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US 3,941,931 AGranted
Audio signal mixing system
AssigneeSony Corporation
InventorYoshio Osakabe
Life of this patent
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Abstract
An audio signal mixing system having left and right channels to transmit stereophonic left and right signals and each containing monaural signals and having left and right loudspeakers to reproduce the stereophonic signals, which includes a circuit for eliminating the monaural signal in one of the left and right channels, and also includes a mixing circuit for mixing a signal derived from a microphone in the other channel with the stereophonic signals, so that two different kinds of monaural signals as well as the stereophonic signals are reproduced by each loudspeaker.
Claims9
An audio signal mixing system comprising:
- a. left and right channels for transmitting stereophonic left and right signals L and R each, respectively, containing a monaural signal;
- b. a first circuit for eliminating said monaural signal contained in either one of said left and right signals L and R;
- and
- c. a second circuit supplied with an additional signal and mixing it with either one of said left and right signals L and R, whereby said either one of said left and right signals L and R and said additional signal are passed by one of said left and right channels, and the other one of the L and R signals and the monaural signal are passed by the other channel.
1 more element
Dependencies are inferred from the claim text.