Lawlor, Bob and Fagan, A.D. (1999) A Novel Efficient Algorithm for Music Transposition. In: Proceedings 25th EUROMICRO Conference. Informatics: Theory and Practice for the New Millennium. IEEE, pp. 161-167. ISBN 0769503217

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Abstract

We present a novel efficient algorithm for scaling the frequency content of an audio signal by any desired factor in the range 0.5 (minus one octave) to 2.0 (plus one octave) enabling a recording to be played in any desired key without affecting the tempo. The algorithm uses an adaptive overlap-add (AOLA) technique to realise the desired frequency scaling without affecting the duration. Informal listening tests show output quality equal to that of a conventional overlap-add algorithm used in many commercially available systems, but offering significant computational saving relative to that algorithm. The algorithm is also used to simultaneously scale both the tempo and key of a recording.

Item Type:	Book Section
Keywords:	music; speech-based user interfaces; speech processing;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering
Item ID:	9709
Identification Number:	https://doi.org/10.1109/EURMIC.1999.794761
Depositing User:	Robert Lawlor
Date Deposited:	20 Jul 2018 16:00
Publisher:	IEEE
Refereed:	Yes
URI:	https://ieeexplore.ieee.org
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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