Live Convolution with Time-Varying Filters

Applied Sciences. 2018;8(1):103 DOI 10.3390/app8010103


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Journal Title: Applied Sciences

ISSN: 2076-3417 (Print)

Publisher: MDPI AG

LCC Subject Category: Technology: Engineering (General). Civil engineering (General) | Science: Biology (General) | Science: Physics | Science: Chemistry

Country of publisher: Switzerland

Language of fulltext: English

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Øyvind Brandtsegg (Norwegian University of Science and Technology, 7491 Trondheim, Norway)

Sigurd Saue (Norwegian University of Science and Technology, 7491 Trondheim, Norway)

Victor Lazzarini (Department of Music, Maynooth University, Maynooth, W23 X021 Co. Kildare, Ireland)


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Time From Submission to Publication: 11 weeks


Abstract | Full Text

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”.