[pulseaudio-discuss] Merging soxr

Alexander E. Patrakov patrakov at gmail.com
Thu Jan 8 04:58:43 PST 2015

08.01.2015 17:44, Andrey Semashev wrote:
> On Thursday 08 January 2015 11:29:42 Alexander E. Patrakov wrote:
>> 08.01.2015 01:52, Andrey Semashev wrote:
>>>> Also, with PulseAudio forced to 44.1 kHz, FooBar2000 v1.2 (which uses
>>>> DirectSound and thus, by default, resamples everything to 48 kHz) just
>>>> plays silence (with a neverending stream of underruns in pulseaudio log)
>>>> over soxr-vhq and works fine over speex-float-5. soxr-hq and soxr-mq
>>>> also work fine with wine.
>>> I didn't quite understand this test, could you elaborate? Are you
>>> running Windows in a VM here? Which one?
>> That's in wine. FooBar2000 v1.2 (and not any later version) is good for
>> testing DirectSound-related code paths.
> Hmm, I'm having trouble reproducing this (for now I'm trying with my patched
> PA 4.0 with soxr-vhq). In Foobar2000 1.2.9 on wine 1.6.2 I can only select
> "Primary Sound Driver" or "Pulseaudio" as the output, in both cases I cannot
> select the output format - it says that output format will be chosen
> automatically for the selected device. 'pactl list sink-inputs' says the
> signal sample rate is 44100 Hz. I tried to add resampler to 48 kHz in the
> Foobar2000 DSP pipeline, but the result is the same. In any case, the sound
> plays flawlessly.
> Are there any specific settings I should do to reproduce the problem?

Well, I guess this is a left-over from my experimenting with the 
unpatched alsa output module. And your distribution applies the 
non-upstream "pulseaudio output" patch.

So, please add this registry entry to reproduce the test result:


regedit alsa.reg

But it still boils down to a low-latency stream.

Alexander E. Patrakov

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