Steganography in digital signal encoding

摘要

The method involves providing data information, particularly voice information, selecting steganographic information, generating a code word from a code book provided by the signal encoder on the basis of the code elements. The code word generated within the scope of a transmission standard associated with the code book. The data information is encoded into signal information containing the code word. The code word generated having an additional feature that is calculated on the basis of the code elements forming the code word, and represents the steganographic information.