Schur decomposition and dither modulation: an efficient and robust audio watermarking technique

To protect the copyright for providing ownership in audio signal watermarking techniques are requisite. In this paper, a new robust audio watermarking algorithm is proposed, which is based on Schur decomposition and Dither modulation. In the Schur decomposition and Dither modulation based technique, watermark embedding is done using Dither modulation quantization which has a good performance in terms of imperceptibility, robustness and speed etc. Schur decomposition and Dither modulation is a blind audio watermarking technique which is robust against various attacks such as Additive White Gaussian Noise (AWGN), cropping, echoing, low pass filtering, requantization, resampling etc. The proposed technique has shown efficient and stable performance against various attacks and it is computationally faster.