Creating the front

摘要

PROBLEM TO BE SOLVED: To make it possible to provide a sound field correction circuit for a surround reproducing device which has a decode circuit composed of a relatively simple circuit and can inexpensively have the same effect as the conventional circuits. ;SOLUTION: This circuit consists of a decode circuit that decodes two channel stereo signals encoded for multi channels surround and obtains multi channel surround signals. The decode circuit is composed of an adder 3 for adding each of encoded two channel stereo signals, a subtractor 5 for subtracting one of the encoded two channel stereo signals from the other, a level adjustment volume 4 for adjusting an output level of the adder 3 and a level adjustment volume 6 for adjusting an output level of the subtractor 5. At this point, an output of the level adjustment volume 4 is made at a central channel signal C and an output of the level adjustment volume 6 is made a surround channel signal S.;COPYRIGHT: (C)1998,JPO