Simulated impulse responses of small rooms using hybrid methods : optimizing crossover frequency

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Authors
Scott, E.K. Ellington
Issue Date
2019-12
Type
Electronic thesis
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Language
ENG
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Architecture
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Abstract
Finite difference time domain (FDTD) methods are applied for low frequency numerical analysis of Dizzy’s Club Coca-Cola. The FDTD simulation is constructed from a 13-point stencil face-centered cubic grid with a one centimeter grid resolution. The geometrical acoustic analysis is computed using commercially available software. Each impulse is combined at varying crossover frequencies ranging from 50 Hz to 1 kHz, giving a total of 14 hybrid room impulse responses. The evaluation of each hybrid impulse response consists of the physical comparison between calculated hybrid and measured room acoustic parameters. Direct-to-reverberant energy ratio, early-to-late energy ratios, and reverberation times are used for the physical comparison to assess the accuracy and plausibility of each hybrid room impulse response.
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December 2019
School of Architecture
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Rensselaer Polytechnic Institute, Troy, NY
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