Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Instrumentation
5 Frequency range
6 General
7 Default procedure for sound
   pressure level measurement
8 Low-frequency procedure for
   sound pressure level measurement
   for the tapping machine as impact source
9 Background noise (default and low-frequency
   procedure)
10 Reverberation time in the receiving room
   (default and low-frequency procedure)
11 Conversion tooctave bands
12 Expression of results
13 Uncertainty
14 Test report
Annex A (normative) - Impact sources
Annex B (normative) - Requirements for
        loudspeakers used for reverberation
        time measurements
Annex C (informative) - Forms for the
        expression of results
Annex D (informative) - Additional guidance
Annex E (informative) - Horizontal measurements -
        Examples of suitable impact source and
        microphone positions
Annex F (informative) - Vertical measurements -
        Examples of suitable impact source and
        microphone positions
Bibliography