NS EN ISO 8253-2 : 2009
Current
The latest, up-to-date edition.
ACOUSTICS - AUDIOMETRIC TEST METHODS - PART 2: SOUND FIELD AUDIOMETRY WITH PURE-TONE AND NARROW-BAND TEST SIGNALS
12-01-2013
Committees responsible
National foreword
EN title page
Foreword
Method
Introduction
1 Scope
2 Normative references
3 Definitions
4 Test signal characteristics
5 Sound field characteristics
6 Ambient noise levels in the test room
7 Preparation and instruction of test subject
8 Determination of hearing threshold level
9 Testing with a hearing aid
10 Screening audiometry
11 Reporting of data
12 Maintenance and calibration of equipment
Annexes
A (informative) Graphical display of results
B (informative) Correction values for 45 deg and 90 deg
angles of incidence
C (informative) Bibliography
Tables
1 Microphone requirements for diffuse sound field measurement
2 Maximum permissible ambient sound pressure levels in
one-third octave bands, Lmax, for sound field audiometry
A.1 Symbols for test conditions
B.1 Increase in sound pressure level at the ear
closest to the loudspeaker
Figures
A.1 Hearing threshold levels
A.2 Threshold sound pressure levels
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