Patents by Inventor Tetsunori Kobayashi

Tetsunori Kobayashi 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).

  • Publication number: 20230386445
    Abstract: A terminal includes: a scenario information reproduction means that sequentially reproduces units of scenario information based on reproduction instruction information, the scenario information including the units which are obtained by dividing a document into the units which are predetermined, the reproduction instruction information being set for each of the units in the scenario information; a reaction acquisition means that obtains a reaction of a user to a reproduced content; a reaction analysis means that analyzes a content of the reaction in accordance with the content of the reaction acquired and a timing of the reaction to the reproduced content; and a unit selection means that selects units for the reaction from the units of the scenario information in accordance with an analysis result, the scenario information reproduction means sequentially reproducing the units selected for the reaction.
    Type: Application
    Filed: April 20, 2023
    Publication date: November 30, 2023
    Inventors: Hiroaki TAKATSU, Tetsunori KOBAYASHI, Shinya FUJIE, Yoichi MATSUYAMA
  • Patent number: 8422694
    Abstract: In a source sound separator, first and second target sound predominant spectra are generated respectively by first and second processing operations for linear combination for emphasizing the target sound, using received sound signals of two microphones arrayed at a distance from each other. A target sound suppressed spectrum is generated by processing for linear combination for suppression of the target sound, using the two received sound signals. Further, a phase signal containing a larger amount of signal components of the target sound and exhibiting directivity in the direction of the target sound is generated by processing of linear combination, using the two received sound signals. The target sound and the interfering sound are separated from each other using the first and second target sound predominant spectra, the target sound suppressed spectrum, and the phase signal.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: April 16, 2013
    Assignees: Oki Electric Industry Co., Ltd., Waseda University
    Inventors: Makoto Morito, Takashi Yazu, Kei Yamada, Tetsunori Kobayashi, Kenzo Akagiri, Tetsuji Ogawa
  • Publication number: 20120308039
    Abstract: A sound source separation system separates a target sound and a disturbance sound coming from an arbitrary direction other than the direction the target sound comes from. The system includes different-directional-signal-group generators and a sensitive region formation unit. The generators each generate two or more combinations of spectra of signals each of which has a different directivity, using received sound signals of microphones. The sensitive region formation unit determines, for each frequency band, whether or not a relationship between powers of the spectra in each combination simultaneously satisfies conditions each defined for each combination, using two or more combinations of the spectra of the signals generated by the respective different-directional-signal-group generators, and performs multidimensional band selection of assigning power of a spectrum selected beforehand to a spectrum of the target sound to be separated, for a frequency band where the conditions are simultaneously satisfied.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 6, 2012
    Applicant: WASEDA UNIVERSITY
    Inventors: Tetsunori KOBAYASHI, Kenzo AKAGIRI, Satoshi KANBA
  • Patent number: 8213633
    Abstract: The invention provides a sound source separation system, a sound source separation method, and an acoustic signal acquisition device which can precisely separate a target sound and a disturbance sound coming from an arbitrary direction, and which ensures miniaturization of a device.
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: July 3, 2012
    Assignee: Waseda University
    Inventors: Tetsunori Kobayashi, Kenzo Akagiri, Satoshi Kanba
  • Publication number: 20110142252
    Abstract: In a source sound separator, first and second target sound predominant spectra are generated respectively by first and second processing operations for linear combination for emphasizing the target sound, using received sound signals of two microphones arrayed at a distance from each other. A target sound suppressed spectrum is generated by processing for linear combination for suppression of the target sound, using the two received sound signals. Further, a phase signal containing a larger amount of signal components of the target sound and exhibiting directivity in the direction of the target sound is generated by processing of linear combination, using the two received sound signals. The target sound and the interfering sound are separated from each other using the first and second target sound predominant spectra, the target sound suppressed spectrum, and the phase signal.
    Type: Application
    Filed: December 10, 2010
    Publication date: June 16, 2011
    Applicants: OKI ELECTRIC INDUSTRY CO., LTD., WASEDA UNIVERSITY
    Inventors: Makoto Morito, Takashi Yazu, Kei Yamada, Tetsunori Kobayashi, Kenzo Akagiri, Tetsuji Ogawa
  • Publication number: 20090323977
    Abstract: The invention provides a sound source separation system, a sound source separation method, and an acoustic signal acquisition device which can precisely separate a target sound and a disturbance sound coming from an arbitrary direction, and which ensures miniaturization of a device.
    Type: Application
    Filed: December 7, 2005
    Publication date: December 31, 2009
    Applicant: WASEDA UNIVERSITY
    Inventors: Tetsunori Kobayashi, Kenzo Akagiri, Satoshi Kanba