0e35cd86   
   XPost: rec.audio.pro, comp.dsp   
   From: gah@ugcs.caltech.edu   
      
   In comp.dsp rickman  wrote:   
   > Since this seems to be a top posted thread and I don't like being   
   > yelled at for top posting, maybe I shouldn't contribute... ;^)   
      
   > I can't resist.  I would not think by saying dBFS you are specifying   
   > one way or another about whether a value is RMS or peak.  The dB is   
   > just a power measurement.  Hmmm.... maybe I'm not thinking enough.   
   > Because of the reference to meters, I am thinking of peak in the sense   
   > of a vu meter that holds a peak value, not the peak level of an AC   
   > signal.  If you mean the latter, I expect all power measurements would   
   > be RMS and dBFS is a power measurement, no?   
      
   It does seem that the FS applies to measuring devices, either   
   analog or digital meters.   
      
   I believe, though, that it is usual to put a dB scale on peak-to-peak   
   reading VTVMs, with an assumed lead impedance and that the signal   
   is sinusoidal.   
      
   It seems to me that there is still some uncertainty in the   
   meaning of dBFS.   
      
   Well, consider that CDs are considered to have 96dB (or some   
   similar number) of dynamic range.  That is comparing a full   
   scale signal (just about impossible in a live recording) to   
   one that is all quantization noise and no signal.   That   
   doesn't seem quite fair.   
      
   -- glen   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)