IEC 61094-4 : 1.0

Table of Contents

FOREWORD<br>Clause<br>1 Scope and object<br>2 Normative references<br>3 Definitions<br>&nbsp;&nbsp;&nbsp;3.1 Working standard microphone <br>&nbsp;&nbsp;&nbsp;3.2 Principal axis of a microphone <br>&nbsp;&nbsp;&nbsp;3.3 Reference plane of a microphone <br>&nbsp;&nbsp;&nbsp;3.4 Effective front volume of a microphone <br>&nbsp;&nbsp;&nbsp;3.5 Correction grid<br>4 Reference environmental conditions <br>5 Classification of working standard microphones <br>&nbsp;&nbsp;&nbsp;5.1 General<br>&nbsp;&nbsp;&nbsp;5.2 Type designation<br>6 Characteristics of working standard microphones <br>&nbsp;&nbsp;&nbsp;6.1 Sensitivity<br>&nbsp;&nbsp;&nbsp;6.2 Effective front volume <br>&nbsp;&nbsp;&nbsp;6.3 Upper limit of the dynamic range of a microphone <br>&nbsp;&nbsp;&nbsp;6.4 Linearity range of the microphone sensitivity <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;level <br>&nbsp;&nbsp;&nbsp;6.5 Static pressure dependence of microphone <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sensitivity <br>&nbsp;&nbsp;&nbsp;6.6 Temperature dependence of microphone sensitivity <br>&nbsp;&nbsp;&nbsp;6.7 Humidity dependence of microphone sensitivity <br>&nbsp;&nbsp;&nbsp;6.8 Stability of microphone sensitivity <br>&nbsp;&nbsp;&nbsp;6.9 Pressure equalizing leakage <br>7 Specifications<br>&nbsp;&nbsp;&nbsp;7.1 Mechanical dimensions<br>&nbsp;&nbsp;&nbsp;7.2 Electro-acoustical specifications <br>&nbsp;&nbsp;&nbsp;7.3 Identification markings <br>Annex A Provisional ground-shield reference <br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;configuration for type WS3 microphones

Abstract

Applies to working standard microphones. Specifies mechanical dimensions and certain electroacoustical characteristics for working standard microphones used in measuring systems for the determination of sound pressure to enable these microphones to be used as transfer standards in the calibration of acoustic measurement instruments.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	International Electrotechnical Committee
Pages
ISBN
Committee	TC 29