System for reproducing sound
First Claim
1. A method of producing a composite signal from first and second sound signals, comprising the following steps:
- coding said second sound signal to obtain a coded second sound signal that can be reproduced by sound reproducing means in a manner that is inaudible to the human ear, and combining said first sound signal and said coded second sound signal into a composite sound signal that can be reproduced by sound reproducing means in such a manner that said first sound signal is audible to the human ear and said second sound signal is inaudible to the human ear.
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Accused Products
Abstract
Devices and method for reproducing sound and transmitting a first sound signal and a second sound signal includes a producer having a means for coding the second sound signal, and a means for combining the first sound signal and the coded second sound signal into a composite sound signal that can be reproduced by reproducing means in such a manner that the second sound signal is inaudible to the human ear. A transmitter is provided including a first reproducing means, and a receiver having a means for receiving the composite signal, a means for extracting the coded second sound signal from the composite signal, a decoding means, and a second reproducing means.
14 Citations
17 Claims
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1. A method of producing a composite signal from first and second sound signals, comprising the following steps:
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coding said second sound signal to obtain a coded second sound signal that can be reproduced by sound reproducing means in a manner that is inaudible to the human ear, and combining said first sound signal and said coded second sound signal into a composite sound signal that can be reproduced by sound reproducing means in such a manner that said first sound signal is audible to the human ear and said second sound signal is inaudible to the human ear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification