Steganography is a form of data hiding, it is a way for protecting information by embedding data into digital media for the purpose of identification, copyright and sending secret message. Steganography in audio becomes a challenging discipline, since the Human Auditory System (HAS) is highly sensitive. One of the main obstacles of the data hiding in audio is to develop a system which has the quality to include a big amount of data and without affecting the quality of sound. In this research, two approaches of a steganography were designed for hiding secret data in audio media file (MP3). The...