Reference level is ambiguous, probably the amplitude of the reference tone. Ask the station for clarification. Audition has a simple tone generator if I recall.
Peak at -12 is for most audio, usually dialog. I would set a soft compression at -15 and let it roll off at a 3:1 compression. Anything that isn’t compressed by that probably needs a little volume mixing.
True peak at -6 allows some peaks to go through the -12 threshold… maybe sfx like bullets and so on. I would set a hard limiter for -6.1db. You really don’t want any peaks above the true peak, as it’s an engineering requirement, not an artistic decision.
Also, don’t rely too heavily on “match volume”. I find it doesn’t work too well on clips that are too quiet, they usually need a boost to read at the proper LEQ(A) level. LEQ(A) and LUFS are very similar measurements, if I recall, if not different names for the same thing.
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Angelo Lorenzo
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