An Efficient Audio Time-scale Modification Algorithm for use in a Subband Implementation

Authors

David Dorran, Technological University DublinFollow
Robert Lawlor, National University of Ireland, Maynooth

Document Type

Conference Paper

Rights

This item is available under a Creative Commons License for non-commercial use only

Disciplines

2. ENGINEERING AND TECHNOLOGY

Publication Details

In International Conference on Digital Audio Effects, London, England, 2003, pp. 339-343. http://www.audioresearchgroup.com/

Abstract

The Paola algorithm, is an efficient algorithm for the time scale modification of speech. It uses a simple peak alignment technique to synchronise synthesis frames and takes waveform properties and the desired time-scale factor into account to determine optimum alogrithm parameters. However, PAOLA has difficulties with certain waveform types and can result in poor synchronisation for subband implementations. SOLA is a less efficient algorithm but resolves the issues associated with PAOLA's implementation. The authors present an algorithm that is a combination of the two approaches that proves to be an efficient and effective algorithm for a subband implementation.

Recommended Citation

Dorran, D. & Lawlor, R. (2003) An efficient audio time-scale modification algorithm for use in a subband implementation. International Conference on Digital Audio Effects, London, England, 2003,