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Convention Paper

Imperceptible Echo for Robust Audio Watermarking

Authors: Oh, Hyen-O; Youn, Dae-Hee; Hong, Jin Woo; Seok, Jong Won

AES Convention 113 · Paper 5644 · October 2002

Abstract

In echo watermarking, effort to improve robustness often conflicts with the requirement of imperceptibility. They have been inherent trade-offs in general audio watermarking techniques. In this paper, we challenge to the development of imperceptible but detectable echo kernels being directly embedded into the high-quality audio signal. Mathematical and perceptual characteristics of echo kernels are analyzed in frequency domain. Finally, we can obtain much flat frequency response in perceptually significant bands by combining closely located positive and negative echoes. The proposed echo makes it possible to improve the robustness of echo watermark without breaking the imperceptibility.

Details

Published in
AES Convention 113
AES Convention
113
Paper number
5644
Publication date
October 6, 2002
Session subject
Signal Processing
Affiliation
Dept. of Elect. and Electronic Eng., Yonsei University, Seoul, Korea ; Radio & Broadcasting Tech. Lab., Electronics and Telecommunications Research Inst., Daejon, Korea (See document for exact affiliation information.)
Type
Convention Paper