ISO 5128:2023

Acoustics — Measurement of interior vehicle noise

This document specifies an engineering method for measuring the interior sound of road vehicles of categories M and N under typical driving conditions. It does not apply to agricultural tractors and field machinery. It specifies the conditions for obtaining reproducible and comparable measurements of sound pressure levels inside a vehicle. These measurements are used to obtain a representative average sound level during a typical driving cycle to enable assessment of adverse effects on human health. The results can be used for — standardized assessment of interior sound for comparisons (e.g. benchmark, consumer information programs), — verification tests, to decide whether or not the sound inside the vehicle is in accordance with specifications, — regulatory purposes, for example for evaluation of sound in relation to labour or for general health standards, and — monitoring tests, in order to check that the sound inside the vehicles has not changed since delivery, or between individual units of a consignment of vehicles. This document does evaluate the exposure to interior sound of vehicles in a way as it is commonly used for scientific effects on human health. It does not assess maximum interior sound of a vehicle under extreme driving situations, as today’s measured maximum sound pressure levels inside vehicles are far away from the risk to create instantaneous hearing damages.

Acoustique — Mesurage du bruit intérieur des véhicules

General Information

• Status: Published
• Publication Date: 29-Sep-2023
• ICS: 17.140.30 - Noise emitted by means of transport
• ICS: 43.020 - Road vehicles in general
• Technical Committee: ISO/TC 43/SC 1 - Noise
• Drafting Committee: ISO/TC 43/SC 1/WG 42 - Joint ISO/TC 43/SC 1 - ISO/TC 22 WG: Measurement of noise emission (external) from road vehicles
• Parallel Committee: ISO/TC 22 - Road vehicles
• Current Stage: 6060 - International Standard published
• Start Date: 30-Sep-2023
• Due Date: 27-Nov-2022
• Completion Date: 30-Sep-2023

Relations

• Revises: ISO 5128:1980 - Acoustics — Measurement of noise inside motor vehicles
• Effective Date: 23-Apr-2020

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5128
ISO/TC 43/SC 1
Acoustics — Measurement of interior
Secretariat: DIN
vehicle noise
Voting begins on:
2023-07-05
Acoustique — Mesurage du bruit intérieur des véhicules
Voting terminates on:
2023-08-30
Member bodies are requested to consult relevant national interests in ISO/TC
22 before casting their ballot to the e-Balloting application.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 5128:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 5128:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5128
ISO/TC 43/SC 1
Acoustics — Measurement of interior
Secretariat: DIN
vehicle noise
Voting begins on:
Acoustique — Mesurage du bruit intérieur des véhicules
Voting terminates on:
Member bodies are requested to consult relevant national interests in ISO/TC
22 before casting their ballot to the e­Balloting application.
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 5128:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 5128:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Tables of symbols and abbreviated terms . 4
5 Test equipment .6
5.1 Instrumentation for acoustic measurement . 6
5.1.1 General . 6
5.1.2 Calibration . . . 6
5.1.3 Conformity with requirements . 6
5.2 Instrumentation for vehicle speed and rotatio
...

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ISO TC 43/SC 1/WG 42
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Secretariat: DIN
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Date: 2023-05-06xx
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Acoustics — Measurement of interior vehicle noise
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Style Definition: ANNEX
Acoustique — Mesurage du bruit intérieur des véhicules
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ISO/FDIS 5128:2023(E)
© ISO 2023
Formatted: Pattern: Clear
Formatted: Pattern: Clear
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no
part of this publication may be reproduced or utilized otherwise in any form or by any means,
electronic or mechanical, including photocopying, or posting on the internet or an intranet, without
prior written permission. Permission can be requested from either ISO at the address below or
ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 5128:2023(E)
Contents
Foreword . iv
Introduction. v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Tables of symbols and abbreviated terms . 5
5 Test equipment . 6
6 Test facility . 8
7 Vehicle conditions . 12
8 Test procedure . 14
9 Measurement Uncertainty . 24
Annex A (normative) Specification on test track properties and performances . 25
A.1 Requirements of the test track . 25
A.1.1 Drive lane properties . 25
A.1.2 Conformity tests . 25
A.1.3 Homogeneity of surface properties . 26
A.2 Measurement methods and data processing . 26
A.2.1 Irregularity measurement methods . 26
A.2.2 Texture measurements methods . 26
Bibliography . 27Foreword
. iv
Introduction.
...