ACOUSTIC ECHO CANCELLATION METHOD
WIDEBAND ACOUSTIC ECHO CANCELLATION APPARATUS WITH ADAPTIVE TAIL LENGTH IN EMBEDDED SYSTEM, AND WIDEBAND ACOUSTIC ECHO CANCELLATION METHOD
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机译:嵌入式系统中具有自适应尾长的宽带声学回声消除装置及宽带声学回声消除方法
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摘要
A wideband acoustic echo cancellation apparatus with an adaptive tail length in an embedded system, and a wideband acoustic echo cancellation method are provided, and the wideband acoustic echo cancellation apparatus may include a delay length calculating unit to calculate a delay length of an echo path, using a near-end signal and a far-end signal, an adaptive filter implementing unit to implement an adaptive filter based on the calculated delay length, using selected coefficients, and an error calculating unit to search for three intervals having a largest impulse response value from all intervals of a tail of the adaptive filter, and to calculate an error during an interval in which the selected coefficients are used.
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