Patent ID: 6956954

Claim:
A processing method of a front left channel signal, a front center channel signal, a front right channel signal, and a pair of monophonic surround signals for virtually creating a surround left sound source and a surround right sound source to a first listener and a second listener through a front left speaker, a front center speaker, and a front right speaker, comprising the steps of: placing the front left speaker and the front center speaker respectively to front left side and front right side of the first listener; placing the front center speaker and the front right speaker respectively to a front left side and a front right side of the second listener; arranging the front left speaker and the front right speaker symmetrically with respect to a central axis extending from the front center speaker and to the middle point between the first listener and the second listener, while arranging the first listener and the second listener symmetrically with respect to the central axis; performing virtual localization processing to the pair of monophonic surround signals to produce a first and a second virtual localization output for creating a surround left source and surround right source; supplying the front left channel signal, the front center channel signal and the front right channel signal respectively to the front left speaker, the front center speaker and the front right speaker; and supplying the first virtual localization output to the front left speaker and supplying the first virtual localization output to the front right speaker and supplying the second virtual localization output to the center so as to create the surround left sound source and the surround right sound source to both the first listener and the second listener.