Dark Velvet Noise

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This paper proposes dark velvet noise (DVN) as an extension of the original velvet noise with a lowpass spectrum. The lowpass spectrum is achieved by allowing each pulse in the sparse sequence to have a randomized pulse width. The cutoff frequency is controlled by the density of the sequence. The modulated pulse-width can be implemented efficiently utilizing a discrete set of recursive running-sum filters, one for each unique pulse width. DVN may be used in reverberation algorithms. Typical room reverberation has a frequency-dependent decay, where the high frequencies decay faster than the low ones. A similar effect is achieved by lowering the density and increasing the pulse-width of DVN in time, thereby making the DVN suitable for artificial reverberation.

Original languageEnglish
Title of host publicationProceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)
EditorsGianpaolo Evangelista, Nicki Holighaus
Place of PublicationVienna, Austria
Number of pages8
ISBN (Electronic)978-3-200-08599-2
Publication statusPublished - 2022
MoE publication typeA4 Conference publication
EventInternational Conference on Digital Audio Effects - University of Music and Performing Arts Vienna, Vienna, Austria
Duration: 7 Sept 20229 Sept 2022
Conference number: 25

Publication series

NameProceedings of the International Conference on Digital Audio Effects
ISSN (Print)2413-6700
ISSN (Electronic)2413-6689


ConferenceInternational Conference on Digital Audio Effects
Abbreviated titleDAFx
Internet address


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