Robust Audio Watermarks in Frequency Domain

• Published in: Journal of Telecommunications and Information Technology
• Main Authors: Przemysław Dymarski, Robert Markiewicz
• Format: Article
• Language: English
• Published: National Institute of Telecommunications 2014-06-01
• Subjects: annotation watermarking; audio watermarking; digital signature; dirty paper codes; LDPC
• Online Access: https://jtit.pl/jtit/article/view/1017
• ISSN: 1509-4553; 1899-8852

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. In this paper an audio watermarking technique ispresented, using log-spectrum, dirty paper codes and LDPCfor watermark embedding. This technique may be used asa digital communication channel, transmitting data at about40 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 andtransmitting through an acoustic channel is tested.