Pulse Localization and Fourier Analysis in the Mathematical Model of Acoustic Transient Field

Lukas Koudela, Jindrich Jansa

Pulse Localization and Fourier Analysis in the Mathematical Model of Acoustic Transient Field

Číslo: 3/2016
Periodikum: Advances in Electrical and Electronic Engineering
DOI: 10.15598/aeee.v14i3.1433

Klíčová slova: Acoustic diffuser; cross-correlation; numerical modelling; room acoustics, Akustický difuzér; Vzájemná korelace; Numerické modelování; akustika místnosti.

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Anotace: The numerical model of a semi-cylindrical acoustic diffuser in planar transient acoustic field is discussed. The finite element method was used for the solution of the model. From the computed waveforms the straight and the reflected pulses were automatically extracted using cross-correlation. The harmonic decomposition was performed on the obtained pulses and the results were plotted in the polar pattern.