Audio signal processing apparatus

摘要

An audio signal processing apparatus (1) capable of changing the tempo of an input audio signal, comprises magnification designator (21-26) capable of designating a plurality of different magnifications and a device (A1) capable of automatically detecting a BPM (Beats Per Minute) or a beat period of the input audio signal, changing said BPM or said beat period in accordance with a magnification designated by the magnification designator, and changing the tempo of the audio signal in accordance with the changed BPM and the changed beat period.