Speex dev - Jan 2006 - About echo cancelling

Hi.
 
I've implemented "echo cancel" to voip project.
But it doesn't work well . (I cannot feel the enhancement with activated
AGC)
 
My encode settings :
1. frame size : 320 bytes.
2. sampling rate : 16000 Hz (WB)
3. mono
 
echo state initialized like this :
 
echo_state = speex_echo_state_init(framesize, framesize*16);
 
and befor encode :
 
speex_echo_cancel(echo_state, input_data, decoded_data, echo_canceled_data,
residue);
 
input_data : recorded data
decoded_data : previous decoded data 
echo_canceled_data : echo cancel output data
 
Is there any faults for my "echo cancel" usage?
 
P.S : Dear Jean-Marc.
         Thank you for kind answers.
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Try first without AGC or anything like that. 

	Jean-Marc
Le jeudi 26 janvier 2006 ? 13:54 +0900, ??? a ?crit :
> Hi.
>  
> I've implemented "echo cancel" to voip project.
> But it doesn't work well . (I cannot feel the enhancement with
> activated AGC)
>  
> My encode settings :
> 1. frame size : 320 bytes.
> 2. sampling rate : 16000 Hz (WB)
> 3. mono
>  
> echo state initialized like this :
>  
> echo_state = speex_echo_state_init(framesize, framesize*16);
>  
> and befor encode :
>  
> speex_echo_cancel(echo_state, input_data, decoded_data,
> echo_canceled_data, residue);
>  
> input_data : recorded data
> decoded_data : previous decoded data 
> echo_canceled_data : echo cancel output data
>  
> Is there any faults for my "echo cancel" usage?
>  
> P.S : Dear Jean-Marc.
>          Thank you for kind answers.
> _______________________________________________
> Speex-dev mailing list
> Speex-dev@xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev