Design and Implementation of Synchronized Audio-to-Audio Steganography Scheme

Steganography technologies developed to protect multimedia content make great progress in recent years. This paper proposes a synchronized steganography system for acoustic data. The synchronous aspect means that the secret data is to be recorded and steganographically embedded and subsequently sent or broadcasted to multiple receivers. However, only the trusted receiver can extract the secret data using a secret key shared with the sender in advance. Acoustic data is transmitted through socket communication. Main processes in this scheme include PCM Setting, Embedding Process, and Robustness Analysis. Algorithm, mainly focuses on masking calculation towards cover bit stream in each sampling point makes it possible that secret bit stream can be interspersed into significant bit locations in cover without drawing suspicion even though some certain performance degradation is caused.