AUDIO SIGNAL PLAYBACK DEVICE, METHOD, AND RECORDING MEDIUM

Even in a case where an audio signal is played back with a low cost-restricted speaker group using a wavefront synthesis playback type, it is possible to faithfully recreate a sound image from any listening position, and to prevent sound in a low frequency band from falling short of sound pressure. An audio signal playback device includes a conversion unit that performs discrete Fourier transform on each of 2 channel audio signals obtained from a multi-channel input audio signal; a correlation signal extraction unit that, disregarding a direct current component, extracts a correlation signal (164) from the 2 channel audio signals (161) and (162) that result from the discrete Fourier transform, and additionally pulls a correlation signal in a lower frequency than a predetermined frequency flow out of the correlation signal (164); and an output unit that, for example, allocates the pulled-out correlation signal to a virtual sound source (167) in such a manner that a time difference in a sound output between adjacent speakers that are output destinations falls within a range of 2 x/c (here, x is set to be a distance between the adjacent speakers, and c is a sound speed), and outputs a result of the allocation from one portion or all portions of the speaker group.