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Convention Paper

Extracting the Fundamental Mode from Sound Pressure Measurements in an Acoustic Tube

Authors: Panzer, Joerg

AES Convention 147 · Paper 10238 · October 2019

Abstract

Acoustic tubes are used to provide a load to loudspeakers or to measure material properties. If the wavelength is comparable to the diameter of the tube cross-modes can be excited. This paper demonstrates a method that allows to extract only the fundamental mode from the measurement of the sound-pressure response. The only requirement is the use of three microphones mounted into the sides of the tube-wall as well as a circular cross-section.

Details

Published in
AES Convention 147
AES Convention
147
Paper number
10238
Publication date
October 6, 2019
Session subject
Room Acoustics
Affiliation
R&D Team, Salgen, Germany (See document for exact affiliation information.)
Type
Convention Paper