Image as a watermark In Digital Audio Using Arnold Transform & DWT

The aim is to get large Capacity embedding watermark in Audio & to improve strength of audio watermarking technique to intelligent attacks and simple signal exploitation attacks in existing digital Audio watermarking, this paper presented a large capacity digital audio watermarking using 24 bit true colour image used as watermark. The image is decomposed into R, G, B Components & Arnold transform is applied to Scramble the Watermark image & DCT for image compression. The compressed scrambled watermark image is prepared, and then a Audio signal is to be selected & sampled with M sample. An audio signal is segmented in small segments. In our proposed work the watermark is embedded in each segment. Three level DWT is applied for each audio segments for calculating embedding strength. The watermark signal is going to be tested for various tests such as similarity, imperceptibi lity, Robustness, Security. Thus the aim is to get large Capacity embedding watermark in Audio.