AS/NZS ISO 8253.2:2019
Acoustics - Audiometric test methods - Part 2: Sound field audiometry with pure-tone and narrow-band test signals
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. This standard does not include specifications for the use of hand-held loudspeakers. Speech as a test signal is not covered. The purpose of this standard is to ensure that tests of hearing, using sound field audiometry, give as high a degree of accuracy and reproducibility as possible. Identical to and reproduced from ISO 8253-2:2009.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$155.70 NZD
|
|
| HardCopy |
$173.00 NZD
|
|
| Networkable PDF |
Price varies
|
|
| Online Library ( Annual subscription) |
Info
Price varies
Online Library subscription information Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team. |
AS/NZS ISO 8253.2:2019 Audiometric test methods Sound field audiometry with pure-tone and narrow-band test signals
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test signal characteristics
4.1 General
4.2 Pure tones
4.3 FM tones
4.4 Narrow bands of noise
4.5 Harmonic distortion
4.6 Signal gating
4.7 Signal level control
4.7.1 Step size
4.7.2 Accuracy
4.7.3 Dynamic range
4.8 Means and scales for calibration
5 Sound field characteristics
5.1 General
5.2 Free sound field
5.3 Diffuse sound field
5.4 Quasi-free sound field
6 Ambient noise levels in the test room
7 Preparation and instruction of test subject
8 Determination of hearing threshold level
8.1 General
8.2 Monaural testing
8.3 Binaural testing
9 Testing with a hearing aid
10 Screening audiometry
11 Reporting of data
11.1 General
11.2 Equipment calibrated by hearing level
11.3 Equipment calibrated by sound pressure level
12 Maintenance and calibration of equipment
12.1 General
12.2 Intervals between tests
12.3 Stage A: routine examination and listening tests
12.4 Stage B: periodic electroacoustic tests
12.5 Stage C: basic calibration tests
Annex A (informative) Graphical display of results
Annex B (informative) Correction values for 45° and 90° angles of incidence
Bibliography
Keep me up-to-date
Sign up to receive updates when there are changes to this standard
Related Information
Similar Standards
-
AS/NZS 1591.1:1995
Instrumentation for audiometry - Reference zero for the calibration of pure-tone bone conduction audiometers
-
AS/NZS 1591.4:1995
Instrumentation for audiometry - A mechanical coupler for calibration of bone vibrators
-
AS/NZS 2399:1998
Acoustics - Specifications for personal sound exposure meters
-
AS/NZS ISO 389.1:2019
Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
AS/NZS ISO 8253.2:2019 Audiometric test methods Sound field audiometry with pure-tone and narrow-band test signals
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Test signal characteristics
4.1 General
4.2 Pure tones
4.3 FM tones
4.4 Narrow bands of noise
4.5 Harmonic distortion
4.6 Signal gating
4.7 Signal level control
4.7.1 Step size
4.7.2 Accuracy
4.7.3 Dynamic range
4.8 Means and scales for calibration
5 Sound field characteristics
5.1 General
5.2 Free sound field
5.3 Diffuse sound field
5.4 Quasi-free sound field
6 Ambient noise levels in the test room
7 Preparation and instruction of test subject
8 Determination of hearing threshold level
8.1 General
8.2 Monaural testing
8.3 Binaural testing
9 Testing with a hearing aid
10 Screening audiometry
11 Reporting of data
11.1 General
11.2 Equipment calibrated by hearing level
11.3 Equipment calibrated by sound pressure level
12 Maintenance and calibration of equipment
12.1 General
12.2 Intervals between tests
12.3 Stage A: routine examination and listening tests
12.4 Stage B: periodic electroacoustic tests
12.5 Stage C: basic calibration tests
Annex A (informative) Graphical display of results
Annex B (informative) Correction values for 45° and 90° angles of incidence
Bibliography
AS/NZS ISO 8253.2:2019
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.