Patents by Inventor Fumiaki Monma

Fumiaki Monma 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).

  • Speech analyzer detecting pitch frequency, speech analyzing method, and speech analyzing program
    Patent number: 8738370
    Abstract: A speech analyzer includes a speech acquiring section, a frequency converting section, an autocorrelation section, and a pitch detection section. The frequency converting section converts the speech signal acquired by the speech acquiring section into a frequency spectrum. The autocorrelation section determines an autocorrelation waveform by shifting the frequency spectrum along the frequency axis. The pitch detection section determines the pitch frequency from the distance between two local crests or troughs of the autocorrelation waveform.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: May 27, 2014
    Assignees: AGI Inc.
    Inventors: Shunji Mitsuyoshi, Kaoru Ogata, Fumiaki Monma
  • Speech analyzer detecting pitch frequency, speech analyzing method, and speech analyzing program
    Publication number: 20090210220
    Abstract: A speech analyzer includes a speech acquiring section, a frequency converting section, an autocorrelation section, and a pitch detection section. The frequency converting section converts the speech signal acquired by the speech acquiring section into a frequency spectrum. The autocorrelation section determines an autocorrelation waveform by shifting the frequency spectrum along the frequency axis. The pitch detection section determines the pitch frequency from the distance between two local crests or troughs of the autocorrelation waveform.
    Type: Application
    Filed: June 2, 2006
    Publication date: August 20, 2009
    Inventors: Shunji Mitsuyoshi, Kaoru Ogata, Fumiaki Monma