Labelling speech using context-dependent acoustic prototypes

Details Labelling speech using context-dependent acoustic prototypes Labelling speech using context-dependent acoustic prototypes

1993-02-08

1995-10-03

Downs, Robert W.

395 2, 395 24, 395 251, 395 252, 395 265, 395 263, G10L 506, G10L 900

Patent

active

054558891

ABSTRACT:
The present invention relates to labelling of speech in a context-dependent speech recognition system. When labelling speech using context-dependent prototypes the phone context of a frame of speech needs to be aligned with the appropriate acoustic parameter vector. Since aligning a large amount of data is difficult if based upon arc ranks, the present invention aligns the data using context-independent acoustic prototypes. The phonetic context of each phone of the data is known. Therefore after the alignment step the acoustic parameter vectors are tagged with a corresponding phonetic context. Context-dependent prototype vectors exists for each label. For all labels the context-dependent prototype vectors having the same phonetic context as the tagged acoustic parameter vector are determined. For each label the probability of achieving the tagged acoustic parameter vector is determined given each of the context-dependent label prototype vectors having the same phonetic context as the tagged acoustic parameter vector. The label with the highest probability is associated with the context-dependent acoustic parameter vector.

REFERENCES:
patent: 4819271 (1989-04-01), Bahl et al.
patent: 4820059 (1989-04-01), Miller et al.
patent: 4933973 (1990-06-01), Porter
patent: 4977599 (1990-12-01), Bahl et al.
patent: 5165007 (1992-11-01), Bahl et al.
patent: 5168524 (1992-12-01), Kroeker et al.
patent: 5208897 (1993-05-01), Hutchins
Schmidbauer et al, "An LVQ based reference model for speaker-adaptive speech recognition"; ICASSP-92: 1992 IEEE International Conference on Acoustics, Speech and Signal Processing, pp. 441-444 vol. 1. 23-26 Mar. 1992.
Sehhati, "An interactive tool for segmentation and acoustic-phonetic analysis of speech SPANEX"; Sixth International Conference on Digital Processing of Signals in Communications, pp. 251-255, 2-6 Sep. 1991.
Kepuska et al, "Phonemic speech recognition system based on a neural network"; SOUTHEASTCON '89 Proceedings. Energy and Information Technologies in the Southeast, pp. 770-775 vol. 2. 9-12 Apr. 1989.

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