[Asterisk-Users] more cpu intensive echo cancellers ?

[Steve Underwood]

Matthew Fredrickson wrote:

>
> On Feb 10, 2006, at 1:21 PM, Gerard Saraber wrote:
>
>>
>> Found it, going to go test it right now :) thanks!
>> So far reports have been positive on the echo, but its a slow day ;)
>> We're using cisco 7960 phones, they're pricy, but they work great and
>> sound good, if it wasn't for the echo issue, I would have been able to
>> roll the whole setup out already.
>> Actually that's not quite true, I still have to make the 7914 addon
>> module work with the 7960 phone, but that's not a show stopper.
>>
>> Either way, so far big thumbs up for the MG2 echo can, and if any
>> developers read this, feel free to add a compile flag to make it more
>> cpu intensive ;) and do more canceling.
>>
>
> Does latest MG2 behave better than KB1 on your analog lines?  I heard 
> in the past that in some cases (primarily with analog lines) that KB1 
> worked better.  Also, have you tried the echotraining=800  (in 
> zapata.conf) tweak as well?

A lot of the variability is probably due to thr lack of a DC blocker at 
the front of the echo canceller. As far as I remember, none of the 
cancellers in * has a DC blocker.

Steve