On the potential of channel selection for recognition of reverberated speech with multiple microphones
作者： Climent Nadeu Camprubí , Martin Wolf
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摘要: The performance of ASR systems in a room environment with distant microphones is strongly affected by reverberation. As the degree signal distortion varies among acoustic channels (i.e. microphones), the recognition accuracy can benefit from a proper channel selection. In this paper, we experimentally show that there exists large margin for WER reduction selection, and discuss several possible methods which do not require any a-priori classification. Moreover, using a LVCSR task, significant shown simple technique uses measure computed sub-band time envelope various microphone signals.
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