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.
Affiliation: R&D Team, Salgen, Germany
AES Convention: 147 (October 2019) Paper Number: 10238
Publication Date: October 8, 2019
Subject: Room Acoustics
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