Improving modeling of audio signals by modifying transient locations

Renat Vafin, Richard Heusdens, Steven van de Par, W. Bastiaan Kleijn

To appear at Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA01), Mohonk Mountain Resort, NY, 21-24 October 2001


We propose a method for obtaining an improved representation of transients in audio signals. The representation is based on a damped sinusoidal model. To improve the representation, transient locations are modified in such a way that a transient can start only at the beginning of a sinusoidal segment. The introduced modifications facilitate a reduction of the number of damped sinusoids needed to model a transient well and the elimination of pre-echo artifacts. With a listening test we verify that the modifications do not result in a perceptual difference between the original and modified audio signals.

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