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Acoustic Channel Compensation at Mel-frequency Spectrum Domain  

Jeong, So-Young (Brain Science Research Center(BSRC) and also Division Of Electrical Engineering, Department of Electrical Engineering and Computer Science, Korea Advanced Institute of Science and Technology)
Oh, Sang-Hoon (Department of Information Communication Engineering, Mokwon University)
Lee, Soo-Young (BSRC and also Department of BioSystems, Korea Advanced Institute of Science and Technology)
Publication Information
The Journal of the Acoustical Society of Korea / v.22, no.1E, 2003 , pp. 43-48 More about this Journal
Abstract
The effects of linear acoustic channels have been analyzed and compensated at mel-frequency feature domain. Unlike popular RASTA filtering our approach incorporates separate filters for each mel-frequency band, which results in better recognition performance for heavy-reverberated speeches.
Keywords
Acoustic channel compensation; Channel deconvolution; Mel-frequency log-spectrum; Feature transformation; Robust speech recognition;
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