[Speex-dev] speex AEC lighter configuration

[Guilherme Balena Versiani]

Regarding that Speex EC, is there a way to let this parameter dynamic?

I think this parameter would be different between machines, as different 
machines have different setups, so it would be a good idea to compute 
the 'echo delay' dynamically by some way during EC process.

Regards,

Guilherme Balena Versiani.


Jean-Marc Valin wrote:
>> - Which is the value of the tail length to get good results?
>>     
>
> It depends on your setup, but if you do everything carefully, anything
> from 40ms to 200ms (convert to samples) can work well.
>
>   
>> - May I specify some other options (at configuration time or may be at
>> source) to get the speex AEC lighter, so that I can raise the tail
>> length and get best results?
>>     
>
> The tail length is the main thing that affects the complexity. BTW,
> longer tail does not necessarily mean better results (the longer the
> tail, the slower the adaptation).
>
>   
>> - May be speex AEC tunned with another parameters to improve echo
>> cancellation results?
>>     
>
> If the results aren't good, the most common cause is bad synchronisation
> between the capture and playback signals.
>
>   
>> - AEC uses floating point in some cases (altough fixed-point specify)?
>> (soft floating point is slow...)
>>     
>
> No, 1.2beta2 is entirely fixed-point. If you see otherwise, you screwed up.
>
> 	Jean-Marc
>
>   
>> Sorry if this seems to be very obvious...
>>
>> Best regards,
>>
>>
>>
>> Victor Librado Sancho
>>
>> Departamento I+D
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