Title :
Evaluation of Audio Watermark System Using Short Detection Time Frame
Author :
Yamada, Takaaki ; Takahashi, Yoshiyasu ; Ebisawa, Ryu ; Sato, Yoshinori ; Susaki, Seiichi
Author_Institution :
Syst. Dev. Lab., Hitachi, Ltd., Hitachi, Japan
Abstract :
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.
Keywords :
audio coding; music; speech synthesis; watermarking; audio watermark system; copyright protection; music; patchwork algorithm; reference signal; short detection time frame; Frequency domain analysis; Laboratories; Multimedia systems; Prototypes; Signal detection; Signal processing; Signal synthesis; Speech synthesis; Water storage; Watermarking; audio watermark; reference signal; synthesized voice;
Conference_Titel :
Intelligent Information Hiding and Multimedia Signal Processing, 2009. IIH-MSP '09. Fifth International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4244-4717-6
Electronic_ISBN :
978-0-7695-3762-7
DOI :
10.1109/IIH-MSP.2009.16
