2016
DOI: 10.4218/etrij.16.0115.0994
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Online Blind Channel Normalization Using BPF-Based Modulation Frequency Filtering

Abstract: We propose a new bandpass filter (BPF)-based online channel normalization method to dynamically suppress channel distortion when the speech and channel noise components are unknown. In this method, an adaptive modulation frequency filter is used to perform channel normalization, whereas conventional modulation filtering methods apply the same filter form to each utterance. In this paper, we only normalize the two mel frequency cepstral coefficients (C0 and C1) with large dynamic ranges; the computational compl… Show more

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