Presentation 1996/12/13
Acoustic Model Adaptation by Taylor Series
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) This paper presents a new approach against environmental noise, an acoustic model adaptation technique based on the Taylor series. Using an HMM composition, a model containing noise should be composed from a speech model and a noise model each time when environmental noise changes. From the viewpoint of a "noise adaptation" approach, we modify an acoustic model "from one noise to another". This makes it possible to adapt the acoustic model at a low computation cost. In an HMM composition, non-linear conversion from cepstrum parameters is required. To accomplish a fast model adaptation, this paper uses first-order terms of the Taylor series. Based on the experimental results, we confirm a low computation cost for the adaptation processes, and the need for a small amount of noise data for the model adaptation.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) acoustic model / environmental noise / noise adaptation / Taylor series
Paper # NLC96-47,SP96-78
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Conference Information
Committee NLC
Conference Date 1996/12/13(1days)
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Place (in English)
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Paper Information
Registration To Natural Language Understanding and Models of Communication (NLC)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Acoustic Model Adaptation by Taylor Series
Sub Title (in English)
Keyword(1) acoustic model
Keyword(2) environmental noise
Keyword(3) noise adaptation
Keyword(4) Taylor series
1st Author's Name Yoshikazu YAMAGUCHI
1st Author's Affiliation NTT Human Interface Laboratories()
2nd Author's Name Jun-ichi TAKAHASHI
2nd Author's Affiliation NTT System Electronics Laboratories
3rd Author's Name Satoshi TAKAHASHI
3rd Author's Affiliation NTT Human Interface Laboratories
4th Author's Name Shigeki SAGAYAMA
4th Author's Affiliation NTT Human Interface Laboratories
Date 1996/12/13
Paper # NLC96-47,SP96-78
Volume (vol) vol.96
Number (no) 420
Page pp.pp.-
#Pages 8
Date of Issue