In this paper, we propose a new method to embed digital
watermarking in audio files, using Discrete Wavelet Transform
(DWT) and the way to extract the watermark data.
The method efficiency is measured using Peak Signal –to-Noise
Ratio (PSNR) , No
rmalized Correlation Coefficient (NC). The
advantage of our method is the robustness against several attacks
and compression.
In this paper, a technique for hiding a message into digital images
(256 gray levels) is proposed. Some tests, on the proposed technique, are
done by applying the technique in hiding messages into some images. From
the recorded results, we can not
e that the proposed watermarking technique
introduces, in many cases, a reasonable way that can be used to hide secret
messages in the digital images.
