Title:
音声処理装置及びそれを用いた音声合成装置。
Document Type and Number:
Japanese Patent JP5159279
Kind Code:
B2
Abstract:
An information extraction unit extracts spectral envelope information of L-dimension from each frame of speech data by discrete Fourier transform. The spectral envelope information is represented by L points. A basis storage unit stores N bases (L>N>1). Each basis is differently a frequency band having a maximum as a peak frequency in a spectral domain having L-dimension. A value corresponding to a frequency outside the frequency band along a frequency axis of the spectral domain is zero. Two frequency bands of which two peak frequencies are adjacent along the frequency axis partially overlap. A parameter calculation unit minimizes a distortion between the spectral envelope information and a linear combination of each basis with a coefficient for each of L points of the spectral envelope information by changing the coefficient, and sets the coefficient of each basis from which the distortion is minimized to a spectral envelope parameter of the spectral envelope information.
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Inventors:
Tamura Masanori
Katsumi Tsuchiya
Takehiko Kagoshima
Katsumi Tsuchiya
Takehiko Kagoshima
Application Number:
JP2007312336A
Publication Date:
March 06, 2013
Filing Date:
December 03, 2007
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G10L25/18; G10L13/02; G10L13/033; G10L13/06; G10L25/27; G10L25/90
Domestic Patent References:
| JP2005258440A | ||||
| JP2006251712A | ||||
| JP2002268698A |
Foreign References:
| WO2005062291A1 |
Other References:
若子武士 他,"対数スペクトルの任意基底関数による展開に基づく音声のスペクトル推定",電子情報通信学会論文誌D-II,1999年12月25日,Vol.J82-D-II,No.12,p.2203-2211
川本敏勝,"NMFを用いた和音からの基底音推定",電子情報通信学会2000年総合大会講演論文集,2000年 3月 7日,p.198
川本敏勝,"NMFを用いた和音からの基底音推定",電子情報通信学会2000年総合大会講演論文集,2000年 3月 7日,p.198
Attorney, Agent or Firm:
Tamako Tsutada
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita