MICROPHONE AND SOUND LEVEL METER CALIBRATION IN FREE FIELD BY A NEW METHOD

Zemar M. Defilippo Soares, Samir Gerges, Michael Vorländer

Abstract

A new method of calibration of microphones and sound level meter based on the sequential comparison method is presented. The proposed method allows to determine the sensibility in free-field without the use of the expensive anechoic chamber. The results here presented are in accordance with the IEC 61672-3.

Keywords

microphone, sound level meter, free field, sweep sine, windowing

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PWC-2006-TC8-027u.pdf

DOI

-

IMEKO TC

TC8 - Traceability in Metrology

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