Title:
BOUNDARY ESTIMATING METHOD FOR VOICE RECOGNITION AND VOICE RECOGNITION DEVICE
Document Type and Number:
Japanese Patent JP3533696
Kind Code:
B2
Abstract:
PURPOSE: To execute design improved in accuracy with substantially no influence of lack of leaning data by calculating a common probability density not depending on the kinds of the boundaries of voices and multiplying this probability density and multinominal coeffts.
CONSTITUTION: A time window section 7 in a boundary detecting section 7 extracts the melcepstrum coeffts. of 0 to 7th order in a range of time width 10 frames from a characteristic parameter time series as 80-dimension vector (fixed length segments) and outputs the time series R2 of these fixed length segments. A common probability density calculating section 18 calculates the probability density of the 80 dimension gauss distribution for the fixed length segments of the central time. Boundary likelihood calculating sections 19-1 to 19-K calculate the likelihood at which the vocal sound boundaries in the voices exist at the center of the fixed length segments R2 and output the same as boundary likelihood time series C1 to CK. An HMM calculating section calculates the recurrence formulas based on viterbi algorithm by referencing the results of the boundary detection of the boundary detecting section 7 and the HMM parameters.
Inventors:
Abe, Yoshiharu
Application Number:
JP5060694A
Publication Date:
May 31, 2004
Filing Date:
March 22, 1994
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
International Classes:
G10L15/14; G10L15/02; (IPC1-7): G10L15/04; G10L15/14
Other References:
阿部， 中島，境界尤度の信頼度を考慮した状態間遷移束縛型ＨＭＭによる音韻記述，日本音響学会平成６年度春季研究発表会講演論文集，日本，１９９４年 ３月，２−Ｐ−１１，Ｐａｇｅｓ １７９−１８０
阿部， 中島，状態間遷移束縛型ＨＭＭによる音韻記述，日本音響学会平成５年度秋季研究発表会講演論文集，日本，１９９３年１０月，１−８−５，Ｐａｇｅｓ ９−１０
阿部， 中島，状態間遷移束縛型ＨＭＭによる音韻記述，日本音響学会平成５年度秋季研究発表会講演論文集，日本，１９９３年１０月，１−８−５，Ｐａｇｅｓ ９−１０
Attorney, Agent or Firm:
宮田 金雄 （外１名）