Assessing the anisotropic features of spatial impulse responses

Benoit Alary, Pierre Massé, Vesa Välimäki, Markus Noisternig

Research output: Chapter in Book/Report/Conference proceedingConference contributionProfessional

22 Downloads (Pure)

Abstract

The direction-dependent characteristics of late reverberation have long been assumed to be perceptually isotropic, meaning that the energy of the decay should be perceived equal from every direction. This assumption has been carried into the way reverberation has been approached for spatial sound reproduction. Now that new methods exist to capture the sound field, we need to revisit the way we analyze and render the decaying sound field and more specifically,establishtheperceptualthresholdofdirectiondependent characteristics of late reverberation. Towards this goal, this paper proposes the Energy Decay Deviation (EDD) as an objective measure of the directional decay. Based on the deviation of direction-dependent Energy Decay Curves (EDC) to a mean EDC, the EDD aims to highlight the direction-dependent features characterizing the decay. This paper presents the design considerations of the EDD, discusses its limitations, and shows practical examples of its use.
Original languageEnglish
Title of host publicationProceedings of the EAA Spatial Audio Signal Processing symposium
Pages43-48
DOIs
Publication statusPublished - 2019
MoE publication typeD3 Professional conference proceedings
EventEAA Spatial Audio Signal Processing Symposium - Sorbonne, France
Duration: 6 Sep 20197 Sep 2019

Conference

ConferenceEAA Spatial Audio Signal Processing Symposium
Abbreviated titleSASPS
CountryFrance
CitySorbonne
Period06/09/201907/09/2019

Keywords

  • spatial impulse response
  • ambisonics
  • analysis
  • reverberation

Fingerprint Dive into the research topics of 'Assessing the anisotropic features of spatial impulse responses'. Together they form a unique fingerprint.

  • Projects

    ICHO: Immersive Concert for Homes

    Alary, B. & Välimäki, V.

    01/09/201630/09/2020

    Project: Academy of Finland: Other research funding

    Equipment

  • Cite this

    Alary, B., Massé, P., Välimäki, V., & Noisternig, M. (2019). Assessing the anisotropic features of spatial impulse responses. In Proceedings of the EAA Spatial Audio Signal Processing symposium (pp. 43-48) https://doi.org/10.25836/sasp.2019.32