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Velvet-Noise Feedback Delay Network

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Fagerström, Jon
dc.contributor.author Alary, Benoit
dc.contributor.author Schlecht, Sebastian
dc.contributor.author Välimäki, Vesa
dc.date.accessioned 2020-11-06T11:37:16Z
dc.date.available 2020-11-06T11:37:16Z
dc.date.issued 2020-09-09
dc.identifier.citation Fagerström , J , Alary , B , Schlecht , S & Välimäki , V 2020 , Velvet-Noise Feedback Delay Network . in Proceedings of the International Conference on Digital Audio Effects . Proceedings of the International Conference on Digital Audio Effects , DAFx , pp. 219-226 , International Conference on Digital Audio Effects , Vienna , Austria , 09/09/2020 . < http://www.dafx.de/paper-archive/2020/proceedings/papers/DAFx2020_paper_23.pdf > en
dc.identifier.issn 2413-6700
dc.identifier.issn 2413-6689
dc.identifier.other PURE UUID: 089440eb-6cba-40ba-ae9f-4f8b315def25
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/089440eb-6cba-40ba-ae9f-4f8b315def25
dc.identifier.other PURE LINK: http://www.dafx.de/paper-archive/2020/proceedings/papers/DAFx2020_paper_23.pdf
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/52251303/DAFx2020_paper_23.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/47422
dc.description.abstract Artificial reverberation is an audio effect used to simulate the acoustics of a space while controlling its aesthetics, particularly on sounds recorded in a dry studio environment. Delay-based methods are a family of artificial reverberators using recirculating delay lines to create this effect. The feedback delay network is a popular delay-based reverberator providing a comprehensive framework for parametric reverberation by formalizing the recirculation of a set of interconnected delay lines. However, one known limitation of this algorithm is the initial slow build-up of echoes, which can sound unrealistic, and overcoming this problem often requires adding more delay lines to the network. In this paper, we study the effect of adding velvet-noise filters, which have random sparse coefficients, at the input and output branches of the reverberator. The goal is to increase the echo density while minimizing the spectral coloration. We compare different variations of velvet-noise filtering and show their benefits. We demonstrate that with velvet noise, the echo density of a conventional feedback delay network can be exceeded using half the number of delay lines and saving over 50% of computing operations in a practical configuration using low-order attenuation filters. en
dc.format.extent 8
dc.format.extent 219-226
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartof International Conference on Digital Audio Effects en
dc.relation.ispartofseries Proceedings of the International Conference on Digital Audio Effects en
dc.rights openAccess en
dc.title Velvet-Noise Feedback Delay Network en
dc.type A4 Artikkeli konferenssijulkaisussa fi
dc.description.version Peer reviewed en
dc.contributor.department Dept Signal Process and Acoust
dc.contributor.department Audio Signal Processing
dc.contributor.department Department of Media en
dc.subject.keyword Audio Effects
dc.subject.keyword Reverberation
dc.subject.keyword Digital signal processing
dc.identifier.urn URN:NBN:fi:aalto-202011066314
dc.type.version publishedVersion

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