Patent ID: 11877128
Assignee: YAMAHA CORPORATION
Field: Other consumer goods (Other fields)
Classification: CPC H  G | IPC G  H

Claim 19:
20. A non-transitory computer readable medium storing a program for causing a computer to execute:
obtaining an audio signal having (i) an onset, which is a rising point of a waveform of a musical note included in the audio signal, (ii) an onset peak, which is a maximum level of the waveform of the musical note, (iii) an attack section, which is a first portion of the waveform of the musical note from the onset to the onset peak, and (iv) a non-attack section, which is a second portion of the waveform of the musical note occurring after the onset peak;
detecting one or more level values in each of a plurality of attack sections included in the audio signal including the plurality of attack sections and a plurality of non-attack sections different from the plurality of attack sections; and
generating a histogram of the detected level values in each of the plurality of attack sections, the generated histogram excluding level values of the plurality of non-attack sections.