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Information Hiding for G.711 Speech Based on Substitution of Least Significant Bits and Estimation of Tolerable Distortion Akinori ITO Shun'ichiro ABE Yoiti SUZUKI Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E93-A No.7 pp.1279-1286 Publication Date: 2010/07/01 Online ISSN: 1745-1337 DOI: 10.1587/transfun.E93.A.1279 Print ISSN: 0916-8508 Type of Manuscript: PAPER Category: Speech and Hearing Keyword: speech coding, data hiding, G.711, ADPCM, LSB substitution, Full Text: PDF(580.8KB)>>
Summary: In this paper, we propose a novel data hiding technique for G.711-coded speech based on the LSB substitution method. The novel feature of the proposed method is that a low-bitrate encoder, G.726 ADPCM, is used as a reference for deciding how many bits can be embedded in a sample. Experiments showed that the method outperformed the simple LSB substitution method and the selective embedding method proposed by Aoki. We achieved 4-kbit/s embedding with almost no subjective degradation of speech quality, and 10 kbit/s while maintaining good quality. | ||||||||||
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