NF EN ISO 8253-3

NF EN ISO 8253-3

May 2012
Standard Cancelled

Acoustics - Audiometric test methods - Part 3 : speech audiometry

ISO 8253-3:2012 specifies basic methods for speech recognition tests for audiological applications.In order to ensure minimum requirements of precision and comparability between different test procedures including speech recognition tests in different languages, ISO 8253-3:2012 specifies requirements for the composition, validation and evaluation of speech test materials, and the realization of speech recognition tests. ISO 8253-3:2012 does not specify the contents of the speech material because of the variety of languages.Furthermore, ISO 8253-3:2012 also specifies the determination of reference values and fulfilment requirements for the realization and manner of presentation.ISO 8253-3:2012 specifies procedures and requirements for speech audiometry with the recorded test material being presented by air conduction through an earphone, or from a loudspeaker for sound field audiometry. Methods for using noise either for masking the non-test ear or as a competing sound are described.Some test subjects, for example children, can require amended test procedures not specified in ISO 8253-3:2012.Specialized tests such as those used for evaluating directional hearing and dichotic hearing are outside the scope of ISO 8253-3:2012.

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Main informations

Collections

National standards and national normative documents

Thematics

Gestion des risques et SST, QSE, Sécurité

Publication date

May 2012

Number of pages

41 p.

Reference

NF EN ISO 8253-3

ICS Codes

13.140   Noise with respect to human beings

Classification index

S31-083-3

Print number

1 - 03/05/2012

International kinship

ISO 8253-3:2012

European kinship

EN ISO 8253-3:2012
Sumary
Acoustics - Audiometric test methods - Part 3 : speech audiometry

ISO 8253-3:2012 specifies basic methods for speech recognition tests for audiological applications.

In order to ensure minimum requirements of precision and comparability between different test procedures including speech recognition tests in different languages, ISO 8253-3:2012 specifies requirements for the composition, validation and evaluation of speech test materials, and the realization of speech recognition tests. ISO 8253-3:2012 does not specify the contents of the speech material because of the variety of languages.

Furthermore, ISO 8253-3:2012 also specifies the determination of reference values and fulfilment requirements for the realization and manner of presentation.

ISO 8253-3:2012 specifies procedures and requirements for speech audiometry with the recorded test material being presented by air conduction through an earphone, or from a loudspeaker for sound field audiometry. Methods for using noise either for masking the non-test ear or as a competing sound are described.

Some test subjects, for example children, can require amended test procedures not specified in ISO 8253-3:2012.

Specialized tests such as those used for evaluating directional hearing and dichotic hearing are outside the scope of ISO 8253-3:2012.

Replaced standards (1)
NF EN ISO 8253-3
August 1998
Standard Cancelled
Acoustics - Audiometric test methods - Part 3 : speech audiometry

Standard replaced by (1)
NF EN ISO 8253-3
February 2022
Standard Current
Acoustics - Audiometric test methods - Part 3 : speech audiometry

This document specifies basic methods for speech recognition tests for audiological applications. NOTE       Examples of speech materials are given in Annex A. In order to ensure minimum requirements of precision and comparability between different test procedures including speech recognition tests in different languages, this document specifies requirements for the composition, validation and evaluation of speech test materials, and the realization of speech recognition tests. This document does not specify the contents of the speech material because of the variety of languages. Furthermore, this document also specifies the determination of reference values and requirements for the realization and manner of presentation. In addition, there are features of speech tests described which are important to be specified, but which are not understood as a requirement. This document specifies procedures and requirements for speech audiometry with the recorded test material being presented by an audiometer through a transducer, e.g., an earphone, bone vibrator, or loudspeaker arrangement for sound field audiometry. Methods for using noise either for masking the non-test ear or as a competing sound are described. Some test subjects, for example children, can require modified test procedures not specified in this document. Specialized tests, such as those used for evaluating directional hearing and dichotic hearing, are outside the scope of this document.

Table of contents
  • Avant-propos
    v
  • Introduction
    vi
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    2
  • 4 Exigences relatives à l'enregistrement d'un message vocal
    5
  • 4.1 Exigences générales
    5
  • 4.2 Enregistrement de référence
    6
  • 4.3 Environnement d'enregistrement
    6
  • 4.4 Réponse en fréquence du matériel d'enregistrement
    6
  • 4.5 Intervalle séparant les items successifs
    6
  • 4.6 Niveaux
    6
  • 4.7 Rapport signal/bruit
    6
  • 4.8 Listes d'items phonémiquement équilibrées
    7
  • 4.9 Listes d'items perceptuellement équilibrées
    7
  • 5 Validation des enregistrements des messages vocaux
    7
  • 5.1 Généralités
    7
  • 5.2 Détermination de la courbe d'intelligibilité vocale de référence
    7
  • 5.3 Détermination de l'équivalence perceptuelle des listes d'items
    8
  • 5.4 Détermination de la répétabilité des résultats [fiabilité moyenne "test-retest" (essai/contre-essai)]
    9
  • 5.5 Documentation
    9
  • 6 Exigences relatives à l'audiométrie vocale
    10
  • 7 Niveaux de pression acoustique du bruit ambiant dans la salle d'essai d'audiométrie vocale
    10
  • 8 Audiométrie vocale en champ acoustique
    10
  • 9 Préparation et instruction du sujet
    10
  • 9.1 Généralités
    10
  • 9.2 Préparation du sujet
    10
  • 9.3 Instruction du sujet
    11
  • 10 Mode de réponse du sujet
    11
  • 11 Détermination du niveau liminaire de perception vocale
    11
  • 12 Détermination du niveau liminaire d'intelligibilité vocale
    12
  • 12.1 Généralités
    12
  • 12.2 Mode opératoire de la méthode descendante de 5 dB en 5 dB
    12
  • 12.3 Mode opératoire de la méthode descendante alternative
    13
  • 12.4 Mode opératoire adaptatif à valeur de pas fixe
    13
  • 12.5 Autre mode opératoire adaptatif
    14
  • 13 Détermination des scores de reconnaissance vocale
    14
  • 14 Masquage controlatéral
    15
  • 15 Audiométrie vocale en présence d'un bruit de fond
    16
  • 15.1 Nature du bruit de fond
    16
  • 15.2 Présentation du bruit de fond
    16
  • 15.3 Niveaux sonores des signaux vocaux et du bruit de fond
    16
  • 15.4 Mode opératoire d'essai
    16
  • 16 Présentation de l'audiogramme vocal
    18
  • 17 Incertitude de mesure
    18
  • 18 Entretien et étalonnage de la chaîne audiométrique
    19
  • 18.1 Généralités
    19
  • 18.2 Intervalles entre les contrôles
    19
  • 18.3 Type A: contrôles de routine et essais d'écoute
    19
  • 18.4 Type B: contrôles électroacoustiques périodiques
    20
  • 18.5 Type C: contrôles d'étalonnage de base
    20
  • Annexe A (informative) Exemple de messages vocaux
    21
  • Annexe B (informative) Exemples de conditions de bruit de fond
    22
  • Annexe C (informative) Résultats caractéristiques
    23
  • Annexe D (informative) Optimisation de l'équilibre perceptuel des listes d'items
    26
  • Annexe E (informative) Incertitude de mesure
    27
  • Bibliographie
    32
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