Three channel sound encoding and decoding system

Details Three channel sound encoding and decoding system Three channel sound encoding and decoding system

H - Electricity

04

R

179/9

H04R 5/04 (2006.01) H04S 3/02 (2006.01)

Patent

CA 1061721

ABSTRACT OF THE DISCLOSURE In a surround-sound encoding system which does not have full circular or square symmetry, a third channel is added to a basic two channel system in such a way that the third channel may be reduced in amplitude or restricted in frequency without substantially affecting important localization criteria. The encoder includes a phase-amplitude matrix such that a decoder having a phase-amplitude matrix which is the inverse of the encoder phase-amplitude matrix is such that the absence of the third channel signals at the input thereof does not affect localization in at least three, preferably six, predetermined directions. - 1 -

274025

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