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Erschienen in:
2014 | OriginalPaper | Buchkapitel
Speech Watermarking Based on Coding of the Harmonic Phase
verfasst von : Inma Hernaez, Ibon Saratxaga, Jianpei Ye, Jon Sanchez, Daniel Erro, Eva Navas
Erschienen in: Advances in Speech and Language Technologies for Iberian Languages
Verlag: Springer International Publishing
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This paper presents a new speech watermarking technique using harmonic modelling of the speech signal and coding of the harmonic phase. We use a representation of the instantaneous harmonic phase which allows straightforward manipulation of its values to embed the digital watermark. The technique converts each harmonic into a communication channel, whose performance is analysed in terms of distortion and BER. The developed tests show that with a simple coding scheme a bit rate of 300bps can be achieved with minimal perceptual distortion and almost zero BER.