Dark Velvet Noise

Jon Fagerström; Nils Meyer-Kahlen; Sebastian J. Schlecht; Vesa Välimäki

Dark Velvet Noise

Jon Fagerström^*, Nils Meyer-Kahlen, Sebastian J. Schlecht, Vesa Välimäki

^*Corresponding author for this work

Department of Art and Media

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

4 Citations (Scopus)

103 Downloads (Pure)

Abstract

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 language	English
Title of host publication	Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)
Editors	Gianpaolo Evangelista, Nicki Holighaus
Place of Publication	Vienna, Austria
Publisher	DAFx
Pages	192-199
Number of pages	8
Edition	2022
ISBN (Electronic)	978-3-200-08599-2
Publication status	Published - 2022
MoE publication type	A4 Conference publication
Event	International Conference on Digital Audio Effects - University of Music and Performing Arts Vienna, Vienna, Austria Duration: 7 Sept 2022 → 9 Sept 2022 Conference number: 25 https://dafx2020.mdw.ac.at/DAFx20in22/ https://dafx2020.mdw.ac.at/DAFx20in22/index.html

Publication series

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

Conference

Conference	International Conference on Digital Audio Effects
Abbreviated title	DAFx
Country/Territory	Austria
City	Vienna
Period	07/09/2022 → 09/09/2022
Internet address	https://dafx2020.mdw.ac.at/DAFx20in22/ https://dafx2020.mdw.ac.at/DAFx20in22/index.html

Access to Document

Fagerström_et alii_DARK VELVET NOISEFinal published version, 2.51 MBLicence: CC BY

https://dafx2020.mdw.ac.at/proceedings/papers/DAFx20in22_paper_31.pdfLicence: CC BY

Cite this

Fagerström, J., Meyer-Kahlen, N., Schlecht, S. J., & Välimäki, V. (2022). Dark Velvet Noise. In G. Evangelista, & N. Holighaus (Eds.), Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22) (2022 ed., pp. 192-199). Article 31 (Proceedings of the International Conference on Digital Audio Effects). DAFx . https://dafx2020.mdw.ac.at/proceedings/papers/DAFx20in22_paper_31.pdf

@inproceedings{6cd8f34d483041779d9387c2be420223,

title = "Dark Velvet Noise",

abstract = "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.",

author = "Jon Fagerstr{\"o}m and Nils Meyer-Kahlen and Schlecht, {Sebastian J.} and Vesa V{\"a}lim{\"a}ki",

note = "Funding Information: This research is part of the activities of the Nordic Sound and Music Computing Network— NordicSMC (NordForsk project no. 86892) and has received funding from the European Union Horizon 2020 research and innovation program under the Marie Sk{\l}odowska-Curie grant agreement no. 812719. Funding Information: This research is part of the activities of the Nordic Sound and Music Computing Network- NordicSMC (NordForsk project no. 86892) and has received funding from the European Union Horizon 2020 research and innovation program under the Marie Sk{\l}odowska-Curie grant agreement no. 812719. Publisher Copyright: Copyright: {\textcopyright} 2022 Jon Fagerstr{\"o}m et al.; International Conference on Digital Audio Effects, DAFx ; Conference date: 07-09-2022 Through 09-09-2022",

year = "2022",

language = "English",

series = "Proceedings of the International Conference on Digital Audio Effects",

publisher = "DAFx ",

pages = "192--199",

editor = "Gianpaolo Evangelista and Nicki Holighaus",

booktitle = "Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)",

address = "Austria",

edition = "2022",

url = "https://dafx2020.mdw.ac.at/DAFx20in22/, https://dafx2020.mdw.ac.at/DAFx20in22/index.html",

}

Fagerström, J , Meyer-Kahlen, N , Schlecht, SJ & Välimäki, V 2022, Dark Velvet Noise. in G Evangelista & N Holighaus (eds), Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22). 2022 edn, 31, Proceedings of the International Conference on Digital Audio Effects, DAFx , Vienna, Austria, pp. 192-199, International Conference on Digital Audio Effects, Vienna, Austria, 07/09/2022. <https://dafx2020.mdw.ac.at/proceedings/papers/DAFx20in22_paper_31.pdf>

Dark Velvet Noise. / Fagerström, Jon ; Meyer-Kahlen, Nils ; Schlecht, Sebastian J. et al.
Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22). ed. / Gianpaolo Evangelista; Nicki Holighaus. 2022. ed. Vienna, Austria: DAFx , 2022. p. 192-199 31 (Proceedings of the International Conference on Digital Audio Effects).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Dark Velvet Noise

AU - Fagerström, Jon

AU - Meyer-Kahlen, Nils

AU - Schlecht, Sebastian J.

AU - Välimäki, Vesa

N1 - Conference code: 25

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85138821208&partnerID=8YFLogxK

M3 - Conference article in proceedings

AN - SCOPUS:85138821208

T3 - Proceedings of the International Conference on Digital Audio Effects

SP - 192

EP - 199

BT - Proceedings of the 25th International Conference on Digital Audio Effects (DAFx20in22)

A2 - Evangelista, Gianpaolo

A2 - Holighaus, Nicki

PB - DAFx

CY - Vienna, Austria

T2 - International Conference on Digital Audio Effects

Y2 - 7 September 2022 through 9 September 2022

ER -

Dark Velvet Noise

Abstract

Publication series

Conference

Access to Document

Other files and links

Fingerprint

VRACE: Virtual Reality Audio for Cyber Environments

NordicSMC: Nordic Sound and Music Computing Network

Aalto Acoustics Lab

Cite this

Dark Velvet Noise

Abstract

Publication series

Conference

Access to Document

Other files and links

Fingerprint

Projects

VRACE: Virtual Reality Audio for Cyber Environments

NordicSMC: Nordic Sound and Music Computing Network

Equipment

Aalto Acoustics Lab

Cite this