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Convention Paper

Sound Source Design in the Very Low Frequency Domain

Authors: Pellerin, Guillaume; Polack, Jean-Dominique; Morkerken, Jean-Pierre

AES Convention 116 · Paper 6157 · May 2004

Abstract

Whereas the aerodynamic effects take a significant place in the behavior of sound sources in the low frequency domain and for signals containing a high specific energy, new complex fluid parameters have to be implemented to take into account possible causes of sound distortion such as the stalling phenomenon in the boundary layer around the mechanical structure. For the design of vented boxes, we show that the choice of a nozzle profile for the resonator ensure a better dynamical stability of the airflow and thus authorize extreme low cutoff frequencies in "dipole" configurations. It will be described some experimental and computed results based on phase spaces and fluid FEM about the radiating output of that kind of source under 40 Hz.

Details

Published in
AES Convention 116
AES Convention
116
Paper number
6157
Publication date
May 6, 2004
Session subject
Loudspeakers; Microphones
Affiliation
Laboratoire d’Acoustique Musicale (Paris 6, CNRS) (See document for exact affiliation information.)
Type
Convention Paper