Scott, Hugh and Wilson, Roland (1992) A comparison of filters for audio signal segmentation in audio restoration. University of Warwick. Department of Computer Science. (Department of Computer Science research report). (Unpublished)

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Abstract

This report is concerned with the choice of filters for the estimation and detection from a time-frequency representation of audio signals of partials - the approximately sinusoidal components, typically generated in harmonic series, of which many musical signals are composed. The report contains a detailed theoretical and experimental comparison between filters with Gaussian and bilateral exponential time envelopes, in terms of performance on noisy data and simplicity of implementation. It is concluded that the exponential filter is better on both counts. There follows a brief examination of the problem of onset detection, in which both additive and multiplicative approaches are examined. Some tentative conclusions are drawn about the most effective way to solve the problem of partial detection in noisy signals.

Item Type:	Report
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Science, Engineering and Medicine > Science > Computer Science
Library of Congress Subject Headings (LCSH):	Sound -- Recording and reproducing -- Digital techniques
Series Name:	Department of Computer Science research report
Publisher:	University of Warwick. Department of Computer Science
Official Date:	1992
Dates:	Date Event 1992 Completion
Number:	Number 231
Number of Pages:	35
DOI:	CS-RR-231
Institution:	University of Warwick
Theses Department:	Department of Computer Science
Status:	Not Peer Reviewed
Publication Status:	Unpublished
Related URLs:	Organisation

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