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Vol. 12 (2009 year), No. 2

Zharkikh A.A., Pavlov I.A.
Analysis of algorithm of audio wave coding on the basis of spectrograms

This paper presents a novel method of an audio signal digital watermarking by an audio signal. The method is based on the conformal algebra transformations of a unit disk. The paper examines the results of modeling method in time domain and estimates computational complexity. Encouraging results have been presented showing digital watermark embedding and extraction with negligibly small distortions.

(in Russian, стр.6, fig. 3, tables. 0, ref 9, Adobe PDF, Adobe PDF 0 Kb)

Vol. 13 (2010 year), No. 4

Zharkikh A.A., Pavlov I.A.
Analysis of audio signal self-similarity properties based on differential and integrating algorithms of fractional order

In this paper audio signal self-similarity based on differential and integrating algorithms of fraction order has been researched. In algorithms the moving sums and the moving differences describing low-frequency and high-frequency filtering of the input audio signal accordingly have been used. The frequency transfer constants of appropriate filters have been raised to the fractional order. Some results of computer simulation of transformations have been presented.

(in Russian, стр.4, fig. 4, tables. 1, ref 7, Adobe PDF, Adobe PDF 0 Kb)