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arxiv 1703.00384 v1 pith:DGGCJ3N4 submitted 2017-02-28 cs.SD

Nonlinear Volterra model of a loudspeaker behavior based on Laser Doppler Vibrometry

Alessandro Loriga (1) , Parvin Moyassari (1) , Daniele Bernardini (1) , Gregorio Landi (2) , Francesca Venturini (3) , Elisabeth Dumont (3) ((1) Intranet Standard GmbH , Munich , Germany
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(2) Dipartimento di Fisica Universita di Firenze Italy (3) Institute of Applied Mathematics Physics Zurich University of Applied Sciences Winterthur Switzerland)
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classification cs.SD
keywords modelvolterranonlinearaudiobehaviorlaserlinearmean
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We demonstrate the capabilities of nonlinear Volterra models to simulate the behavior of an audio system and compare them to linear filters. In this paper a nonlinear model of an audio system based on Volterra series is presented and Normalized Least Mean Square algorithm is used to determine the Volterra series to third order. Training data for the models were collected measuring a physical speaker using a laser interferometer. We explore several training signals and filter's parameters. Results indicate a decrease in Mean Squared Error compared to the linear model with a dependency on the particular test signal, the order and the parameters of the model.

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