Patents by Inventor Kouhei SUMI

Kouhei SUMI 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: 20190266988
    Abstract: A chord identification method selects from among a plurality of chord identifiers a chord identifier that corresponds to an attribute of a piece of music represented by an audio signal, where the plurality of chord identifiers corresponds to respective ones of a plurality of attributes relating to pieces of music; and identifies a chord for the audio signal by applying a feature amount of the audio signal to the selected chord identifier.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventor: Kouhei SUMI
  • Publication number: 20190251941
    Abstract: A chord estimation apparatus estimates a first chord from an audio signal, and estimates a second chord by inputting the estimated first chord to a trained model that has learned a chord modification tendency.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 15, 2019
    Inventors: Kouhei SUMI, Takuya FUJISHIMA
  • Patent number: 9257111
    Abstract: A music analysis apparatus calculates a similarity index based on an edit distance between a designated sequence of notes designated by a user and a reference sequence of notes of a reference piece of music. The edit distance is calculated by setting a substitution cost between a first note in the designated sequence of notes and a second note in the reference sequence of notes to a first value when one of the first note and the second note corresponds to any of a plurality of notes contained in a tolerance interval containing the other of the first note and the second note, and by setting the substitution cost to a second value different from the first value when one of the first note and the second note does not correspond to any of the plurality of notes contained in the tolerance interval.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: February 9, 2016
    Assignee: Yamaha Corporation
    Inventor: Kouhei Sumi
  • Patent number: 9087500
    Abstract: A note sequence analysis apparatus calculates a similarity index based on similarity between a designated sequence of notes designated by a user and a reference sequence of notes for each of a plurality of reference pieces of music, then selects a reference piece of music from among the plurality of reference pieces of music based on the similarity index calculated for each of the plurality of reference pieces of music, and specifies an evaluation index of the designated sequence of notes based on the similarity index calculated for the selected reference piece of music.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: July 21, 2015
    Assignee: Yamaha Corporation
    Inventor: Kouhei Sumi
  • Patent number: 9024169
    Abstract: A music analysis apparatus has a feature extractor and an analysis processor. The feature extractor generates a time series of feature values from a sequence of notes which is designated as an object of analysis. The analysis processor computes an evaluation index value which indicates a probability that the designated sequence of notes is present in each of a plurality of reference music pieces by applying a probabilistic model to the time series of the feature values generated from the designated sequence of notes. The probabilistic model is generated by machine learning of the plurality of reference music pieces using time series of feature values obtained from the reference music pieces.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: May 5, 2015
    Assignee: Yamaha Corporation
    Inventors: Kouhei Sumi, Takuya Fujishima, Takeshi Kikuchi
  • Publication number: 20140347393
    Abstract: A server apparatus includes a processor, configured to acquire object specifying information for specifying an object in a reality space captured by a first portable terminal, to acquire condition information including an external condition of the first portable terminal, and to acquire content information associated with the object specifying information and the condition information by referring to a database. The database stores, in association with one another, content information representing a content displayed by being superimposed on an object in a reality space captured by a second portable terminal, object information for identifying the object captured by the second portable terminal, and condition information representing a condition for displaying, in the first portable terminal, the content represented by the content information. The processor of the server apparatus is also configured to transmit the content information to the first portable terminal.
    Type: Application
    Filed: May 22, 2014
    Publication date: November 27, 2014
    Applicant: YAMAHA CORPORATION
    Inventors: Hiroki INOUE, Akie HINOKIO, Ryoya KAWAI, Kouhei SUMI
  • Publication number: 20140020546
    Abstract: A note sequence analysis apparatus calculates a similarity index based on similarity between a designated sequence of notes designated by a user and a reference sequence of notes for each of a plurality of reference pieces of music, then selects a reference piece of music from among the plurality of reference pieces of music based on the similarity index calculated for each of the plurality of reference pieces of music, and specifies an evaluation index of the designated sequence of notes based on the similarity index calculated for the selected reference piece of music.
    Type: Application
    Filed: July 17, 2013
    Publication date: January 23, 2014
    Inventor: Kouhei SUMI
  • Publication number: 20130305904
    Abstract: A music analysis apparatus calculates a similarity index based on an edit distance between a designated sequence of notes designated by a user and a reference sequence of notes of a reference piece of music. The edit distance is calculated by setting a substitution cost between a first note in the designated sequence of notes and a second note in the reference sequence of notes to a first value when one of the first note and the second note corresponds to any of a plurality of notes contained in a tolerance interval containing the other of the first note and the second note, and by setting the substitution cost to a second value different from the first value when one of the first note and the second note does not correspond to any of the plurality of notes contained in the tolerance interval.
    Type: Application
    Filed: May 16, 2013
    Publication date: November 21, 2013
    Applicant: Yamaha Corporation
    Inventor: Kouhei SUMI
  • Publication number: 20130192445
    Abstract: A music analysis apparatus has a feature extractor and an analysis processor. The feature extractor generates a time series of feature values from a sequence of notes which is designated as an object of analysis. The analysis processor computes an evaluation index value which indicates a probability that the designated sequence of notes is present in each of a plurality of reference music pieces by applying a probabilistic model to the time series of the feature values generated from the designated sequence of notes. The probabilistic model is generated by machine learning of the plurality of reference music pieces using time series of feature values obtained from the reference music pieces.
    Type: Application
    Filed: July 26, 2012
    Publication date: August 1, 2013
    Applicant: Yamaha Corporation
    Inventors: Kouhei SUMI, Takuya FUJISHIMA, Takeshi KIKUCHI