by International Business Machines Corporation. Copying in printed form for private use is permitted without payment of royalty provided that (1) each reproduction is done without alteration and (2) the Journal reference and IBM copyright notice are included on the first page. The title and abstract, but no other portions, of this paper may be copied or… (More)
Homomorphic signal-processing techniques are used to place information imperceivably into audio data streams by the introduction of synthetic resonances in the form of closely-spaced echoes. These echoes can be used to place digital identiication tags directly into an audio signal with minimal objectionable degradation of the original signal.
This paper presents a novel steganographic scheme based on nonlinear Preparate codes that can achieve better performance for application in steganography than simple linear codes currently in use. The idea of this paper is to use the Z4-linearity of Preparata non-linear codes for the construction of a new steganographic scheme and to show that quaternary… (More)