Patents by Inventor Yoshihisa Uemura

Yoshihisa Uemura 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).

  • Noise Suppression Estimation Device and Noise Suppression Device
    Publication number: 20100008520
    Abstract: A noise suppression estimation device calculates a noise index value which varies according to kurtosis of a frequence distribution of magnitude of a sound signal before or after suppression of the noise component, the noise index value indicating a degree of occurrence of musical noise after suppression of the noise component in a frequency domain. For example, the noise suppression estimation device calculates first kurtosis of a frequence distribution of magnitude of the sound signal before suppression of the noise component, calculates second kurtosis of a frequence distribution of magnitude of the sound signal after suppression of the noise component, and calculates the noise index value from the first kurtosis and the second kurtosis.
    Type: Application
    Filed: July 8, 2009
    Publication date: January 14, 2010
    Applicants: Yamaha Corporation, Nara Institute of Science and Technology National University Corporation
    Inventors: Hiroshi SARUWATARI, Yoshihisa Uemura, Kazunobu Kondo