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Horn Loudspeakers Nonlinearity Comparison and Linearization Using Volterra Series

The characterization of a weakly nonlinear electroacoustic device with usual methods of measurement (THD, intermodulation) does not illustrate the nonlinearities themselves, but only some of their effects. Device linearization can be achieved by applying the inverse nonlinearity upstream of the device, under the condition that the nonlinearity law is known in detail. This paper presents nonlinearities behavior comparison of horn loudspeakers of different frequency ranges using an experimental method of weak nonlinearity characterisation and compensation, based on a representation of the nonlinearity by Volterra series using multitone excitations.

Author: Bard, Delphine
Affiliation: Lund University, Engineering Acoustics
AES Convention:124 (May 2008) Paper Number:7318 Import into BibTeX
Subject:Loudspeakers

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