[pulseaudio-discuss] Resampler quality evaluation: now with room noise!

[Alexander E. Patrakov]

30.09.2014 13:04, David Henningsson wrote:
> On 2014-09-27 17:56, Alexander E. Patrakov wrote:
>> Result: with speex-float-1, the laptop lasted 26371 seconds, while with
>> speex-float-5, the result was "only" 25997 seconds. I.e. less than 1.5%
>> of difference (and even less under more realistic conditions, i.e. with
>> the SSD, WiFi and display being on), or only 81 mW of extra power
>> consumed. And I don't yet know the standard error (will repeat the test
>> several times and report separately).
>>
>> Note: for "real" mobile devices like phones, the impact will be more
>> significant. So I limit my "ignore complaints as invalid" proposal only
>> to laptops with Sandy Bridge CPUs.
>
> Thanks for the test. i7 Sandy Bridge CPUs are not my primary concern
> either (if you have an i7 CPU then you probably have a big battery to
> fuel it, too), but what about Raspberry Pi, tablets, etc. And everything
> in between.
>
> That said, even for an i7 Sandy bridge, the question is how often will
> you be annoyed because of resampler noises, vs how often will you be
> annoyed because you've run out of battery.
>
> As a related question, when you say that we have a worse resampler than
> "proprietary OSes", that's only desktop OSes you're comparing us to, I
> assume - not iOS, Android, etc.

Yes, I am currently talking about the desktop/laptop use case only, and 
thus only about desktop OSes. I don't know how I would be able to test 
iOS, but testing Android is indeed possible, because it can run in qemu.

-- 
Alexander E. Patrakov