Low-frequency loudspeaker-room simulation using finite differences in the time domain - Part 1: Analysis

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作者
Celestinosand, Adrian [1 ,2 ]
Nielsen, Sofus Birkedal [1 ]
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[1] Acoustics, Department of Electronic Systems, Aalborg University, DK-9220 Aalborg East, Denmark
[2] Oticon A/S, DK-2765 Smørum, Denmark
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Small- and medium-size rectangular rooms have a strong influence on the low-frequency performance of loudspeakers. A simulation program based on the finite-difference time-domain (FDTD) method is introduced to analyze the sound field produced by loudspeakers in rectangular rooms at low frequencies. A detailed-analysis in the time and frequency domains is presented by using the mean sound field deviation (MSFD); the cumulative spectral decay (CSD); and clarity. Typical scenarios of one subwoofer and two subwoofers are inspected by simulation in a virtual room;
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页码:772 / 786
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