Patents by Inventor Astunori OGAWA

Astunori OGAWA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ACOUSTIC MODEL TRAINING METHOD, SPEECH RECOGNITION METHOD, ACOUSTIC MODEL TRAINING APPARATUS, SPEECH RECOGNITION APPARATUS, ACOUSTIC MODEL TRAINING PROGRAM, AND SPEECH RECOGNITION PROGRAM
    Publication number: 20210193161
    Abstract: 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.
    Type: Application
    Filed: January 26, 2017
    Publication date: June 24, 2021
    Applicant: NIPPON TELEGRAPH AND TELEPHPNE CORPORATION
    Inventors: Marc DELCROIX, Keisuke KINOSHITA, Astunori OGAWA, Takuya YOSHIOKA, Tomohiro NAKATANI