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Digital watermark embedding / extraction method for the protection and copy protection of digital audio content copyright and apparatus using the same
Digital watermark embedding / extraction method for the protection and copy protection of digital audio content copyright and apparatus using the same
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机译：用于数字音频内容版权的保护和复制保护的数字水印嵌入/提取方法以及使用该方法的装置
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摘要
(57) Abstract The model which uses the smallest audible limit of the digital audio contents for the digital audio contents the electronic spacing is imbedded in, is formed, the false random number sequence is done the mask, the electronic spacing which is imbedded to the digital audio contents is formed. In order to extract the electronic spacing which is imbedded to the digital audio contents, the auditory psychological model which possesses the smallest audible limit which is based on the frequency characteristic which is formed from the digital audio contents is formed, the electronic spacing is formed from the false random number sequence. After forming the electronic spacing, length of the electronic spacing is adjusted between the contiguity digital audio contents by the relationship of signal processing. It is possible to inspect the presence of the pad of the electronic spacing by measuring the correlation with the electronic spacing and the digital audio contents.
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