Audio Watermarking

Store an image in an audio file, this is done by the use of wavelets.

Here is the research paper.

New to Wavelets, here is the best tutorial IMHO

The audio file is in WAV format and the image in BMP, the image file is 32x32 pixels and its also binary

Below shows the output of the program in matlab.

First the wav and bmp files are read, and stored in an array,then wavelet decomposition is done, the image array is embedded in the wavelet coefficients, then the output of the modified wav is plotted and after that the error between the original and watermarked is plotted, during the program execution both the files are played, and there is no audible difference between the two.

embedding

This the output of the extraction program, the watermarked file is plotted, then the original image and then the extracted image.

extracting

Comments:

viraj Patel - Dec 1, 2013

Hello, Can you please send me MATLAB code for this project. Thank you Email ID: [email protected]

Hello, this project is not open source.

Hello, this project is not open source.