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Preset
A number of presets covering widely and not so widely-used metering standards are provided.
Available RMS metering presets
Custom
User defined values.
Default
All-round settings with:
- From -48 to +18 dB range, referenced at -18dB.
- 160ms integration time, 16dB/s release, 1dB peak release and 60 frames peak hold.
Ref -18dB A/B/C/K
Default settings with pre-equalization following either normalized ANSI A/B/C or ITU-R BS.1170-2 weighting curves, referenced to -18dB.
Ref -20dB A/B/C/K
Default settings with pre-equalization following either normalized ANSI A/B/C or ITU-R BS.1170-2 weighting curves, referenced to -20dB.
VU meter Standard
Standard reference VU settings, with 300ms integration, 66/7dB/s release and peak release times, referenced at 0VU/-4dBu/-18dBFS. The scale is non-linear and covers -20 to +3VU, complying with IEC 60268-17.
K-System / VU
Linear scale, conforming to Bob Katz’s recommendations, referenced at either -12, -14 or -20dB, 300ms integration, 66.7dB/s release and 12dB/s peak release times, 180 frames peak hold.
K-System / Slow
Identical to K-System/VU, except that integration times are doubled. This reflects Bob Katz’s view that Vu-meter timings are appropriate for speech, but that longer timings are better suited to music.
DIN 45406
This preset conforms to the standard used many European broadcasters such as French (PAD) and German (IRT) television. Integration time is 10ms for a 90% signal increase; fall-back time is 1.7s per 20dB; with a linear scale covering a range from -50 to +5dB, referenced at -9dBFS. The corresponding standards are DIN 45406, IEC 60268-1, and ARD Pfl.H.3/6.
Nordic N9
5ms integration time for an 80% increase, fall-back time 1.7s per 20dB, linear scale covering the range from -40 to +9dB, referenced at -18dBFS, according to IEC 60268-10/1 + N9 supp.
BBC Normal
10ms integration time for an 80% increase, fall-back time 2.8s per 24dB, custom scale with graduations spaced apart by 4dB, and 4 stands for the -18dBFS reference, according to IEC 60268-10/2a.
BBC Slow
Same as above except for ballistics, where the integration time is changed to 69.2ms for an 80% increase, and 3.8s per 24dB fall-back.
EBU Normal
10ms integration time for an 80% increase, fall-back time 2.8s per 24dB, linear scale covering the range from -12 to +12dB, referenced at -18dBFS, according to IEC 60268-10/2b.
EBU Slow
Same as above except for ballistics, where the integration time is changed to 69.2ms for an 80% increase, and 3.8s per 24dB fall-back.