Steganography may be a technique for hiding data in a host signal. The host signal may be a still image, speech or video and therefore the message signal that's hidden within the host signal can be a text, image or an audio signal. For data hiding in host, discrete wavelate transform (DWT) is used. Perfect audio Steganography technique aim at embedding data in an imperceptible, robust and secure way and so extracting it by authorized people. Hence, up to this point the main challenge in digital audio steganography is to get robust high capacity steganography systems. Leaning towards designing a system that ensures high capacity or robustness and security of embedded data has LED to great diversity within the existing steganography techniques