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Convention Paper

Ambient Atmospheric Conditions and Their Influence on Acoustic Measurements

Authors: Chapman, Peter John

AES Convention 136 · Paper 9061 · April 2014

Abstract

The paper describes an area that is often not considered by those who are involved in performing acoustic measurements. Specifically, the measured sound pressure level is directly influenced by the ambient atmospheric conditions in which the measurement is performed and by the raw condition of the device under test. The influence of temperature, atmospheric pressure, and humidity are described. Different strategies for removing these influences are presented. Furthermore, consequences of ignoring these influences in the laboratory and on the production line are illustrated in terms of measurement error, falling yield, and misalignment of sensitivity in active systems. The paper focuses on indoor acoustic measurements but the subject is equally valid for outdoor measurements.

Details

Published in
AES Convention 136
AES Convention
136
Paper number
9061
Publication date
April 6, 2014
Session subject
Transducers
Affiliation
Bang & Olufsen a/s, Struer, Denmark (See document for exact affiliation information.)
Type
Convention Paper