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

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

Flipse, Delano (TU Delft Electrical Engineering, Mathematics and Computer Science)

Eisemann, E. (mentor)
Martinez, Jorge (mentor)
Specht, M.M. (graduation committee)

Delft University of Technology

Computer Science and Engineering

CSE3000 Research Project

2023-02-03

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.

Finite Difference Method (FDM)
Acoustic wave fields
Frequency Response

http://resolver.tudelft.nl/uuid:0ebc249d-6d48-48d8-9f1e-ea5e9e85f2e6

Student theses

bachelor thesis

© 2023 Delano Flipse