Encoding and decoding methods and apparatus as described. In one example, a method of
embedding auxiliary informa tion into an audio signal includes sampling the audio signal to …

An audio watermarking system conveys information using an audio channel by modulating
an audio signal to produce a modulated signal by embedding additional information into the …

4,703,476 A 10, 1987 Howard 2002/O126872 A1 9, 2002 Brunk et al. 4,739,398 A 4, 1988
Thomas et al. 2003, 000543.0 A1 1/2003 Kolessar 4,783,660 A 1 1/1988 Pierce …

Also, with developments in communication technology, a function of a messenger program
previously only available on a conventional personal computer (PC) is now being provided …

Methods and apparatus for performing variable block length watermarking of media are
disclosed. An example method to encode auxiliary data in audio data comprises selecting a …

Watermarking of audio signals intends to manipulate the audio signal in a way that the
changes in the audio content cannot be recognised by the human auditory system. In order …

A method and system create a data structure from an obfuscated data structure. First, the
system operates on a first data structure whose obfuscation is desired, and creates a data …

Example articles of manufacture and apparatus for producing supplemental information for
audio signature data are disclosed herein. An example apparatus includes memory …

An audio identification system generates a probe audio fingerprint of an audio signal and
determines amount of pitch shifting in the audio signal based on analysis of correlation …

Methods and apparatus to perform audio watermarking and watermark detection and
extraction are disclosed. Example apparatus disclosed herein to embed a code into an …