Acoustic model training method, speech recognition method, acoustic model training apparatus, speech recognition apparatus, acoustic model training program, and speech recognition program

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United States of America

PATENT NO 11264044
APP PUB NO 20210193161A1
SERIAL NO

16074367

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Abstract

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To begin with, an acoustic model training apparatus extracts speech features representing speech characteristics, and calculates an acoustic-condition feature representing a feature of an acoustic condition of the speech data using an acoustic-condition calculation model that is represented as a neural network, based on an acoustic-condition calculation model parameter characterizing the acoustic-condition calculation model. The acoustic model training apparatus then generates an adjusted parameter that is an acoustic model parameter adjusted based on the acoustic-condition feature, the acoustic model parameter characterizing an acoustic model represented as a neural network to which an output layer of the acoustic-condition calculation model is coupled. The acoustic model training apparatus then updates the acoustic model parameter based on the adjusted parameter and the speech features, and updates the acoustic-condition calculation model parameters based on the adjusted parameter and the speech features.

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Patent Owner(s)

  • NIPPON TELEGRAPH AND TELEPHONE CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Delcroix, Marc Soraku-gun, JP 21 60
Kinoshita, Keisuke Soraku-gun, JP 37 333
Nakatani, Tomohiro Soraku-gun, JP 43 150
Ogawa, Atsunori Soraku-gun, JP 13 53
Yoshioka, Takuya Soraku-gun, JP 32 256

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