An Analysis/Synthesis System of Audio Signal with Utilization of an SN Model
Loading...
Date
2004-12
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
An SN (sinusoids plus noise) model is a spectral model, in which the periodic components of the sound are represented by sinusoids with time-varying frequencies, amplitudes and phases. The remaining non-periodic components are represented by a filtered noise. The sinusoidal model utilizes physical properties of musical instruments and the noise model utilizes the human inability to perceive the exact spectral shape or the phase of stochastic signals. SN modeling can be applied in a compression, transformation, separation of sounds, etc. The designed system is based on methods used in the SN modeling. We have proposed a model that achieves good results in audio perception. Although many systems do not save phases of the sinusoids, they are important for better modelling of transients, for the computation of residual and last but not least for stereo signals, too. One of the fundamental properties of the proposed system is the ability of the signal reconstruction not only from the amplitude but from the phase point of view, as well.
Description
Citation
Radioengineering. 2004, vol. 13, č. 4, s. 51-57. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2004/04_04_51_57.pdf
http://www.radioeng.cz/fulltexts/2004/04_04_51_57.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en