Encoding multiple messages in audio data and detecting same

Details Encoding multiple messages in audio data and detecting same Encoding multiple messages in audio data and detecting same

2005-01-18

2005-01-18

Abebe, Daniel (Department: 2655)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C341S052000

Reexamination Certificate

active

06845360

ABSTRACT:
Systems and methods are provided for encoding and decoding multiple messages in audio data. The messages each comprise a sequence of message symbols each comprising a combination of substantially single-frequency components. At least some of the message symbols in one of the messages coexist with at least some of the symbols of another one of the messages along a time base of the audio data.

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