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- Title
A Novel AMR-WB Speech Steganography Based on Diameter-Neighbor Codebook Partition.
- Authors
He, Junhui; Chen, Junxi; Xiao, Shichang; Tang, Shaohua; Huang, Xiaoyu
- Abstract
Steganography is a means of covert communication without revealing the occurrence and the real purpose of communication. The adaptive multirate wideband (AMR-WB) is a widely adapted format in mobile handsets and is also the recommended speech codec for VoLTE. In this paper, a novel AMR-WB speech steganography is proposed based on diameter-neighbor codebook partition algorithm. Different embedding capacity may be achieved by adjusting the iterative parameters during codebook division. The experimental results prove that the presented AMR-WB steganography may provide higher and flexible embedding capacity without inducing perceptible distortion compared with the state-of-the-art methods. With 48 iterations of cluster merging, twice the embedding capacity of complementary-neighbor-vertices-based embedding method may be obtained with a decrease of only around 2% in speech quality and much the same undetectability. Moreover, both the quality of stego speech and the security regarding statistical steganalysis are better than the recent speech steganography based on neighbor-index-division codebook partition.
- Subjects
CRYPTOGRAPHY; SPEECH coding; SPEECH codecs; CRYPTOGRAPHY research; CRYPTOGRAPHIC equipment
- Publication
Security & Communication Networks, 2018, p1
- ISSN
1939-0114
- Publication type
Article
- DOI
10.1155/2018/7080673