Invisible Digital Audio Watermarking using DWT-DCT based Transform

Abstract

Watermarking is a process of inserting a secret message into a digital data for copyright protection. The digital data may be image, audio, video etc. Here, we have done invisible digital audio watermarking using a gray scale image as watermark. To provide security of original audio and for ownership protection such invisible digital watermarking technique is used. Here, the audio watermarking is based on DWT-DCT based Transform. To improve the performance of the audio the cyclic code is used as error correcting code and the Arnold Transform is also used. Hence, when the audio signal is copied then the hidden information is also carried in the copy. The performance of watermarked audio is calculated using Bit Error Rate (BER).