Patent ID: 8885841
Filing Date: 2014-11-11
Classification: G10H,G10L

Abstract:
1. An audio processing apparatus comprising: an audio signal acquisition unit configured to acquire an audio signal of a musical piece; a feature value extraction unit configured to extract a predetermined type of feature values from the audio signal acquired by the audio signal acquisition unit in time series; a change point detection unit configured to detect a change point in which the amount of change of the feature values extracted in time series by the feature value extraction unit is changed to be greater than a predetermined threshold value; a hook analysis unit configured to analyze a hook place of the audio signal based on the feature values extracted by the feature value extraction unit in block units with the change point detected by the change point detection unit as a boundary; and a hook information output unit configured to output the hook place analyzed by the hook analysis unit as hook information, wherein the change point detection unit includes: