The news reporters obtained a quote from the research, "This article presents an innovative method for watermark embedding in the time-frequency domain using a sparse multicarrier approach. The proposed system involves a watermarked audio signal that is played back by a loudspeaker and picked up by a microphone mounted on a mobile device. The system is built to be used in an enclosed environment such as a room and is therefore designed to be robust against various impairments such as reverberation, microphone self-noise, and movement."
According to the news reporters, the research concluded: "The system robustness is confirmed by performance evaluations, whereas its inaudibility is verified by subjective listening tests."
For more information on this research see: A Robust Audio Watermarking System for Acoustic Channels.
Our news correspondents report that additional information may be obtained by contacting T. Bliem, Fraunhofer Inst Integrated Circuits IIS,
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