[Asterisk-Users] Are my expectations too high?

[Dr. Michael J. Chudobiak]

> While I agree that the Sangoma cards are good, your statement that "software 
> echo cancellation doesn't really work" is ... incorrect.
> 
> Software echo cancel works very well if it's done correctly, if your audio 
> levels are where the canceller's "sweet spot" is, and the tail is not longer 
> than the longest tail that the canceller's designed to work with.  Most 
> people don't attempt to set their stuff up correctly and they achieve poor 
> results and blame it on the software.

Well, I couldn't make the software echo canceler totally eliminate the 
echo. It did reduce it, but not enough. I tried enabling/disabling 
various algorithms, tweaking gains, thresholds, taps, etc, etc, etc...

The software approach is great in theory, but the hardware echo canceler 
"just works", without configuring anything - in my experience, anyway.

I'm curious though: did you find that the software approach totally 
eliminated echo in typical situations?


- Mike