Application of Energy Efficient Watermark on Audio Signal for Authentication

This paper presents a watermarking scheme, which is robust and can sustain almost all attack on audio file. In the proposed watermarking scheme use a robust watermark which can resist all attacks. The feature of the proposed scheme is to resist minimum mean square error (MMSE) estimation attack. In audio samples an energy efficient watermark is embedded which satisfies the power spectrum condition (PSC). In PSC compliant technique watermark´s power spectrum is directly proportional to that of the original signal. The watermark satisfying PSC are proven to be most robust. Energy efficient watermarking scheme resist MMSE as much as possible. Experiments justify that the proposed scheme is inaudible and robust against various attack such as noise adding, resampling, requantization, random cropping and MP3 compression.