Title :
Perceptually hidden data transmission over audio signals
Author :
Prandoni, Paolo ; Vetterli, Martin
Author_Institution :
Ecole Polytech. Fed. de Lausanne, Switzerland
Abstract :
A data transmission framework is proposed to embed digital data into an audio signal in a perceptually undetectable or almost undetectable way. The resulting signal can be reproduced as is with no loss of acoustic quality; the embedded data can be exactly retrieved at the decoder. The transmission process exploits the perceptual redundancy of the audio signal to conceal the acoustic impact of the embedded data; encoding of side information is used to inform the receiver of the time-varying structure of the masking properties of the audio signal. A sample implementation is described with a throughput of the order of 30 kbit/sec over CD-quality audio
Keywords :
audio coding; audio discs; audio signals; data communication; decoding; hearing; 30 kbit/s; CD-quality audio; acoustic quality; audio coding; audio signals; decoder; digital data; embedded data; masking properties; multichannel signalling; perceptual redundancy; perceptually hidden data transmission; psychoacoustic modeling; receiver; side information encoding; signal reproduction; throughput; time-varying structure; Data communication; Decoding; Frequency; Humans; Information retrieval; Noise shaping; Psychoacoustic models; Signal processing; Transform coding; Watermarking;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.679678
