Referenced Items are not available for this document.
Recently, it has been shown that robustness of automatic speech recognition (ASR) against band-limited additive noises may be improved by multiband ASR (MBASR) approaches. In an M-subband MBASR system, the channels in the full-band filterbank are divided into M subbands, usually of equal partitions, and subband mel-frequency cepstral coefficients (MFCCs) are computed from each filterbank partition using the discrete cosine transform. However, there is not as yet any analysis on the relationship between full-band and multiband MFCCs. In this letter, we show that the (Mj)th full-band MFCC is the sum of or difference between the Mjth multiband MFCCs multiplied by /spl radic/M.
Published in:
Signal Processing Letters, IEEE
(Volume:9
,
Issue:
8
)
Date of Publication: Aug. 2002
- Page(s):
- 241 - 244
- ISSN :
- 1070-9908
- INSPEC Accession Number:
- 7405148
- Digital Object Identifier :
- 10.1109/LSP.2002.803007
- Date of Current Version :
- 07 November 2002
- Issue Date :
- Aug. 2002
- Sponsored by :
- IEEE Signal Processing Society
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