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Robust hashing for multimedia authentication is an emerging research area. A novel key-dependent robust speech hashing based on speech production model is proposed in this letter. Robust hash is calculated based on linear spectrum frequencies (LSFs) which model the vocal tract. The correlation between LSFs is decoupled by discrete cosine transformation (DCT). A randomization scheme controlled by a...
Reversible watermarking for compressed speech is proposed. Two properties of parameter-based speech coding bitstream are pointed out. Based on the properties, unimportant parameters are further compressed by entropy coding and concatenated with the watermark payload. The proposed scheme is demonstrated with G.729 speech coding and can be applied to other speech coding standards. Experiment results...
A speech perceptual hash algorithm in compression domain is proposed in this paper. Speech coded at very low bitrate requires hash algorithm with high compactness and robustness. LSF could model the changing shape of the speaker vocal tract and is the intermediate result of partial decoding. They are used to generate hash value. The proposed method satisfies the robustness and discrimination requirement...
This paper proposes a method to extract speech features for content integrity verification of G. 729 coded speech, which could minimize the computation cost and reduce the sizes of the features. Experiments results show that the method is robust to common operations in speech transmission such as recompression, volume changing, re-sampling and transcoding, and also does well in tamper detection for...
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