SN EN 60645-2 : 1997

INTRODUCTION
1 Scope and object
2 Normative references
3 Definitions
4 General requirements
5 Minimum requirements for specific types of
    audiometers
6 Reference conditions for specification, testing and
    calibration of speech audiometers
7 Signal level indicator
8 Output level control for speech signals
9 Output sound-pressure level and vibratory force level
1 Frequency response
11 Harmonic distortion
12 Signal-to-noise ratio
13 Masking sound
14 Monitor earphone or loudspeaker
15 Talkback system
16 Interrupter switches
17 Marking and instruction manual
Annex A - Correction figures for free-field equivalent output
for certain types of commonly used earphones
Annex ZA (normative) Normative references to international
publications with their corresponding European publications