Method to integrate user data into uncompressed audio data

Details Method to integrate user data into uncompressed audio data Method to integrate user data into uncompressed audio data

2003-04-08

2008-03-11

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C700S222000, C700S212000

Reexamination Certificate

active

07343285

ABSTRACT:
Methods for encoding user data into an audio file, and for decoding of the same, are provided. Embodiments include preparing user data for encoding into the audio file including writing user data in blocks of data including header and other information in addition to the user data. An audio file is read and parsed into words of audio data. In each word of audio data, a least significant bit is replaced with one bit of the prepared user data, and the audio data with the encoded user data is saved to a file. Methods of decoding the encoded audio file include extracting the user data from each least significant bit, verifying header information, and re-constructing the user data to a file.

REFERENCES:
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patent: 6363209 (2002-03-01), Sako et al.
patent: 6675148 (2004-01-01), Hardwick
patent: 6768980 (2004-07-01), Meyer et al.
patent: 2003/0012103 (2003-01-01), Sako et al.

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