IEC 61265:2018 ED2

Electroacoustics - Instruments for measurement of aircraft noise - Performance requirements for systems to measure sound pressure levels in noise certification of aircraft

Publication date:   May 8, 2018

General information

60.60 Standard published   May 8, 2018

IEC

TC 29

International Standard

17.140.50   Electroacoustics | 49.020   Aircraft and space vehicles in general

Buying

  Published

PDF - €181.50

  English   French  



Buy

Scope

IEC 61265:2018 specifies requirements for the electroacoustical performance of systems of instruments used to measure sound for the purposes of aircraft noise certification, and for other comparisons among aircraft models, and provides methods by which tests can be made periodically to verify that the performance continues to conform to the requirements within stated limits.
In general, a sound measurement system for this purpose comprises a combination of instruments extending from a microphone, including its windscreen and other accessories, through data recording and processing devices to a suitable output. Different measurement systems, regardless of their composition, perform the necessary functions in different ways and operate on either analogue or digital principles.
IEC 61265:2018 cancels and replaces the first edition published in 1995. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) addition of guidance for measurements for aircraft other than large transport aeroplanes;
b) addition of microphones used in ground plane measurement systems;
c) addition of weighted sound level measurements other than one-third-octave band measurements, for certain aircraft types;
d) revision and clarification of requirements for digital audio recording;
e) addition of requirements for evaluation of measurement uncertainty.

Life cycle

PREVIOUSLY

WITHDRAWN
IEC 61265:1995 ED1

NOW

PUBLISHED
IEC 61265:2018 ED2
60.60 Standard published
May 8, 2018