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Convention Paper

A Novel Transient Handling Scheme for Time Stretching Algorithms

Authors: Nagel, Frederik; Walther, Andreas

AES Convention 127 · Paper 7926 · October 2009

Abstract

Changing either speed or pitch of audio signals without affecting the respective other is often used for music

production and creative reproduction, such as remixing. It is also utilized for other purposes such as bandwidth

extension and speech enhancement. While stationary signals can be stretched without harming the quality,

transients are often not well maintained after time stretching.

The present paper demonstrates a novel approach for transient handling in time stretching algorithms. Transient

regions are replaced by stationary signals. The thereby removed transients are saved and re-inserted to the time

dilated stationary audio signal after time stretching.

Details

Published in
AES Convention 127
AES Convention
127
Paper number
7926
Publication date
October 6, 2009
Session subject
Digital Audio Effects
Affiliation
Fraunhofer Institute for Integrated Circuits IIS, Erlangen, Germany (See document for exact affiliation information.)
Type
Convention Paper