[pulseaudio-discuss] Resampler quality evaluation results

[Alexander E. Patrakov]

25.08.2014 01:02, Weedy wrote:
> On 24 Aug 2014 14:53, "Alexander E. Patrakov" <patrakov at gmail.com
> <mailto:patrakov at gmail.com>> wrote:
>  > P.S. The following resamplers are not on the plots:
>  >
>  > src-zero-order-hold: exactly the same as trivial.
>  > speex-float-4: very very similar to speex-float-3. Not perfect.
>  > speex-float-2: worse than speex-float-1.
>  >
>  > Please ignore them.
>  >
>  > --
>  > Alexander E. Patrakov
>
> Does that mean if I pick something arbitrarily in between speex10 and
> speex5 it could score worse then speex5?

I have specifically tested this. All speex resampler qualities above 5 
are the same or better than 5. But they use more CPU than 5, and an 
average listener won't be able to tell the difference. So they are 
pointless.

> Or do the speex samplers only have questionable curves under 5?

That's correct.

-- 
Alexander E. Patrakov