Patents by Inventor Aiko KAWANAKA

Aiko KAWANAKA 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).

  • Sound separation device and sound separation method
    Patent number: 9432789
    Abstract: A sound separation device includes: a signal obtainment unit which obtains a plurality of acoustic signals including a first acoustic signal and a second acoustic signal; a differential signal generation unit which generates a differential signal that is a signal representing a difference in a time domain between the first acoustic signal and the second acoustic signal; an acoustic signal generation unit which generates, using at least one acoustic signal among the acoustic signals, a third acoustic signal; and an extraction unit which generates a frequency signal by subtracting, from a signal obtained by transforming the third acoustic signal into a frequency domain, a signal obtained by transforming the differential signal into a frequency domain, and generates a separated acoustic signal by transforming the generated frequency signal into a time domain.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: August 30, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shinichi Yoshizawa, Keizo Matsumoto, Aiko Kawanaka
  • SOUND SEPARATION DEVICE AND SOUND SEPARATION METHOD
    Publication number: 20140247947
    Abstract: A sound separation device includes: a signal obtainment unit which obtains a plurality of acoustic signals including a first acoustic signal and a second acoustic signal; a differential signal generation unit which generates a differential signal that is a signal representing a difference in a time domain between the first acoustic signal and the second acoustic signal; an acoustic signal generation unit which generates, using at least one acoustic signal among the acoustic signals, a third acoustic signal; and an extraction unit which generates a frequency signal by subtracting, from a signal obtained by transforming the third acoustic signal into a frequency domain, a signal obtained by transforming the differential signal into a frequency domain, and generates a separated acoustic signal by transforming the generated frequency signal into a time domain.
    Type: Application
    Filed: May 12, 2014
    Publication date: September 4, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Shinichi YOSHIZAWA, Keizo MATSUMOTO, Aiko KAWANAKA