Abstract:
A popular approach employed to embed imperceptible
structures into digital media files in order to hinder
unauthorized copying distribution is digital watermarking.
Digital watermarking adds additional information into an audio
file without influencing quality of our file size. This additional
information can be used for inserting copyright information or a
customer identity into the audio file. In this system, the Discrete
Wavelet Transform(DWT) coefficient block is employed to
embed the watermarking because it is widely used to analyze
non-stationary signals like audio. The watermark detection
process can be performed without using original audio signal.
The experimental results reveals that watermark sequence is
robust to many attacks such as noise adding, cropping, zeroing
and duplicating. This system is implemented by MATLAB.
