发明名称 |
Method for watermarking data |
摘要 |
A method for inserting a watermark into an audio signal comprising substituting a noise-like signal portion with a replacement noise-like signal portion, and the replacement noise-like signal portion is modulated with watermark data. In a preferred embodiment Perceptual Noise Substitution is used to locate those portions of the audio signal which are noise-like and which may be replaced by synthetic noise modulated with watermark data. Advantageously the inventive method results in a signal having a synthetic noise signal portion which is modulated by watermark data but which is perceived merely as a noisy signal portion and not as watermark data carrying. Furthermore, watermarks incorporated by the inventive method may be adapted to be robust to various audio compression schemes.
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申请公布号 |
US6975992(B2) |
申请公布日期 |
2005.12.13 |
申请号 |
US20020201958 |
申请日期 |
2002.07.25 |
申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
TUCKER ROGER CECIL FERRY;BRITTAN PAUL ST JOHN |
分类号 |
H04H20/31;(IPC1-7):G10L21/00;G06K9/00;H04L9/00 |
主分类号 |
H04H20/31 |
代理机构 |
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主权项 |
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地址 |
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