Statistical Digital Watermarks of Audio Signals
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2015, Vol 0, Issue 62
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.
Authors and Affiliations
O. Shyshkin
Keywords
Related Articles
- EP ID EP308773
- DOI 10.20535/RADAP.2015.62.20-30
- Views 57
- Downloads 0
Analysis of Accuracy of Direct Digital Method of Correlative-Interferometric Direction Finding with Two-Dimensional Correlative Processing of Spatial Signal
The paper investigates the accuracy of the direct digital method of correlative-interferometric direction finding with reconstruction of spatial analytical signal in the aperture of linear antenna array. The main require...
The stochastic functional characteristics of radioelectronic devices
The models of physical processes in radio electronic devices (RED) as the stochastic differential equations are considered. Is shown, that all physical processes in RED - stochastic, and functional characteristics of dev...
Analysis of current sources on the operational amplifiers according to their precision requirements in a wide frequency range for Electrical Impedance Tomography problems
Introduction. The typical approaches for the current sources designing are considered. The difficulties of providing their precision in a wide frequency range are formulated. The necessary requirements for their precisio...
Monolithic microwave duplexer
The results of development monolithic dielectric duplexer with the increased attenuation between channels are given, that is achieved asymmetric amplitude-frequency characteristics of the channel filters.
Comparison of fast-acting of Java on microcomputer Raspberry Pi
Introduction. The speed of a specific set of instructions is important working with highlevel programming language for microcomputers. The method of comparing execution times of two functionally different programs on dif...