On Sun 28 Jul at 13:29 Dave Hatch (3:711/808{at}fidonet) wrote to Arthur Marsh:

PS>> SNR                  = 47dB

BG>> Damn good S/N ratio too.  If I can maintain a 33600 
BG>> connect with my miserable 38db, you'll have no trouble 
BG>> at all.

AM> Only possible if the call didn't get digitised. 64 kbps 
AM> PCM using 8000 8 bit samples per second *can't* give you 
AM> 47 dB S/N ratio.

 DH> That's a point...   BTW - what is the theoretical noise 
 DH> floor for one A/D - D/A pair at 64k honest PCM?

Not sure, but the maximum S/N ratio would be around 40 dB.

--- msgedsq 2.1