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1. (WO2017154928) AUDIO SIGNAL PROCESSING METHOD AND AUDIO SIGNAL PROCESSING DEVICE

Pub. No.:    WO/2017/154928    International Application No.:    PCT/JP2017/009074
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Mar 08 00:59:59 CET 2017
IPC: G10G 3/04
G10L 25/27
G10L 25/51
G10L 25/54
Applicants: YAMAHA CORPORATION
ヤマハ株式会社
Inventors: SASAI Dan
篠井 暖
Title: AUDIO SIGNAL PROCESSING METHOD AND AUDIO SIGNAL PROCESSING DEVICE
Abstract:
An audio signal processing method according to an embodiment of the present invention comprises: a step of obtaining an input audio signal; a step of obtaining the number of beats per unit time from the input audio signal; a step of normalizing the input audio signal using the number of beats per unit time; a step of calculating a beat spectrum of the normalized input audio signal; and a step of calculating a rhythm similarity degree between the beat spectrum of the normalized input audio signal and a normalized beat spectrum calculated from a reference audio signal.