H - Electricity – 04 – R
Patent
H - Electricity
04
R
363/3, 179/7
H04R 5/04 (2006.01) H04N 5/60 (2006.01) H04H 5/00 (2006.01)
Patent
CA 1192139
ABSTRACT OF THE DISCLOSURE Apparatus for demodulating a multiplexed sound signal comprised of a first sound signal formed by the sum of a first channel signal and a second channel signal, a second sound signal formed by the difference of the first channel signal and the second channel signal, and a third sound signal formed by the sum of a third channel signal and a fourth channel signal, includes a pair of loudspeakers; a first switch device for supplying a monaural sound signal or a stereo sound signal to the loudspeakers; a matrix circuit for producing a first stereo sound signal in a first language or a second stereo sound signal in a second language in response to the second sound signal and the first sound signal or third sound signal, respectively, and for supplying the respective first stereo sound signal or the second stereo sound signal to the first switch device; and a second switch device for selectively supplying the first sound signal or the third sound signal to the matrix circuit or to the first switch device as a first monaural sound signal in the first language or as a second monaural sound signal in the second language, so that the loudspeakers can produce monaural sound in the first language, stereo sound in the first language, monaural sound in the second language or stereo sound in the second
420774
Gowling Lafleur Henderson Llp
Sony Corporation
LandOfFree
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