Overview
The present invention relates to a system and method of reverse watermarking in audio signals to make the watermark audible in the watermarked signal. On the addition of the watermark, the digital media gets corrupted in such a manner that the HAS (Human auditory system) cannot make any sense from these signals. Using signal processing methods the normalized correlation between the original and the reverse watermarked signal is engineered to a very low value (less than 0.2) which gives a poor signal to noise ratio (SNR), around 2-3 dB. The watermark can be removed using a secret key and once the watermark is removed, the digital signal is completely recovered which is as good as the original (un-watermarked signal).