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Convention Paper

A Digital Reverberator Modeled After the Scattering of Acoustic Waves by Trees in a Forest

Authors: Spratt, Kyle; Abel, Jonathan S.

AES Convention 125 · Paper 7650 · October 2008

Abstract

A digital reverberator modeled after the scattering of acoustic waves among trees in an idealized forest is presented. Termed ``treeverb,' the technique simulates forest acoustics using a network of digital waveguides, with bi-directional delay lines connecting trees represented by multi-port scattering junctions. The reverberator is designed by selecting tree locations and diameters, with waveguide delays determined by inter-tree distances, and scattering filters fixed according to tree-to-tree angles and trunk diameters. The scattering is modeled as that of plane waves normally incident on a rigid cylinder, and a simple low-order scattering filter model is presented. Small forests are seen to yield dense, gated reverb-like impulse responses.

Details

Published in
AES Convention 125
AES Convention
125
Paper number
7650
Publication date
October 6, 2008
Session subject
Audio Digital Signal Processing and Effects
Affiliation
CCRMA, Stanford University (See document for exact affiliation information.)
Type
Convention Paper