Secure AAC steganography scheme based on multi-view statistical distortion (SofMvD)

Advanced Audio Coding (AAC) is currently the most widely used audio compression standard in Internet applications. In this paper, a large capacity secure steganography algorithm based on the compression parameters of AAC QMDCT is proposed. In order to improve the statistical security and the imperceptibility of steganography. Based on multi-view statistical distortion, which combines the statistical distribution of Huffman codewords, QMDCT's intra-frame and inter-frame statistical correlation, and the frequency perceptual masking in the psychoacoustic model, this paper presents a secure AAC steganography scheme SofMvD based on STCs. In the experimental results, the maximum embedding capacity of the proposed scheme is about 12 kbps. Compared with the existing methods, this method can improve steganalysis's ability to 8%−30% and improve the auditory concealment of steganalysis without changing the embedding capacity. This scheme can also be extended to MP3. © 2021