Speech recognition apparatus of speaker adaptation type

Details Speech recognition apparatus of speaker adaptation type Speech recognition apparatus of speaker adaptation type

1991-04-23

1992-09-22

Kemeny, Emanuel S.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381 42, G10L 500

Patent

active

051504499

ABSTRACT:
A speech recognition apparatus of the speaker adaptation type operates to recognize an inputted speech pattern produced by a particular speaker by using a reference pattern produced by a voice of a standard speaker. The speech recognition apparatus is adapted to the speech of the particular speaker by converting the reference pattern into a normalized pattern by a neural network unit, internal parameters of which are modified through a learning operation using a normalized feature vector of the training pattern produced by the voice of the particular speaker and normalized on the basis of the reference pattern, so that the neural netowrk unit provides an optimum output similar to the corresponding normalized feature vector of the training pattern. In the alternative, the speech recognition apparatus operates to recognize an inputted speech pattern by converting the inputted speech pattern into a normalized speech pattern by the neural network unit, internal parameters of which are modified through a learning operation using a feature vector of the reference pattern normalized on the basis of the training pattern, so that the neural network unit provides an optimum output similar to the corresponding normalized feature vector of the reference pattern and recognizing the normalized speech pattern according to the reference pattern.

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IBM Technical Disclosure Bulletin, vol. 21, No. 8, Jan. 1979, pp. 3413-3414, New York, U.S.: C. C. Tappert et al.; "Fast training method for speech recognition systems".
ICASSP-82, Proceedings-IEEE International Conference on Acoustics, Speech and Signal Processing, Paris, 3rd.5th May 1982, vol. 3, pp. 1657-1660, IEEE, New York, U.S.; J. Jaschul: "Speaker adaptation by a linear transformation with optimised parameters".

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