Bug 100283 - proposal: Use for destination sample rate from source with maximum sample rate (of course which supported by DAC)
Summary: proposal: Use for destination sample rate from source with maximum sample rat...
Status: RESOLVED DUPLICATE of bug 57503
Alias: None
Product: PulseAudio
Classification: Unclassified
Component: daemon (show other bugs)
Version: unspecified
Hardware: All All
: medium normal
Assignee: pulseaudio-bugs
QA Contact: pulseaudio-bugs
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-03-20 05:30 UTC by mikhail.v.gavrilov
Modified: 2017-04-27 13:07 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments

Description mikhail.v.gavrilov 2017-03-20 05:30:04 UTC 
proposal: Use for destination sample rate from source with maximum sample rate (of course which supported by DAC).

I know what I can configure needed sample rate with file:
/etc/pulse/daemon.conf
resample-method = src-sinc-medium-quality
default-sample-format = s24le
default-sample-rate = 192000

But it looks useless when all sources have 44100 Hz sample rate.

My proposal in what automatically increases output sample rate when we having some source with higer sample rate.

This saves resources CPU when system not playing sound with hight sample rate, and simplicise use Linux for audiophile users (not needed edit /etc/pulse/daemon.conf file for get better sound quality)
Comment 1 Arun Raghavan 2017-03-20 07:26:34 UTC 
There will be an 'avoid-resampling' option in the next PA release to achieve what you want.

*** This bug has been marked as a duplicate of bug 57503 ***
Comment 2 mikhail.v.gavrilov 2017-03-23 05:36:03 UTC 
Thanks, will be waiting Pulse Audio 11.
Why not applying 'avoid-resampling' option by default? (It will not make anything worse)
Comment 3 Tanu Kaskinen 2017-04-27 13:07:48 UTC 
The feature is disabled by default, because ultrasonic audio can cause audible distortion in the audible frequency range. See the "192kHz considered harmful" section in this article: https://people.xiph.org/~xiphmont/demo/neil-young.html

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