Sound image reproduction device, sound image reproduction method and sound image reproduction program

摘要

We provide a sound image reproduction device, a sound image reproduction method, and a sound image reproduction program that can support a monaural sound source and give directivity to a virtual sound source in space. In the acoustic signal processing device (sound image reproduction device) 1 that generates virtual sound sources in space using a plurality of speakers arranged in a straight line, the acoustic signal processing device 1 generates a plurality of virtual sound sources in a circular shape. The focus position determination unit 12 that determines the position of each virtual sound source and the drive function for driving the speaker used to generate the virtual sound source at the position of each virtual sound source have different weights for a part of each virtual sound source. The filter coefficient determination unit 13 that calculates the impulse response vector for each speaker by inverse Fourier transforming the drive function for each speaker with the above, and the impulse response vector for each speaker for one input acoustic signal. It includes a convolution calculation unit 14 that folds each and outputs each acoustic signal to a plurality of speakers.