Digital Watermarking of MP3 File Using Psychoacoustic Auditory Model and FH SS/MFSK

A new technique for digital watermarking MP3 file is presented. A Psychoacoustic auditory model is applied to shape and insert the watermark waveform into the MP3 file. The strength of frequency hopping spread spectrum and multiple frequency-shift keying modulation is used to generate a robust digital watermark. Watermark recovery is performed in the absence of the original file. According to experimental tests, the proposed method not only shows a good resistance to different kinds of attacks either intentional or unintentional but also retains the perceptual quality of MP3 file.