发明名称 SYSTEM AND METHOD FOR IMPROVING ROBUSTNESS OF SPEECH RECOGNITION USING VOCAL TRACT LENGTH NORMALIZATION CODEBOOKS
摘要 Disclosed are systems, methods, and computer readable media for performing speech recognition. The method embodiment comprises selecting a codebook from a plurality of codebooks with a minimal acoustic distance to a received speech sample, the plurality of codebooks generated by a process of (a) computing a vocal tract length for a each of a plurality of speakers, (b) for each of the plurality of speakers, clustering speech vectors, and (c) creating a codebook for each speaker, the codebook containing entries for the respective speaker's vocal tract length, speech vectors, and an optional vector weight for each speech vector, (2) applying the respective vocal tract length associated with the selected codebook to normalize the received speech sample for use in speech recognition, and (3) recognizing the received speech sample based on the respective vocal tract length associated with the selected codebook.
申请公布号 US2008319741(A1) 申请公布日期 2008.12.25
申请号 US20070765527 申请日期 2007.06.20
申请人 AT&T CORP. 发明人 GILBERT MAZIN
分类号 G10L15/00 主分类号 G10L15/00
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