An Improved Phase Coding-Based Watermarking Algorithm for Speech Perceptual Hashing Authentication

Speech perceptual hashing authentication provides an efficient way for security authentication of speech content. To solve the problem of perceptual hash value efficient and secure transmission, we present a speech watermarking algorithm, which is based on improved phase coding by bipolar quantization and suitable for speech perceptual hashing authentication. This algorithm embeds the perceptual hash sequence which is regarded as the watermark in the speech signal. At the transmitter, the algorithm embeds watermarks in embedding positions scrambled by Logistic mapping using improved phase coding by bipolar quantization and reconstructs the speech signal. At the receiver, the algorithm extracts watermarks based on quantitative identification after embedding positions determination. Experimental results show that the proposed blind watermarking scheme has good transparency, robustness and security, and can meet the requirements of speech perceptual hashing authentication.