Originally Posted by The_K_Man
And I quote: " When you digitize it, most DAWs are calibrated to indicate 0VU at -18dBFS."
Would you mind if I quoted this over on rec.audio.pro??? The clowns on there told me emphatically that no such correlation exists and to stop wasting their effing time with my troll-bait. What you stated jibes instinctively with what I figured all along.
Now I'm thoroughly confused.
Believe the "clowns". There is no such correlation, though I suppose it could be semantics.
cannot be calibrated for that. A sequencer simply outputs data to the sound card which passes it on to the D/A, or vice versa. You can change the meter mode in some sequencers, but the software cannot sense what is actually going on at the analog stage.
, however, can be calibrated. There is no definite calibration standard, but by using a test tone, a multimeter, a regular SPPM in the sequencer, and switching jumper settings/using a control panel/manually turning trimpots you can change and verify the reference level for both the A/D and D/A.
Though a DAW can be considered to be a combination of the sequencer and sound card/converter, it is best to be very precise when discussing these matters.
Originally Posted by 6hbg
From your post, I can only deduct that you are maybe talking +6dBVU (6 db over VU reference). [...] So when you say that you are reading it at +6dBVU, it is still within the legal range (-18 + 6 = -12). You are 6 dB over the 0VU reference and 12 dB below the absolute Full Scale (-12dBFS) value.
To me it was quite clear from the context that he was talking +6 dB over 0 dBFS, which is not within the legal range when uncompensated. Also, take a look at the supplied screenshot.
Since the problem went away when turning off the Warp Engine, it was indeed a problem caused by hidden processing. The processing of a heavily clipped master caused a combination of inter-sample peaks, phase shifts and perhaps filter ringing. I do not believe this to be inter-sample peaks alone due to the severity of the change.
Now, enough nerding for today - Merry Xmas! :-)