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Evaluation of Audio Watermark System Using Short Detection Time Frame

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5 Author(s)
Takaaki Yamada ; Syst. Dev. Lab., Hitachi, Ltd., Hitachi, Japan ; Yoshiyasu Takahashi ; Ryu Ebisawa ; Yoshinori Sato
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Assumed applications of copyright protection for music and synthesized voice are discussed. We developed a prototype audio watermark system combining the results of previous studies based on the patchwork algorithm, modifying the amplitude in the time-domain of voiced audio data, and using a reference signal. The results of experimental evaluation show that this our system can detect watermarks in a time frame as short as 2 s.

Published in:

Intelligent Information Hiding and Multimedia Signal Processing, 2009. IIH-MSP '09. Fifth International Conference on

Date of Conference:

12-14 Sept. 2009