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- W1965664780 abstract "Mel frequency cepstral coefficients (MFCC) are the most widely used speech features in automatic speech recognition systems, primarily because the coefficients fit well with the assumptions used in hidden Markov models and because of the superior noise robustness of MFCC over alternative feature sets such as linear prediction-based coefficients. The authors have recently introduced human factor cepstral coefficients (HFCC), a modification of MFCC that uses the known relationship between center frequency and critical bandwidth from human psychoacoustics to decouple filter bandwidth from filter spacing. In this work, the authors introduce a variation of HFCC called HFCC-E in which filter bandwidth is linearly scaled in order to investigate the effects of wider filter bandwidth on noise robustness. Experimental results show an increase in signal-to-noise ratio of 7 dB over traditional MFCC algorithms when filter bandwidth increases in HFCC-E. An important attribute of both HFCC and HFCC-E is that the algorithms only differ from MFCC in the filter bank coefficients: increased noise robustness using wider filters is achieved with no additional computational cost." @default.
- W1965664780 created "2016-06-24" @default.
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- W1965664780 date "2004-09-01" @default.
- W1965664780 modified "2023-09-27" @default.
- W1965664780 title "Exploiting independent filter bandwidth of human factor cepstral coefficients in automatic speech recognition" @default.
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- W1965664780 doi "https://doi.org/10.1121/1.1777872" @default.
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