Electroacoustics - Measurement microphones - Part 10: Absolute pressure calibration of microphones at low frequencies using calculable pistonphones

IEC TR 61904-10:2022
- is applicable to laboratory standard microphones meeting the requirements of IEC 61094-1 and other types of measurement microphones,
- describes one possible absolute method for determining the complex pressure sensitivity, based on a device capable of generating a known sound pressure, especially at low frequencies, and
- provides a reproducible and accurate basis for the measurement of sound pressure at low frequencies.
All quantities are expressed in SI units.

General Information

Status
Published
Publication Date
03-Aug-2022
Technical Committee
Drafting Committee
Current Stage
PPUB - Publication issued
Start Date
26-Aug-2022
Completion Date
04-Aug-2022
Ref Project

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IEC TR 61094-10:2022 - Electroacoustics - Measurement microphones - Part 10: Absolute pressure calibration of microphones at low frequencies using calculable pistonphones
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IEC TR 61094-10
®


Edition 1.0 2022-08
TECHNICAL
REPORT

colour
inside


Electroacoustics – Measurement microphones –
Part 10: Absolute pressure calibration of microphones at low frequencies using
calculable pistonphones
IEC TR 61094-10:2022-08(en)

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IEC TR 61094-10

®


Edition 1.0 2022-08




TECHNICAL



REPORT








colour

inside










Electroacoustics – Measurement microphones –

Part 10: Absolute pressure calibration of microphones at low frequencies using

calculable pistonphones

























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ICS 17.140.50 ISBN 978-2-8322-4374-9




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– 2 – IEC TR 61904-10:2022 © IEC 2022
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Reference environmental conditions . 7
5 Principles of absolute pressure calibration of microphones using a calculable
pistonphone . 7
5.1 General principle . 7
5.2 Basic expressions . 7
5.3 Heat conduction correction . 9
5.4 Operating frequency range . 9
6 General characteristics . 9
6.1 The pistonphone .
...

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