Shi, "Self-synchronized audio watermark
in DWT domain" in Proceedings of the IEEE International Symposium on Cirquits and Systems (ISCAS '04), vol.
Babaguchi created an audio watermark with a specific signal for each separate "channel" of a soundtrack, broadcast from different loudspeakers in the cinema.
The audio watermarks can identify how far the pirate is from the cinema's speakers, and can even locate the seat on which he or she is sitting.
NCWD used for FSSS audio watermark
detection process is given in Fig.
The Audio Watermark
Emission Standard (A/334) specifies the audio watermark
encoding for use with systems conforming to the ATSC 3.0 family of specifications.
Saying they've been researching Voltair users and non-users, they conclude the audio watermark
confidence monitor and audio processor continues to offer programmers "a significant advantage in the ratings game."
While that is up more than three-fold from last year, it remains a fraction of the paper-based publishing market.<p>Rothman and others point to the music industry, where some artists and record companies and retailers are starting to favor audio watermarks
over DRM, employ P2P networks to give away songs for radio-like promotion, or substituting CD sales with concert tours and merchandise sales.<p>Adobe's Bogaty, the former executive director of IDPF, is skeptical that such a revenue model would work in the book publishing business.