Schady, Arthur and Heimann, Dietrich and Feng, Joseph (2014) Acoustic effects of trees simulated by a finite-difference time-domain model. Acta acustica united with Acustica, 100 (6), pp. 1112-1119. Hirtzel. doi: 10.3813/AAA.918790. ISSN 1610-1928.
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Abstract
The simulation of sound propagation in and around forest areas requires a detailed understanding of the acoustic properties of trees. Therefore, the acoustic properties of laser-scanned real trees and idealized trees are studied by means of a three-dimensional finite difference time domain (FDTD) sound propagation model. The aim is to gain functional relationships between backscattered and transmitted sound pressure levels and selected tree characteristics. The choice of the model type enables the simultaneous consideration of multiple reflections and diffraction of sound waves. The spatial resolution of 5 cm admits a frequency range up to 1350 Hz and the resolution of the trunk and major branches. The simulated sound pressure signals are detected by a virtual microphone array in front and behind an infinitely long row of trees, respectively. Regarding the density of tree material within a volume, thin objects reflect less sound energy than dense objects, which in contrast have a noticeable acoustical effect on the transmission loss. The relations are provided by a set of empirical equations.
Item URL in elib: | https://elib.dlr.de/49315/ | ||||||||||||
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Document Type: | Article | ||||||||||||
Title: | Acoustic effects of trees simulated by a finite-difference time-domain model | ||||||||||||
Authors: |
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Date: | 1 November 2014 | ||||||||||||
Journal or Publication Title: | Acta acustica united with Acustica | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Open Access: | No | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | Yes | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Volume: | 100 | ||||||||||||
DOI : | 10.3813/AAA.918790 | ||||||||||||
Page Range: | pp. 1112-1119 | ||||||||||||
Editors: |
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Publisher: | Hirtzel | ||||||||||||
ISSN: | 1610-1928 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Acoustic Effects Trees FDTD Model Simulation | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Transport | ||||||||||||
HGF - Program Themes: | Transport System | ||||||||||||
DLR - Research area: | Transport | ||||||||||||
DLR - Program: | V VS - Verkehrssystem | ||||||||||||
DLR - Research theme (Project): | V - Verkehrsentwicklung und Umwelt II (old) | ||||||||||||
Location: | Oberpfaffenhofen | ||||||||||||
Institutes and Institutions: | Institute of Atmospheric Physics > Earth System Modelling | ||||||||||||
Deposited By: | Schady, Dr. Arthur | ||||||||||||
Deposited On: | 04 Dec 2014 07:49 | ||||||||||||
Last Modified: | 11 Jun 2021 04:12 |
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