Bug 427038 - Subwoofer speaker makes odd noise during sound check
Summary: Subwoofer speaker makes odd noise during sound check
Status: RESOLVED WORKSFORME
Alias: None
Product: plasma-pa
Classification: Plasma
Component: general (show other bugs)
Version: 5.4.0
Platform: Neon Linux
: NOR normal
Target Milestone: ---
Assignee: David Rosca
URL:
Keywords:
: 433088 (view as bug list)
Depends on:
Blocks:
 
Reported: 2020-09-27 16:43 UTC by proteus5
Modified: 2021-09-20 18:01 UTC (History)
3 users (show)

See Also:
Latest Commit:
Version Fixed In: 5.21


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Description proteus5 2020-09-27 16:43:08 UTC
SUMMARY
The audio manager sound checker is the applet in the system manager used to test the audio of each speaker. When the Subwoofer speaker is tested user can hear a kind of indistinct noise from that speaker. However using this command from terminal speaker-test -Dplug:surround51 -c6 -twav the user can hear the typical sound voice indicating the speaker works rightly telling: "Subwoofer". Is it possible to add a voice-sound also to the manager sound checker via Subwoofer button telling: Subwoofer replacing the indistinct noise? thanks 

STEPS TO REPRODUCE
1. open system manager
2. to access the audio manager
3. test the subwoofer speaker
4. open terminal
5. run speaker-test -Dplug:surround51 -c6 -twav
6. hear the voice when subwoofer is invoked.
OBSERVED RESULT
indistinct noise from subwoofer speaker

EXPECTED RESULT
voice from subwoofer telling "subwoofer"

SOFTWARE/OS VERSIONS
Operating System: KDE neon 5.19
KDE Plasma Version: 5.19.5
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.0
Kernel Version: 5.4.0-48-generic
OS Type: 64-bit
Comment 1 Nicolas Fella 2020-11-09 23:58:38 UTC
For the speaker test sounds we reply on the freedesktop sound theme. For subwoofer that would be the "audio-channel-subwoofer" sound. That seems to be missing on my system (checked with `ls /usr/share/sounds/freedesktop/stereo`). When the sound isn't available we fall back to "audio-test-signal", which is likely the indistinct sound you are hearing.

Ultimatley this seems to be an oversight in the freedesktop sound theme. I filed https://gitlab.freedesktop.org/xdg/xdg-sound-theme/-/issues/7 for this. Let's see if this can be resolved there before we think about working around this
Comment 2 Nicolas Fella 2020-11-10 00:05:10 UTC
Looking at the speaker-test code it appears that it is using the Rear Center sound for the subwoofer: https://git.alsa-project.org/?p=alsa-utils.git;a=blob;f=speaker-test/speaker-test.c#l734
Comment 3 Bug Janitor Service 2020-11-10 12:36:08 UTC
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-pa/-/merge_requests/29
Comment 4 Nicolas Fella 2020-11-10 14:00:14 UTC
Git commit bc79ca3289903cb641fd29a0b9cf8da17427421a by Nicolas Fella.
Committed on 10/11/2020 at 13:59.
Pushed by nicolasfella into branch 'master'.

[kcm] Use rear-center sound for subwoofer test

There is no audio-channel-subwoofer sound in the freedesktop theme.

Use rear-center instead like speaker-test from alsa-utils does

M  +2    -1    src/kcm/package/contents/ui/Advanced.qml

https://invent.kde.org/plasma/plasma-pa/commit/bc79ca3289903cb641fd29a0b9cf8da17427421a
Comment 5 Nate Graham 2021-02-23 17:21:45 UTC
If you re-open a bug, please explain why.
Comment 6 Bug Janitor Service 2021-03-10 04:33:41 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 7 Bug Janitor Service 2021-03-25 04:34:07 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!
Comment 8 Nicolas Fella 2021-09-20 18:01:47 UTC
*** Bug 433088 has been marked as a duplicate of this bug. ***