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Open AccessArticle

Live Convolution with Time-Varying Filters

1
Norwegian University of Science and Technology, 7491 Trondheim, Norway
2
Department of Music, Maynooth University, Maynooth, W23 X021 Co. Kildare, Ireland
*
Author to whom correspondence should be addressed.
Academic Editor: Vesa Valimaki
Appl. Sci. 2018, 8(1), 103; https://doi.org/10.3390/app8010103
Received: 31 October 2017 / Revised: 29 December 2017 / Accepted: 3 January 2018 / Published: 12 January 2018
(This article belongs to the Special Issue Sound and Music Computing)
The paper presents two new approaches to artefact-free real-time updates of the impulse response in convolution. Both approaches are based on incremental updates of the filter. This can be useful for several applications within digital audio processing: parametrisation of convolution reverbs, dynamic filters, and live convolution. The development of these techniques has been done within the framework of a research project on crossadaptive audio processing methods for live performance. Our main motivation has thus been live convolution, where the signals from two music performers are convolved with each other, allowing the musicians to “play through each other’s sound”. View Full-Text
Keywords: convolution; reverberation; audio effect; live processing; morphing; cross synthesis convolution; reverberation; audio effect; live processing; morphing; cross synthesis
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Brandtsegg, Ø.; Saue, S.; Lazzarini, V. Live Convolution with Time-Varying Filters. Appl. Sci. 2018, 8, 103.

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