1
Scope
2
References
3
Definitions
4
Abbreviations and acronyms
5
Conventions
6
General
6.1
Electrical, acoustic and other levels
6.2
Universal requirements
6.3
Averaging
7
Method A – Immediate indication of speech volume for real-time
applications
8
Method B – Active speech level for other applications than those
mentioned in method A
8.1
Principle of measurement
8.2
Details of realization
8.3
Values of the parameters
9
Approximate equivalents of method B
10
Specification
10.1
Signal input
10.2
Filter
10.3
Speech-level measurements
11
Routine calibration of method-B meter
11.1
No input signal
11.2
Continuous tone
11.3
White noise
Annex A – A method using a speech voltmeter complying with method B in
network conditions
Annex B – Application of approximate equivalents of method B to
super-wideband speech signals
Annex C – Application of approximate equivalents of method B to full
band speech signals
Bibliography