On Tuesday, January 21, 2014 12:00:59 PM UTC-5, haitic...@gmail.com wrote:   
   > On Tuesday, January 14, 2014 7:57:33 PM UTC-5, gghe...@gmail.com wrote:   
   >    
      
   > George   
   >    
   > I'm glad you showed up. I'm trying to settle an issue in synchronous   
   detection. I have a water sample I am measuring ppm pollution of a species in.   
   I can synchro detect the transmission - that's not a problem. But the signal   
   is way down in the noise.    
   Exactly how can I get it out?   
      
   Well either increase the signal or reduce the noise, grin :^)   
   Hey you might also want to check out sci.electronics.design Lots of smart   
   people there too.  (Though there is a lot more name calling, political stuff,   
   and other banter not related to electronics.)   
      
   So more seriously, can you see the signal with ppt levels of pollution?   
   What's the source of the noise?     
   (What's the light source, how do you modulate, frequency... etc.  It's hard to   
   help without knowing a lot of details.  (and even then I may not be of much   
   help.)   
   What's the detector?     
      
   George H.     
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)