An investigation on methods for free-field comparison calibration of measurement microphones

TY - GEN

T1 - An investigation on methods for free-field comparison calibration of measurement microphones

AU - Barrera Figueroa, Salvador

AU - Moreno Pescador, Guillermo Sergio

AU - Jacobsen, Finn

AU - Rasmussen, Knud

AU - Cutanda Henriquez, Vicente

AU - Juhl, Peter Møller

PY - 2010

Y1 - 2010

N2 - Free-field comparison calibration of measurement microphones requires that a calibrated reference microphone and a test microphone are exposed to the same sound pressure in a free field. The output voltages of the microphones can be measured either sequentially or simultaneously. The sequential method requires the sound field to have good temporal stability. The simultaneous method requires instead that the sound pressure is the same in the positions where the microphones are placed. In this paper the results of the application of the two methods are compared. A third combined method is suggested.

AB - Free-field comparison calibration of measurement microphones requires that a calibrated reference microphone and a test microphone are exposed to the same sound pressure in a free field. The output voltages of the microphones can be measured either sequentially or simultaneously. The sequential method requires the sound field to have good temporal stability. The simultaneous method requires instead that the sound pressure is the same in the positions where the microphones are placed. In this paper the results of the application of the two methods are compared. A third combined method is suggested.

M3 - Article in proceedings

VL - 39

SP - 1

EP - 10

BT - Proceedings of Internoise 2010

CY - Portugal, Lisbon

T2 - 39th International Congress and Exposition on Noise Control Engineering - Lisbon, Portugal

Y2 - 15 July 2010 through 16 July 2010

ER -