Multi-channel Audio Time-scale Modification

David Dorran, Dublin Institute of Technology
Robert Lawlor, National University of Ireland, Maynooth
Eugene Coyle, Dublin Institute of Technology

Document Type Conference Paper

Audio Engineering Society Convention Paper presented at the 119th. Convention October 7-10, 2005, New York.


Phase vecoder based approaches to audio time-scale modification introduce a reverberant artefact into the time scaled output. Recent techniques have been developed to reduce the presence of this artefact; however, these techniques have the effect of introducing additional issues relating to their application to multi-channel recordings. This paper addresses these issues by collectively analysing all channels prior to time-scaling each individual channel.