Patent ID: 7082201

Claim:
A three-dimensional sound reproduction method, comprising: providing two-channel first nonlocalization audio signals defining sound images which are to be respectively localized on left and right sides of a listener by one of reproducing from a medium and receiving from an outside source, the two-channel first nonlocalization audio signals to which a center-channel audio signal defining a sound image to be localized at a center is commonly added, and the two-channel first nonlocalization audio signals to which nonlocalization audio signals separated in phase by 180 degrees from each other are respectively added; conducting filtering processes respectively corresponding to transfer functions of paths from a virtual point in a three-dimensional acoustic space to left and right ears of the listener on the two-channel first nonlocalization audio signals, to generate two-channel second audio signals defining a sound image to be localized at the virtual point; and conducting a crosstalk canceling process on the two-channel second audio signals to generate two-channel third audio signals, so that, when the two-channel third audio signals are respectively generated by two loudspeakers positioned in front of the listener, the two-channel third audio signals reach the left and right ears of the listener without producing crosstalk.