Planar reflector panels with convex edges

Jonathan Rathsam, Lily M Wang

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

When designing rooms for speech or music, acoustical designers often use reflector panels to direct additional sound energy to listeners. Reflector panels introduce some coloration into the reflected signal due to edge diffraction. Furthermore, planar reflector panels reflect sound primarily into a single "specular" reflected direction. This project investigates the reflected sound field from planar acoustical reflectors with rounded reflector edges away from the source side, creating a convex edge. The authors use 2D boundary element method (BEM) sound field simulations to compare the performance of the convex-edged reflectors against flat reflectors. Results show that the convex edge increases nonspecular reflections by 3 dB with each doubling of curvature radius. Because the simulations were run in two dimensions, results generalize only to long reflectors mounted above long sources, such as an orchestra or choir.

Original languageEnglish (US)
Pages (from-to)905-913
Number of pages9
JournalActa Acustica united with Acustica
Volume96
Issue number5
DOIs
StatePublished - Sep 1 2010

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reflectors
sound fields
acoustics
Sound
music
boundary element method
rooms
simulation
curvature
color
radii
Simulation
diffraction

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Music

Cite this

Planar reflector panels with convex edges. / Rathsam, Jonathan; Wang, Lily M.

In: Acta Acustica united with Acustica, Vol. 96, No. 5, 01.09.2010, p. 905-913.

Research output: Contribution to journalArticle

Rathsam, Jonathan ; Wang, Lily M. / Planar reflector panels with convex edges. In: Acta Acustica united with Acustica. 2010 ; Vol. 96, No. 5. pp. 905-913.
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