AUDIO SIGNAL REPRODUCTION DEVICE AND AUDIO SIGNAL REPRODUCTION METHOD

摘要

An audio signal reproduction device includes: a signal obtainment unit which obtains channel signals including a channel signal representing a direct sound; a reflected sound signal generation unit which, when a first area includes a sound image of the direct sound and a second area is an area other than the first area, generate a reflected sound signal representing a reflected sound, the reflected sound being a sound which reaches the listener after the direct sound is reflected at a predetermined position in the second area; a signal generation unit which generates, from the reflected sound signal, a signal to be outputted to a corresponding channel so that the listener perceives that the reflected sound comes from the predetermined position, the at least one of the channels corresponding to the at least one of the speakers.

主权项

1. An audio signal reproduction device for causing speakers placed around a listener to output sounds, the audio signal reproduction device comprising:
a signal obtainment unit configured to obtain channel signals from channels each corresponding to a different one of the speakers, the channel signals including a channel signal representing a direct sound which reaches the listener from a predetermined direction; a reflected sound signal generation unit configured to, when a first area including a sound image of the direct sound and a second area which is an area other than the first area are two areas divided by a line orthogonal to the predetermined direction and passing through a position of the listener in a plan view of a space where the speakers are placed and the listener hears sound, generate a reflected sound signal representing a reflected sound from the channel signal representing the direct sound, the reflected sound being a sound which reaches the listener after the direct sound is reflected at a predetermined position in the second area; a signal generation unit configured to generate, from the reflected sound signal, a signal to be outputted to at least one of the channels, to cause at least one of the speakers to output a sound so that the listener perceives that the reflected sound comes from the predetermined position; and a signal output unit configured to add each of at least one of the signals generated by the signal generation unit to a corresponding one of the channel signals obtained by the signal obtainment unit, to output an added signal.