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Time-scale modification of music using a synchronized subband/time-domain approach
Dorran, David; Lawlor, Bob
Time-domain audio time-scaling algorithms are efficient in comparison to their frequency-domain counterparts, but they rely upon the existence of a quasi-periodic signal to produce a high quality output. This requirement makes them unsuitable for direct application to complex multi-pitched signals such as polyphonic music. However, it has been shown that applying time-domain algorithms on a subband basis can resolve this issue. Existing subband/time-domain approaches result in a reverberant/phasy artifact being introduced into the output due to poor synchronization between time-scaled subbands. This paper presents a number of synchronization schemes that greatly reduce the amount of reverberation/phasiness introduced into the time-scaled output by existing subband/time-domain approaches.
Keyword(s): synchronisation; audio signal processing; music; time-domain analysis
Publication Date:
2004
Type: Book chapter
Peer-Reviewed: Yes
Institution: Maynooth University
Citation(s): Dorran, David and Lawlor, Bob (2004) Time-scale modification of music using a synchronized subband/time-domain approach. In: IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE, pp. 225-228. ISBN 0780384849
Publisher(s): IEEE
File Format(s): other
Related Link(s): http://eprints.maynoothuniversity.ie/8827/1/BL-Time-scale-2004.pdf
First Indexed: 2017-09-14 06:22:04 Last Updated: 2017-09-14 06:22:04