Amplitude, phase, location and orientation calibration of an acoustic vector sensor array, part I: Theory
de Bree, H.E.
TNO Industrie en Techniek
An acoustic vector sensor array consists of multiple sound pressure microphones and particle velocity sensors. A pressure microphone usually has an omni-directional response, yet a particle velocity sensor is directional. Currently, acoustic vector sensor arrays are under investigation for far field source localization and visualization. One of the major practical issues in these applications, however, is to determine the accurate position, orientation and complex (phase and amplitude) sensitivity of each sensor within the array. In this study, a calibration method is developed to determine each of those crucial parameters based on a limited number of measurements with a reference sensor and multiple sound sources located at known locations. The calibration method is also designed to be robust to mistakenly switched cable connections. Ideally, the calibration process should take place in an anechoic environment, but efforts have been made to compensate for the effects of moderate background noise and reflections.
Physics & Electronics
To reference this document use:
AS - Acoustics & Sonar
TS - Technical Sciences
High Tech Systems & Materials
Acoustics and Audiology
Acoustic vector-sensor array
Particle velocity sensors
159th Meeting Acoustical Society of America/NOISE-CON 2010, 19-23 April 2010, Baltimore, MD, USA, 9
Proceedings of Meetings on Acoustics