Method for the compatible transmission and/or storage and decodi

Details Method for the compatible transmission and/or storage and decodi Method for the compatible transmission and/or storage and decodi

1993-12-17

1998-01-27

Lee, Thomas D.

Electrical audio signal processing systems and devices

Including amplitude or volume control

H03G 300

Patent

active

057129207

ABSTRACT:
A method of simultaneously transmitting and decoding an audio signal and an auxiliary signal which is inseparable from the audio signal includes the step of allocating a loudness level to the audio signal which is higher than the level of the auxiliary signal whereby the auxiliary signal is inaudible during playback of the audio signal and does not deteriorate the playback of the audio signal. The audio signal is encoded by dividing it into a number of frequency bands. The auxiliary signal is transmitted in one of the frequency bands at a level much lower than the level of the audio signal.

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