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   rec.audio.tech      Theoretical, factual, and DIY topics in      41,683 messages   

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   Message 40,091 of 41,683   
   Mike Rivers to Randy Yates   
   Re: Questions on Levels   
   19 Nov 10 17:40:01   
   
   XPost: rec.audio.pro   
   From: mrivers@d-and-d.com   
      
   On 11/19/2010 10:22 AM, Randy Yates wrote:   
   > Mike Rivers  writes:   
   >> dBFS is a peak level.   
   >   
   > That's not the way I understand it. Am I wrong? It's   
   > no different than dBu or dBV - just a different "reference"   
   > level. Thus it would be an RMS measure.   
      
   We're getting wrapped around the axle here since I don't   
   know what your real question is. What you're asking is kind   
   of abstract.   
      
   dBFS is dB referenced to full scale which is all the bits on   
   dBu is dB referenced to .775 volts   
   dBV is dB referenced to 1 volt   
      
   Any of those can be RMS or peak. Peak is significant when   
   dealing with digital levels, but the only level that's   
   really significant is the one beyond which you can't go   
   higher, and that's only one level, 0 dBFS   
      
   > So you're saying then it's FS sine.   
      
   If you say so.  Please ask your REAL question if you have   
   one. Are you looking for a solution to a problem? Or trying   
   to interpret some marketing goof's data sheet or manual? If   
   you're just looking for definitions and conventions, then   
   you have them.   
      
      
   --   
   "Today's production equipment is IT based and cannot be   
   operated without a passing knowledge of computing, although   
   it seems that it can be operated without a passing knowledge   
   of audio." - John Watkinson   
      
   http://mikeriversaudio.wordpress.com - useful and   
   interesting audio stuff   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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