Calibration Errors of Uniform Linear Sensor Arrays for DOA Estimation: an Analysis with SRP-PHAT

Summary, in English

This article presents an analysis of the sensitivity of geometrical sensor errors in acoustic source localization using the well-established SRP-PHAT method. The array in this analysis is a uniform linear array and the intended source is human speech in the far field. Two major results are presented: inner-sensor geometrical errors in the linear array produce smaller localization errors than corresponding geometrical errors do in the two end-point sensors, and the localization error rises sharply for a total geometrical error exceeding the equivalence of the acoustic propagation distance of View the MathML source23 of the sample time instance (approximately 3 cm at 8 kHz). The article also provides a mathematical and graphical explanation of the results.

• Författare: Mikael Swartling; Nedelko Grbic
• Publiceringsår: 2011-04
• Språk: Engelska
• Sidor: 1071-1075
• Publikation/Tidskrift/Serie: Signal Processing
• Volym: 91
• Issue: 4
• Länkar: http://dx.doi.org/10.1016/j.sigpro.2010.09.018
• Dokumenttyp: Artikel i tidskrift
• Förlag: Elsevier
• Ämne: Signal Processing
• Status: Published
• ISBN/ISSN/Övrigt: ISSN: 0165-1684