Improved modeling of attack transients in music analysis-resynthesis

Improved modeling of attack transients in music analysis-resynthesis (1996)

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by Paul Masri , Andrew Bateman

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Datum	Value	Source
TITLE	Improved modeling of attack transients in music analysis-resynthesis	INFERENCE
AUTHOR NAME	Paul Masri	SVM HeaderParse 0.2
AUTHOR AFFIL	Digital Music Research Group, University of Bristol; 5.11 Merchant Venturers Building	SVM HeaderParse 0.2
AUTHOR ADDR	Woodland Road, Bristol BS8 1UB, U.K.	SVM HeaderParse 0.2
AUTHOR NAME	Andrew Bateman	SVM HeaderParse 0.2
AUTHOR AFFIL	Digital Music Research Group, University of Bristol; 5.11 Merchant Venturers Building	SVM HeaderParse 0.2
AUTHOR ADDR	Woodland Road, Bristol BS8 1UB, U.K.	SVM HeaderParse 0.2
ABSTRACT	Current music analysis-resynthesis models represent sounds through a set of features, which are extracted from a time-frequency representation. So that each time-frame can present a good approximation to the instantaneous spectrum, it is necessary to analyse the waveform in short segments. This is achieved with a window function whose position is advanced by a fixed amount between frames. When the window encompasses a transient event, such as the percussive onset of a note, it contains information both before and after the event. These partiallycorrelated spectra often become confused during analysis and cause audible ‘diffusion ’ upon resynthesis. This paper presents a simple, novel technique to avoid the problem, by synchronising the analysis window to transient events. Event locations are identified by observing short-term changes in the spectrum. Thereafter the position of the analysis window is constrained, to prevent it capturing the signal both sides of an event simultaneously. This method, which has been automated, yields an improvement that is clearly audible, particularly for percussive sounds which retain their ‘crispness’. 1.	SVM HeaderParse 0.2
YEAR	1996	INFERENCE
VENUE TYPE	CONFERENCE	INFERENCE
PAGES	100--103	INFERENCE
CITATIONS	8 found	ParsCit 1.0