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Adaptive Phase Distortion Synthesis

Lazzarini, Victor and Timoney, Joseph and Pekonen, Jussi and Välimäki, Vesa (2009) Adaptive Phase Distortion Synthesis. DAFx 09 proceedings of the 12th International Conference on Digital Audio Effects, Politecnico di Milano, Como Campus, Sept. 1 - 4, Como, Italy. pp. 1-8.

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Abstract

This article discusses Phase Distortion synthesis and its application to arbitrary input signals. The main elements that compose the technique are presented. Its similarities to Phase Modulation are discussed and the equivalence between the two techniques is explored. Two alternative methods of distorting the phase of an arbitrary signal are presented. The first is based on the audio-rate modulation of a first-order allpass filter coefficient. The other method relies on a re-casting of the Phase Modulation equation, which leads to a heterodyned form of waveshaping. The relationship of these implementations to the original technique is explored in detail. Complementing the article, a number of examples are discussed, demonstrating the application of the technique as an interesting digital audio effect.

Item Type: Article
Additional Information: We would like to acknowledge the support of An Foras Feasa., who partially funded the research leading to this article. The work of J. Pekonen and V. Välimäki has been financed by the Academy of Finland (projects no. 122815 and no. 126310).
Keywords: Phase Distortion synthesis; arbitrary input signals; phase modulation;
Subjects: Science & Engineering > Computer Science
Arts, Celtic Studies & Philosophy > Music
Item ID: 2335
Depositing User: Dr Victor Lazzarini
Date Deposited: 12 Jan 2011 16:17
Journal or Publication Title: DAFx 09 proceedings of the 12th International Conference on Digital Audio Effects, Politecnico di Milano, Como Campus, Sept. 1 - 4, Como, Italy
Publisher: Dept. of Electronic Engineering, Queen Mary Univ. of London,
Refereed: Yes
URI:

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