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Design of an embedded speech-centric interface for applications in handheld terminals
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The synergy between bounded-distance HMM and spectral subtraction for robust speech recognition
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The Synergy between Bounded-Distance HMM and Spectral Subtraction for Robust Speech Recognition
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In: ISSN: 0167-6393 ; EISSN: 1872-7182 ; Speech Communication ; https://hal.archives-ouvertes.fr/hal-00592583 ; Speech Communication, Elsevier : North-Holland, 2009, 52 (2), pp.123. ⟨10.1016/j.specom.2009.09.002⟩ (2009)
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Characterization of Healthy and Pathological Voice Through Measures Based on Nonlinear Dynamics
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Band-pass filtering of the time sequences of spectral parameters for robust wireless speech recognition
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Abstract:
In this paper we address the problem of automatic speech recognition when wireless speech communication systems are involved. In this context, three main sources of distortion should be considered: acoustic environment, speech coding and transmission errors. Whilst the first one has already received a lot of attention, the last two deserve further investigation in our opinion. We have found out that band-pass filtering of the recognition features improves ASR performance when distortions due to these particular communication systems are present. Furthermore, we have evaluated two alternative configurations at different bit error rates (BER) typical of these channels: band-pass filtering the LP-MFCC parameters or a modification of the RASTA-PLP using a sharper low-pass section perform consistently better than LP-MFCC and RASTA-PLP, respectively. ; Publicado
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Keyword:
Modulation spectrum; RASTA-PLP; Robust speech recognition; Telecomunicaciones; Transmission errors; Wireless speech recognition
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URL: https://doi.org/10.1016/j.specom.2006.07.007 http://hdl.handle.net/10016/2323
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