Robust Audio Watermarks in Frequency Domain
DOI:
https://doi.org/10.26636/jtit.2014.2.1017Keywords:
annotation watermarking, audio watermarking, digital signature, dirty paper codes, LDPCAbstract
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.
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