Measurement of sound fields using moving microphones
Fabrice Katzberg, Radoslaw Mazur, Marco Maaß, Philipp Koch, Alfred Mertins
Abstract
The sampling of sound fields involves the measurement of spatially dependent room impulse responses, where the Nyquist-Shannon sampling theorem applies in both the temporal and spatial domains. Therefore, sampling inside a volume of interest requires a huge number of sampling points in space, which comes along with further difficulties such as exact microphone positioning and calibration of multiple microphones. In this paper, we present a method for measuring sound fields using moving microphones whose trajectories are known to the algorithm. At that, the number of microphones is customizable by trading measurement effort against sampling time. Through spatial interpolation of the dynamic measurements, a system of linear equations is set up which allows for the reconstruction of the entire sound field inside the volume of interest.
BibTeX
@inproceedings{icassp2017_measurementofsou,
title = {Measurement of sound fields using moving microphones},
author = {Fabrice Katzberg and Radoslaw Mazur and Marco Maaß and Philipp Koch and Alfred Mertins},
booktitle = {ICASSP 2017},
year = {2017}
}