Audio Watermarking Based on Mean Quantization in Cepstrum Domain

A novel audio watermarking algorithm is proposed in this paper for audio copyright protection. The method is based on cepstrum domain transform. This algorithm embeds the watermark data into original audio signal using mean quantization of cepstrum coefficients. Experimental results shows that our audio watermarking scheme is not only imperceptible, but also robust against various common signal processing attacks such as noise adding, re-sampling, low-pass filtering, re-quantization, MP3 compression and cropping. In addition, the algorithm can extract the watermark without the help of original audio signal, and its performance is better than cepstrum domain audio watermarking scheme based on statistical mean manipulation.

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