Fast implementation for non-linear time-scaling of stereo signals

Emmanuel Ravelli, Mark Sandler, Juan P. Bello

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper we present an improved implementation of Duxbury's adaptive phase-vocoder approach for audio time-stretching using non-linear time-scaling and temporal masked phase locking at transients [1], We show that the previous algorithm has some limitations, notably its slow implementation and its incapacity to deal with stereo signals. We propose solutions to this problems including: an improved transient detection, a much faster implementation using the LFFT for re-synthesis and a method for stretching stereo signals without artifacts. Finally, we provide some graphical results and quantitative measures to illustrate our improvements.

Original languageEnglish (US)
Title of host publication8th International Conference on Digital Audio Effects, DAFx 2005 - Proceedings
Pages182-185
Number of pages4
StatePublished - 2005
Event8th International Conference on Digital Audio Effects, DAFx 2005 - Madrid, Spain
Duration: Sep 20 2005Sep 22 2005

Other

Other8th International Conference on Digital Audio Effects, DAFx 2005
CountrySpain
CityMadrid
Period9/20/059/22/05

Fingerprint

scaling
locking
artifacts
synthesis
Scaling
Artifact

ASJC Scopus subject areas

  • Music
  • Acoustics and Ultrasonics

Cite this

Ravelli, E., Sandler, M., & Bello, J. P. (2005). Fast implementation for non-linear time-scaling of stereo signals. In 8th International Conference on Digital Audio Effects, DAFx 2005 - Proceedings (pp. 182-185)

Fast implementation for non-linear time-scaling of stereo signals. / Ravelli, Emmanuel; Sandler, Mark; Bello, Juan P.

8th International Conference on Digital Audio Effects, DAFx 2005 - Proceedings. 2005. p. 182-185.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ravelli, E, Sandler, M & Bello, JP 2005, Fast implementation for non-linear time-scaling of stereo signals. in 8th International Conference on Digital Audio Effects, DAFx 2005 - Proceedings. pp. 182-185, 8th International Conference on Digital Audio Effects, DAFx 2005, Madrid, Spain, 9/20/05.
Ravelli E, Sandler M, Bello JP. Fast implementation for non-linear time-scaling of stereo signals. In 8th International Conference on Digital Audio Effects, DAFx 2005 - Proceedings. 2005. p. 182-185
Ravelli, Emmanuel ; Sandler, Mark ; Bello, Juan P. / Fast implementation for non-linear time-scaling of stereo signals. 8th International Conference on Digital Audio Effects, DAFx 2005 - Proceedings. 2005. pp. 182-185
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