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Capacity Adaptive Synchronized Acoustic Steganography Scheme

A new steganography scheme with capacity variability and synchronization is proposed for secure transmission of acoustic data . In this scheme, the sender records acoustic data, converts it into PCM data, embeds synchronous fix-sized divided data , interleaves and transmits the secret data to generate stego data, and the receiver extracts the secret data all in real-time. Synchronization ensures scalability of privacy protection and secures live broadcasts. The embedding capacity is adaptive to the features of the human auditory system (HAS). Depending on the imperceptibly of the scrambling bits of cover data, the embedding positions can be arbitrarily assigned according to the PCM settings and embedding algorithm. A socket model is used to transmit the stego data. Objective (signal to noise ratio) measurements and subjective evaluations demonstrate the effectiveness of the scheme.