| 英文摘要 |
Polarity inversion based speech watermarking scheme hide data in speech by modi¯cation of the speech polarity. This paper build a statistical model of the polarity detection problem, based on this model, the original polarity detection scheme and the optimal detection scheme are analyzed and compared. The theoretical analysis results are validated by Monte Carlo simulation, the optimal polarity detector shows signi¯cant performance gain compared with the original polarity detection algorithm. |
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