AUDIO PROCESSING DEVICE, REPRODUCING DEVICE, AUDIO PROCESSING METHOD, AND PROGRAM

摘要

The purpose of the present invention is to extract, in real time, a specific instrument sound included in music while reproducing the music. An audio processing unit (12) of the present invention is characterized by comprising: an attack determination unit (42) for determining the attack position of a bass drum sound from a sound signal; a bass drum sound determination unit (43) for determining a sound production interval of the bass drum from the sound signal; and a bass drum sound extraction unit (44) for extracting the bass drum sound by adopting a time change filter to the attack position and an adaptive filter to the sound production interval.