BS 7636(1993) : 1993 AMD 10028
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ACOUSTICS - AUDIOMETRIC TEST METHODS - SOUND FIELD AUDIOMETRY WITH PURE TONE AND NARROW-BAND TEST SIGNALS
15-07-1998
23-11-2012
Committees responsible
National 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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