Patents by Inventor Takanori Miyamoto

Takanori Miyamoto 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).

  • Method and apparatus for extracting speech pitch
    Patent number: 4653098
    Abstract: A plurality of pitch period candidates are selected from a peak of correlation of a speech waveform in a current frame from which a pitch period is to be extracted, and a speech pitch is selected from the candidates by referring to a guide index which is precalculated based on pitch periods extracted in past frames. The guide index is an average of the pitch periods in the past frames.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: March 24, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Nakata, Takanori Miyamoto