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Robust Audio Watermarks in Frequency Domain

Dymarski P., Markiewicz R.

Journal of Telecommunications and Information Technology

2014

nr 2

12--21

In this paper an audio watermarking technique is presented, using log-spectrum, dirty paper codes and LDPC for watermark embedding. This technique may be used as a digital communication channel, transmitting data at about 40 b/s. It may be also applied for hiding a digital signature, e.g., for copyright protection purposes. Robustness of the watermarks against audio signal compression, resampling and transmitting through an acoustic channel is tested.