RECOMMENDATION ITU-R BS.468-4 - Measurement of audio-frequency noise voltage level in sound broadcasting
1 Weighting network
2 Characteristics of the measuring device
    2.1 Dynamic characteristic in response to single tone-bursts
    2.2 Dynamic characteristic in response to repetitive tone-bursts
    2.3 Overload characteristics
    2.4 Reversibility error
    2.5 Overswing
    2.6 Calibration
    2.7 Input impedance
3 Presentation of results
ANNEX 1 - Constant resistance realization of weighting network
ANNEX 2 - Unweighted measurement