A Delay-Flexible Stereo Acoustic Echo Cancellation for DFT-Based In-Car Communication (ICC) Systems
نویسندگان
چکیده
In-car communication (ICC) systems supporting speech communication in noise by reproducing amplified speech from the car cabin in the car cabin ask for low-delay acoustic echo cancellation (AEC). In this paper we propose a delay-flexible DFTbased stereo AEC capable of cancelling also the echoes stemming from the audio player or FM radio. For the price of a somewhat higher complexity we are able to reduce the 32 ms delay of the baseline down to 4 ms, loosing only 1 dB in ERLE while even preserving system distance properties.
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Stereophonic acoustic echo cancellation is one of the expanding areas in the field of the speech/multimedia communication systems. In a conventional stereophonic acoustic echo canceller, working in a stereo communication system, the existence of the strong cross-correlation between the input signals to the two channels has the problem of the low convergence speed of the weights of the adaptive ...
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