I've been trying Voxengo Span tonight.
First, is it possible to show the FFTs of several mono tracks at once using the groups? I wasn't able to use track sends to the plugin from other tracks. I couldn't really figure out how to see the FFTs for more tracks than the one I put the VST on.
Second, I did the K-14 analysis on one of my mixed tracks and I was surprised by the result.
I've been using RME's ITU 1770 / EBU R 128 Meter. I've been using the Integrated loudness meter, volume over a defined time frame. Measures all data to calculate the Loudness Units and the Loudness Range. I've been mixing my tracks so that they end up at 0 for K-14 over the full length of the tune.
When I look at the K-14 analysis on the Voxengo, I get nothing close to this. I was looking for some pointers. I wasn't sure if I was using the plugin incorrectly. I suppose the RMS is showing close at -15.