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    A Novel Efficient Algorithm for Music Transposition

    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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    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:
    Depositing User: Robert Lawlor
    Date Deposited: 20 Jul 2018 16:00
    Publisher: IEEE
    Refereed: Yes
    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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