NF EN ISO 8253-2

NF EN ISO 8253-2

March 2010
Standard Current

Acoustics - Audiometric test methods - Part 2 : sound field audiometry with pure-tone and narrow-band test signals

ISO 8253-2:2009 specifies relevant test signal characteristics, requirements for free, diffuse, and quasi?free sound fields, and procedures for sound field audiometry using pure tones, frequency-modulated tones or other narrow-band test signals presented by means of one or more loudspeakers. The primary purpose is the determination of hearing threshold levels in the frequency range 125 Hz to 8 000 Hz, but this range can be extended to 20 Hz to 16 000 Hz.ISO 8253-2:2009 does not include specifications for the use of hand-held loudspeakers. Speech as a test signal is not covered.The purpose of ISO 8253-2:2009 is to ensure that tests of hearing, using sound field audiometry, give as high a degree of accuracy and reproducibility as possible.Examples of graphical representations of the results are given.

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Main informations

Collections

National standards and national normative documents

Thematics

Gestion des risques et SST, QSE, Sécurité

Publication date

March 2010

Number of pages

25 p.

Reference

NF EN ISO 8253-2

ICS Codes

13.140   Noise with respect to human beings

Classification index

S31-083-2

Print number

1 - 16/02/2010

International kinship

ISO 8253-2:2009

European kinship

EN ISO 8253-2:2009
Sumary
Acoustics - Audiometric test methods - Part 2 : sound field audiometry with pure-tone and narrow-band test signals

ISO 8253-2:2009 specifies relevant test signal characteristics, requirements for free, diffuse, and quasi?free sound fields, and procedures for sound field audiometry using pure tones, frequency-modulated tones or other narrow-band test signals presented by means of one or more loudspeakers. The primary purpose is the determination of hearing threshold levels in the frequency range 125 Hz to 8 000 Hz, but this range can be extended to 20 Hz to 16 000 Hz.

ISO 8253-2:2009 does not include specifications for the use of hand-held loudspeakers. Speech as a test signal is not covered.

The purpose of ISO 8253-2:2009 is to ensure that tests of hearing, using sound field audiometry, give as high a degree of accuracy and reproducibility as possible.

Examples of graphical representations of the results are given.

Replaced standards (1)
NF EN ISO 8253-2
April 1999
Standard Cancelled
Acoustics. Audiometric test methods. Part 2 : sound field audiometry with pure tone and narrow-band test signals.

Table of contents
  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    2
  • 4 Caractéristiques des signaux d'essai
    3
  • 4.1 Généralités
    3
  • 4.2 Sons purs
    4
  • 4.3 Sons FM
    4
  • 4.4 Bandes de bruit étroites
    4
  • 4.5 Distortion harmonique
    5
  • 4.6 Suppression du signal
    5
  • 4.7 Commande de niveau du signal
    5
  • 4.8 Moyens et échelles d'étalonnage
    6
  • 5 Caractéristiques du champ acoustique
    6
  • 5.1 Généralités
    6
  • 5.2 Champ acoustique libre
    6
  • 5.3 Champ acoustique diffus
    7
  • 5.4 Champ acoustique quasi libre
    7
  • 6 Niveau de bruit ambiant dans la salle d'essai
    8
  • 7 Préparation et information des sujets
    8
  • 8 Détermination du niveau liminaire d'audition
    8
  • 8.1 Généralités
    8
  • 8.2 Écoute monaurale
    10
  • 8.3 Écoute binaurale
    10
  • 9 Essais avec appareil de correction auditive
    10
  • 10 Audiométrie de dépistage
    10
  • 11 Rapport d'essai
    10
  • 11.1 Généralités
    10
  • 11.2 Appareillage étalonné par rapport au niveau d'audition
    11
  • 11.3 Appareillage étalonné par rapport au niveau de pression acoustique
    11
  • 12 Entretien et étalonnage de l'appareillage
    11
  • 12.1 Généralités
    11
  • 12.2 Intervalles entre les essais
    11
  • 12.3 Étape A: examens de routine et essais d'écoute
    12
  • 12.4 Étape B: essais électroacoustiques périodiques
    12
  • 12.5 Étape C: essais d'étalonnage de base
    13
  • Annexe A (informative) Représentation graphique des résultats
    14
  • Annexe B (informative) Valeurs de correction à appliquer pour des angles d'incidence de 45° et 90°
    16
  • Bibliographie
    17
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