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A novel transient handling scheme for time stretching algorithms

 
: Nagel, F.; Walther, A.

Audio Engineering Society -AES-:
127th Audio Engineering Society Convention 2009. CD-ROM : October 9-12, 2009, New York, NY
New York, NY: AES, 2009
Convention Paper 7926
Audio Engineering Society (Convention) <127, 2009, New York/NY>
English
Conference Paper
Fraunhofer IIS ()

Abstract
Changing either speed or pitch of audio signals without a ecting 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 reinserted to the time dilated stationary audio signal after time stretching.

: http://publica.fraunhofer.de/documents/N-135272.html