Statistical Digital Watermarks of Audio Signals

Authors

DOI:

https://doi.org/10.20535/RADAP.2015.62.20-30

Keywords:

digital watermarks, identification, correlation coefficient, quantization, signal norm, discrete Fourier transform, error correcting coding

Abstract

Introduction. Digital watermarks (DWM) refer to embedding additional information directly into audio signal for digital right management and automatic identification of radiotelephone transmissions in aeronautical, maritime and military VHF communication.
The main part. The designed embedding algorithm is based on evaluation of sliding frame to embed information or no regarding to distortions introduced by DWM. Watermark location is grounded calculation of distances norm between received and maximum likelihood estimated signal vectors in the domain of Discreet Fourier Transform and doesn’t need for any marking and synchronizing measures. Robustness of DWM against quantization, filtering, additive Gaussian noise, digital format conversion is provided by multichannel narrowband DWM transmission and application of BCH (63,30,6) error-correction code. The proposed algorithm demonstrates watermark inaudibility because of preserving signal power before and after data embedding and searching the most suitable frames for DWM positioning.
Conclusion. The proposed algorithms provide advanced compromising solution of audio watermarking process: data payload – inaudibility – robustness. The designed algorithms are applicable both in analog and digital channels for transmission monitoring and digital right management.

Author Biography

O. V. Shyshkin, Odesa National Maritime Academy, Odesa

Shyshkin O.V.

References

Перечень ссылок

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Dhar P.K. and Shimamura T. (2015) Advances in Audio Watermarking Based on Singular Value Decomposition, Springer, 58 p.

Hofbauer K., Kubin G., and Kleijn W. B. (2008) Speech Watermarking for Analog Flat-Fading Bandpass Channels, IEEE Trans on Audio, Speech, and Language Processing, Vol. 17, No 8, pp. 1624 – 1637.

Shishkin A.V. (2012) Identification of radiotelephony transmissions in VHF band of maritime radio communications. Radioelectronics and Communications Systems, Vol. 55, No 11, pp. 482 – 489.

Piotrowski Z., Nowosielski L., Zagozdzinski L., and Gajewski P. (2008) Electromagnetic Compatibility of the Military Handset with Hidden Authorization Function Based on MIL-STD-461D Results. PIERS Online, Vol. 4, No. 5, pp. 566 – 570.

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Published

2015-09-30

How to Cite

Шишкин, А. В. (2015) “Statistical Digital Watermarks of Audio Signals”, Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, 0(62), pp. 20-30. doi: 10.20535/RADAP.2015.62.20-30.

Issue

No. 62 (2015)

Section

Computing methods in radio electronics

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