Central Research Laboratories (CRL) (W)


CRL's Audio Watermarking is a technique for embedding data codes within audio in such a way that the perceived quality of the audio is undisturbed. In a music application, it can be used for persistent identification in the following ways:

  • An ID code can be added during production transaction.

  • Tracking codes identifying the purchaser can be added when the music is sold or played.

  • Access control codes can be added that enable a user to play or copy the music; this can also be used to prevent a user from playing or copying music.

CRL's Audio Watermarking technology has the benefits of audibility, high payload, and robustness. The robustness features include:

  • Analog-to-digital and digital-to-analog conversion

  • Compression (e.g., MP3, AAC)

  • Radio and TV broadcast (AM, FM)

More information can be found at www.crl.co.uk.




Investigator's Guide to Steganography
Investigators Guide to Steganography
ISBN: 0849324335
EAN: 2147483647
Year: 2003
Pages: 220

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