Optimisation of subwoofer placement using a finite-difference time-domain acoustic simulation

Bachelor thesis (2023)

Authors

D.E. Flipse Electrical Engineering, Mathematics and Computer Science

Contributors

E. Eisemann Computer Graphics and Visualisation - EEMCS (supervisor 1)
Jorge Martinez (supervisor 1)
M.M. Specht Web Information Systems - EEMCS (supervisor 2)
Faculty
Electrical Engineering, Mathematics and Computer Science
Copyright: © 2023 Delano Flipse
Finite Difference Method (FDM) Acoustic wave fields Frequency Response
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Published Date

03-02-2023

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Abstract

The placement of a subwoofer has significant impact on the quality of its sound reproduction. This paper present a method to optimise subwoofer placement in a room. Resonances caused by room boundaries (called "room modes") cause localised peaks and lows for specific lower frequencies. The goal is to minimize the simulated frequency response over a listener region. To simulate the frequency response of a subwoofer location, a Finite-Difference Time-Domain method is applied. The results show that this method correlates to both a measured frequency response and an analytical model. The optimal location predicted with the simulation could not flatten every room mode, but had decreased variation for a number of resonant frequencies.