[pulseaudio-discuss] [PATCH 0/3] resamplers

Alexander E. Patrakov patrakov at gmail.com
Sun Aug 24 00:35:12 PDT 2014


04.08.2014 19:29, I wrote:
> Anyway, I think that the task of objectively testing the resampler 
> speed and quality also needs to be done, in order to provide such 
> justifications. Please see 
> http://lists.freedesktop.org/archives/pulseaudio-discuss/2014-February/019968.html 
> for the formulation.

Now I have the tools for the basic form of quality evaluation (using a 
linear sine sweep). The tools can compare quality of various resamplers, 
including those found in proprietary operating systems. However, the end 
result is still not good enough to answer the question "is this 
resampler good enough". The (useless) answer is almost always the same: 
"no, here is a sine wave frequency that it either attenuates audibly or 
distorts audibly", even though nobody listens to e.g 18 kHz sine waves.

I will test the two new resamplers among the others today.

-- 
Alexander E. Patrakov


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