ISO/TR 17534-2:2014

Acoustics — Software for the calculation of sound outdoors — Part 2: General recommendations for test cases and quality assurance interface

ISO/TR 17534-2:2014 contains general additional recommendations for the implementation of calculation methods in software, a general applicable set of test cases described geometrically, and a description of the QA (Quality Assurance Interface) that allows the exchange of data between software programs quality assured according to ISO 17534‑1. The ISO 17534 series contains identification of the official documentation.

Acoustique — Logiciels pour le calcul des bruits à l'air libre — Partie 2: Recommandations générales pour les cas d'essai et l'interface d'assurance qualité

General Information

• Status: Published
• Publication Date: 24-Jul-2014
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• Technical Committee: ISO/TC 43/SC 1 - Noise
• Drafting Committee: ISO/TC 43/SC 1 - Noise
• Current Stage: 6060 - International Standard published
• Completion Date: 25-Jul-2014

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 17534-2
First edition
2014-08-01
Acoustics — Software for the
calculation of sound outdoors —
Part 2:
General recommendations for test
cases and quality assurance interface
Acoustique — Logiciels pour le calcul des bruits à l’air libre —
Partie 2: Recommandations générales pour les cas d’essai et
l’interface d’assurance qualité
Reference number
ISO/TR 17534-2:2014(E)
©
ISO 2014

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ISO/TR 17534-2:2014(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
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ii © ISO 2014 – All rights reserved

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ISO/TR 17534-2:2014(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Additional recommendations . 1
5 Test cases (T) . 1
5.1 General . 1
5.2 Test cases (T) applicable in method specific Technical Reports . 2
6 Quality Assurance Interface.18
Bibliography .19
© ISO 2014 – All rights reserved iii

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ISO/TR 17534-2:2014(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
ISO 17534 consists of the following parts, under the general title Acoustics — Software for the calculation
of sound outdoors:
— Part 1: Quality requirements and quality assurance
— Part 2: General recommendations for test cases and quality assurance interface [Technical report]
The following parts are under preparation:
— Part 3: Recommendations for quality assured implementation of ISO 9613-2 in software according to
ISO 17534-1 [Technical report]
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ISO/TR 17534-2:2014(E)

Introduction
The general structure of the ISO 17534 series consisting of ISO 17534-1 and various Technical Reports is
shown in Figure 1. The series itself describes the measures necessary to assure a high quality calculation
methods implemented in different software products with respect to correctness and precision. The
requirements and specifications included are obviously independent from a specific calculation method,
because they should be applied for all of them.
This Technical Report contains generally applicable recommendations to be taken into account in the
formulation of such recommendations in the method-specific Technical Reports. Further, a set of test
cases is presented that can be supplemented with method-specific parameters to be applied in these
Technical Reports.
This Technical Report is a first step. Contents will be supplemented step by step, and or even withdrawn
due to newer technical or scientific expertise.
Figure 1 — Structure of the ISO 17534 series consisting of the main Part 1 and subordinated
Technical Reports
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TECHNICAL REPORT ISO/TR 17534-2:2014(E)
Acoustics — Software for the calculation of sound
outdoors —
Part 2:
General recommendations for test cases and quality
assurance interface
1 Scope
This Technical Report contains general additional recommendations for the implementation of
calculation methods in software, a general applicable set of test cases described geometrically, and a
description of the QA (Quality Assurance Interface) that allows the exchange of data between software
programs quality assured according to ISO 17534-1.
ISO 17534 series contains identification of the official documentation.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 17534-1:—, Acoustics — Software for the calculation of sound outdoors — Part 1: Quality requirements
1)
and quality assurance
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 17534-1:— apply.
4 Additional recommendations
This chapter is only a place holder, it shall be decided from time to time if due to experience with method
specific recommendations. These shall be taken as a general recommendation and transferred to this
Technical Report.
5 Test cases (T)
5.1 General
All aspects of a method shall be covered by test cases. It is to ensure that the test cases cover the main
issues which can significantly affect results.
These test cases are described with exact geometry, but generally with respect to parameters that might
be different with different calculation methods.
For the precisely defined test cases, according to A.2 in ISO 17534-1:—, these general parameter
descriptions can be concretized and supplemented by step-by-step results.
1) To be published.
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ISO/TR 17534-2:2014(E)

5.2 Test cases (T) applicable in method specific Technical Reports
5.2.1 T01 to T03 — Flat ground with homogenous acoustic properties
Key
S source
R receiver
Figure 2 — Test case to check free sound propagation with different conditions
Input data:
Table 1 — Coordinates of source, S, and receiver, R
x y z
in m in m in m
S 10 10 1
R 200 50 4
Table 2 — Octave band sound power levels (linear) of the source
Quantity Unit Values
f Hz 63 125 250 500 1 000 2 000 4 000 8 000
L dB 93 93 93 93 93 93 93 93
W
T01 – Reflecting ground (e.g. G = 0)
T02 – Mixed ground (e.g. G = 0,5)
T03 – Porous ground (e.g. G = 1)
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ISO/TR 17534-2:2014(E)

5.2.2 T04 — Flat ground with spatially varying acoustic properties
Key
S source
R receiver
A1 reflecting ground
A2 mixed ground
A3 porous ground
Figure 3 — Flat ground with spatially varying acoustic properties
Input data:
Identical to above, but spatially varying acoustic properties as shown in Table 3.
Table 3 — Areas with different acoustic properties (T04)
Area Ground Coordinates of areas
x y x y x y x y
1 1 2 2 3 3 4 4
in m in m in m in m in m in m in m in m
A1 reflecting 0 60 50 60 50 −10 0 −10
A2 mixed 50 60 150 60 150 −10 50 −10
A3 porous 150 60 210 60 210 −10 150 −10
© ISO 2014 – All rights reserved 3

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