Low Rate Hiding in Audio Data Using Phase Domain

This book is aimed to develop a steganography system that hides secret data in audio data by using Fourier transform domain. There are two embedding methods one depends on voiced block while the second depends on audio blocks that successfully passed the integrity retrieved bits tests. two methods are done on the phase component of the cover audio signal that produced after applying Fourier Transform. During the embedding stage, the symmetry attribute of the Fourier domain should be taken into consideration.