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A model of non-linear wave propagation in horns

A model of non-linear wave propagation in horns
A model of non-linear wave propagation in horns
A model of the propagation of sound at finite levels within acoustic horns is proposed. The model is based on finite exponential elements, within which the sound field is expressible in closed analytic form. The linearly predicted sound field is corrected for nonlinear distortion at the end of each element. In order to model the dispersive standing-wave field present in the flare of many practical horn designs, the model predicts the input waveform required at the throat of a horn to give a desired waveform as output at the mouth. Comparisons between measurements of the harmonic distortion produced by loudspeaker horns and the model predictions are presented. It is concluded that the model can predict the degree of nonlinear waveform distortion associated with the propagation of large-amplitude waves in loudspeaker horns.
non-linear acoustics, horn, waves
1549-4950
569-580
Holland, Keith
90dd842b-e3c8-45bb-865e-3e7da77ec703
Morfey, Christopher
d5f9a8d0-7d8a-4915-a522-bf49dee111f2
Holland, Keith
90dd842b-e3c8-45bb-865e-3e7da77ec703
Morfey, Christopher
d5f9a8d0-7d8a-4915-a522-bf49dee111f2

Holland, Keith and Morfey, Christopher (1996) A model of non-linear wave propagation in horns. Journal of the Audio Engineering Society, 44 (7/8), 569-580.

Record type: Article

Abstract

A model of the propagation of sound at finite levels within acoustic horns is proposed. The model is based on finite exponential elements, within which the sound field is expressible in closed analytic form. The linearly predicted sound field is corrected for nonlinear distortion at the end of each element. In order to model the dispersive standing-wave field present in the flare of many practical horn designs, the model predicts the input waveform required at the throat of a horn to give a desired waveform as output at the mouth. Comparisons between measurements of the harmonic distortion produced by loudspeaker horns and the model predictions are presented. It is concluded that the model can predict the degree of nonlinear waveform distortion associated with the propagation of large-amplitude waves in loudspeaker horns.

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More information

Published date: July 1996
Keywords: non-linear acoustics, horn, waves

Identifiers

Local EPrints ID: 426253
URI: https://eprints.soton.ac.uk/id/eprint/426253
ISSN: 1549-4950
PURE UUID: 003d10cb-12ad-4588-90eb-cab01a78befe
ORCID for Keith Holland: ORCID iD orcid.org/0000-0001-7439-2375

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Date deposited: 20 Nov 2018 17:30
Last modified: 14 Mar 2019 01:54

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