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Apparatus for analyzing musical performance, performance analysis method, automatic playback method, and automatic player system

  • US 10,580,393 B2
  • Filed: 01/18/2019
  • Issued: 03/03/2020
  • Est. Priority Date: 07/22/2016
  • Status: Active Grant
First Claim
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1. An apparatus for analyzing performance of a piece of music, the apparatus comprising:

  • a controller that is configured todetect a cue gesture of a performer who plays the piece of music;

    calculate a distribution of likelihood of observation by analyzing an audio signal representative of a sound of the piece of music being played, wherein the likelihood of observation is an index showing a correspondence probability of a time point within the piece of music to a playback position; and

    estimate the playback position depending on the distribution of the likelihood of observation, whereincalculating the distribution of the likelihood of observation includes decreasing the likelihood of observation during a period prior to a reference point specified on a time axis for the piece of music in a case where the cue gesture is detected.

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