Speex dev - Nov 2006 - echo residue buffer size

Hi,

What is the required size of the echo residue buffer in 
speex_echo_cancel function?

The mdf.c source would suggest that it's frame_size + 1, while 
preprocessor.c source claims it's frame_size.

Bug? Or am I missing something? I am using 1.2beta1.

Thanks,
Gregg

I suggest you have a look at the new API I introduced in svn (see
testecho.c). It's easier to use, harder to screw up, and it means I can
improve it in the future without breaking things.

	Jean-Marc

Gregg Lewandowski a ?crit :
> Hi,
> 
> What is the required size of the echo residue buffer in
> speex_echo_cancel function?
> 
> The mdf.c source would suggest that it's frame_size + 1, while
> preprocessor.c source claims it's frame_size.
> 
> Bug? Or am I missing something? I am using 1.2beta1.
> 
> Thanks,
> Gregg
> _______________________________________________
> Speex-dev mailing list
> Speex-dev@xiph.org
> http://lists.xiph.org/mailman/listinfo/speex-dev
> 
>

Jean-Marc Valin wrote:
> I suggest you have a look at the new API I introduced in svn (see
> testecho.c). It's easier to use, harder to screw up, and it means I can
> improve it in the future without breaking things.
> 
> 	Jean-Marc

Thanks for your response.

Yes, I followed The World Institute for Mental Health recommendation. :)


But I think the problem might still present in the new API.

Specifically, speex_get_echo_residual function fills up (frame_size + 1) 
elements. It's entirely possible (and even likely) that I'm missing 
something but isn't it supposed to use frame_size elements?

Thanks,
Gregg