Patents by Inventor Toshihisa Sabi

Toshihisa Sabi 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: 20220262331
    Abstract: The following abstract will replace all prior versions of the abstract in the A music piece analyzer includes: a key candidate determiner configured to analyze music data to determine a plurality of key candidates; and a key selector configured to extract each one of the plurality of key candidates, detect keys corresponding to related keys from among remaining ones of the plurality of key candidates supposing that the extracted one of the plurality of key candidates is a main key, on each extracted one of the plurality of key candidates, calculate a related key score in accordance with the number of the keys corresponding to the related keys, and select a key of a music piece in accordance with the related key score from among the plurality of key candidates.
    Type: Application
    Filed: June 17, 2019
    Publication date: August 18, 2022
    Inventors: Shiro Suzuki, Toshihisa Sabi
  • Patent number: 11205407
    Abstract: A music piece analyzer includes: a beat interval acquiring unit configured to acquire a beat interval in music piece data; a candidate detector configured to detect sounding positions where a change amount for sounding is equal to or more than a predetermined threshold in the music piece data, as candidates for sounding positions of a snare drum; and a sounding position determination unit configured to determine that the candidates for the sounding positions at a two-beat interval acquired by the beat interval acquiring unit in the music piece data are the sounding positions of the snare drum, among the candidates for the sounding positions of the snare drum.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: December 21, 2021
    Assignee: ALPHATHETA CORPORATION
    Inventors: Hajime Yoshino, Toshihisa Sabi
  • Patent number: 11176915
    Abstract: A music piece analyzer includes: a beat-position-acquiring-unit configured to detect beat positions in music piece data; a snare drum detector configured to detect sounding positions of a snare drum in the music piece data; a bass drum detector configured to detect sounding positions of a bass drum in, the music piece data; a one-beat-shift-determination-unit configured to determine whether a bar beginning of the music piece data is shifted by one beat based upon the sounding positions of the snare drum detected by the snare drum detector; a two-beat-shift-determination-unit configured to determine whether the bar beginning of the music piece data is shifted by two beats on a basis of the sounding positions of the bass drum detected by the bass drum detector; and a bar-beginning-setting-unit configured to set the bar beginning of the music piece data on a basis of results determined by the one-beat-shift-determination-unit and the two-beat-shift-determination-unit.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: November 16, 2021
    Assignee: ALPHATHETA CORPORATION
    Inventors: Hajime Yoshino, Kei Sakagami, Toshihisa Sabi
  • Publication number: 20200357368
    Abstract: A music piece analyzer includes: a beat-position-acquiring-unit configured to detect beat positions in music piece data; a snare drum detector configured to detect sounding positions of a snare drum in the music piece data; a bass drum detector configured to detect sounding positions of a bass drum in the music piece data; a one-beat-shift-determination-unit configured to determine whether a bar beginning of the music piece data is shifted by one beat based upon the sounding positions of the snare drum detected by the snare drum detector; a two-beat-shift-determination-unit configured to determine whether the bar beginning of the music piece data is shifted by two beats on a basis of the sounding positions of the bass drum detected by the bass drum detector; and a bar-beginning-setting-unit configured to set the bar beginning of the music piece data on a basis of results determined by the one-beat-shift-determination-unit and the two-beat-shift-determination-unit.
    Type: Application
    Filed: August 29, 2017
    Publication date: November 12, 2020
    Inventors: Hajime Yoshino, Kei Sakagami, Toshihisa Sabi
  • Publication number: 20200193947
    Abstract: A music piece analyzer includes: a beat interval acquiring unit configured to acquire a beat interval in music piece data; a candidate detector configured to detect sounding positions where a change amount for sounding is equal to or more than a predetermined threshold in the music piece data, as candidates for sounding positions of a snare drum; and a sounding position determination unit configured to determine that the candidates for the sounding positions at a two-beat interval acquired by the beat interval acquiring unit in the music piece data are the sounding positions of the snare drum, among the candidates for the sounding positions of the snare drum.
    Type: Application
    Filed: August 29, 2017
    Publication date: June 18, 2020
    Inventors: Hajime Yoshino, Toshihisa Sabi