Re: Analog AGC (was Re: [Iaxclient-devel] Re: Caller audio problem (daniel huhardeaux))

[daniel h. <de...@to...>]

Steve Kann a =E9crit :

> Steve Kann wrote:
>
>> Babar Shafiq wrote:
>>
>>> Hi List,
>>>
>>> I think I m facing the same sort of thing, I mean if I m calling I=20
>>> can hear good, I noticed
>>> when the I put down the mic volume the other party can hear little=20
>>> better, it is silence threshold
>>> ? or noice filter ?, also this problem is not coming with GSM, only=20
>>> with ilbc and speex.
>>> =20
>>>
>> Could be that you just have your mic set too hot, and it causes=20
>> clipping.  Perhaps GSM deals with mild clipping better than iLBC or=20
>> speex.
>>
>> I posted a patch a month ago or so that did analog (mixer-based)=20
>> AGC;  I didn't get any feedback, but I might just add it to CVS.  I=20
>> think I'm going to use it in my builds..
>
>
>
> I've just committed this code now;  It is enabled by default in the=20
> library, but if you set the filters yourself, to use it you must have=20
> IAXC_FILTER_AGC and IAXC_FILTER_AAGC set.
>
> Feedback welcomed on this..

Change nothing for me except that the noise is weaked I could perhaps=20
try to call someone so he/she will be able to analyze this behaviour.

--=20
Daniel