Histroy Loudness Trace
People can hardly get the loudness impression if only read the realtime meters and values. So the M-1072A function: History Loudness Trace, is to record and mark the loudness values in the past period of time.
The upper waveform is to record the past 1 minute time, and the lower waveform is to record user defined time period, from 2 min, 5 min, 10 min, 30 min, 1 hour and 2 hours.
The broadcast target, is to guarantee that most of the waves are marked between -26LKFS to -22LKFS section, the ITU and EBU regulated comfortable section.