NEN EN ISO 389 : 1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
ACOUSTICS - STANDARD REFERENCE ZERO FOR THE CALIBRATION OF PURE-TONE AIR CONDUCTION AUDIOMETERS
23-12-2002
12-01-2013
Committees responsible
National foreword
EN title page
EN foreword
Specification
Introduction
1 Scope
2 Normative references
3 Definitions
4 Specifications
Tables
1 Recommended reference equivalent threshold sound
pressure levels in a coupler complying with IEC 303
2 Reference equivalent threshold sound pressure levels in an
artificial ear complying with IEC 318
Annexes
A Notes on the derivation and application of the
recommended reference levels
B Bibliography
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