28 Sep
2013
28 Sep
'13
9:31 a.m.
On Sat, Sep 28, 2013 at 04:12:42AM +0200, Alexander Schreiber wrote:
[...]
You probably won't get _that_ much since I'm
pretty sure the compression
algorithms use tricks like psychoacoustic models (hello, mp3) which aren't
going to be so good with modems.
Lossy compression is *optional*. The G.711 "codec" is effectively a null
operation. It gives full-duplex 64kb/s transmission and is indistinguishable
from ISDN. Even if you were to do it over cellular.
You get what you pay for, and compression is used to (try to!) save money at
the expense of call quality. And free VoIP such as Skype is worth what you paid
for it.