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Wireless Personal Communications

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06-04-2017

Audio-Speech Watermarking Using a Channel Equalizer

Authors: Shervin Shokri, Mahamod Ismail, Nasharuddin Zainal, Majid Moghaddasi

Published in: Wireless Personal Communications | Issue 4/2017

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Abstract

Currently, the use of telephone systems is highly popular in speech telecommunication and also they have a wide presence in transmission of digital signals. In recent years, audio-speech watermarking as a modern technique makes use of the telephone channel to transmit the watermark data, but addressing the watermark’s vulnerability to noise in the telephone channel is a difficult problem in digital audio-speech watermarking. This paper presents a robust audio-speech watermarking scheme that operates against channel noise according to audio-speech specifications, the channel coding and channel equalizer technique. The proposed scheme is based on the spread spectrum technique and a psychoacoustic model with use of the channel equalizer to remove or minimize the effects of channel noise over the watermark signal. The simulation results for imperceptibility of the watermark, voice quality, and robustness against channel noise are presented in this study. The results indicate that the proposed scheme is highly satisfactory for the cases mentioned above.

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Title: Audio-Speech Watermarking Using a Channel Equalizer
Authors: Shervin Shokri
Mahamod Ismail
Nasharuddin Zainal
Majid Moghaddasi
Publication date: 06-04-2017
Publisher: Springer US
Published in: Wireless Personal Communications / Issue 4/2017
Print ISSN: 0929-6212
Electronic ISSN: 1572-834X
DOI: https://doi.org/10.1007/s11277-017-4095-5

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