Automatic microphone array position calibration using an acoustic sounding source
Date
2009
Authors
Jager, P.
Trinkle, M.
Hashemi-Sakhtsari, A.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
Proceedings of the 4th IEEE Conference on Industrial Electronics and Applications, 2009: pp.1-4
Statement of Responsibility
Jager, P.D.; Trinkle, M. and Hashemi-Sakhtsari, A.
Conference Name
IEEE Conference on Industrial Electronics and Applications (4th : 2009 : Xi'an, China)
Abstract
This paper presents a sensor array position calibration algorithm for determining the positions of individual microphones in a linear array automatically from time-difference of arrival measurements obtained from a mobile sounding source. The algorithm uses a nonlinear least squares method to determine the interspacing of microphones that are located along a fixed axis of a linear array. This method provides a means of establishing the positions of microphones for the purposes of acoustic localization and other beamforming applications, without the need to measure these distances by manual means. Simulations and some live experiments illustrate the method.