A virtual tube delay effect

Riccardo Simionato, Juho Liski, Vesa Välimäki, Federico Avanzini

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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A virtual tube delay effect based on the real-time simulation of acoustic wave propagation in a garden hose is presented. The paper describes the acoustic measurements conducted and the analysis of the sound propagation in long narrow tubes. The obtained impulse responses are used to design delay lines and digital filters, which simulate the propagation delay, losses, and reflections
from the end of the tube which may be open, closed, or acoustically attenuated. A study on the reflection caused by a finite-length tube is described. The resulting system consists of a digital waveguide model and produces delay effects having a realistic low-pass filtering. A stereo delay effect plugin in PURE DATA has been implemented and it is described here.
Original languageEnglish
Title of host publicationProceedings of the International Conference on Digital Audio Effects
PublisherUniversity of Aveiro
Number of pages8
Publication statusPublished - 4 Sep 2018
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Digital Audio Effects - University of Aveiro, Aveiro, Portugal
Duration: 4 Sep 20188 Sep 2018
Conference number: 21

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


  • Acoustics
  • acoustic measurements
  • audio signal processing
  • digital filter design


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