Public bug reported:
For a little while now on my KDE Neon (based on Ubuntu 18.04) system,
while I'm talking to someone my voice will suddenly drop in pitch.
People have likened it to "Barry White" mode because my voice sounds
like his.
This can happen in Mumble, on a hangout, using riot or pretty much any
audio recording app.
Killing pulseaudio to restart it, works around the issue. However it
sometimes comes back minutes later. It's quite common having this - but
I use my microphone more than most users as I record podcasts, do live
YouTube videos and have constant audio/video meetings with people.
I have only seen this happen on 18.04 based systems, both this KDE Neon
and my main Ubuntu 18.04 rig. Since updating that rig to 19.10 I've not
seen the issue. So I suspect it's something strange in pulseaudio in
18.04
ProblemType: Bug
DistroRelease: KDE neon Plasma LTS 18.04
Package: pulseaudio 1:11.1-1ubuntu7.2 [origin: Ubuntu]
ProcVersionSignature: Ubuntu 4.18.0-20.21~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: alan 21396 F.... pulseaudio
/dev/snd/controlC0: alan 21396 F.... pulseaudio
CurrentDesktop: KDE
Date: Thu Jun 6 14:43:48 2019
InstallationDate: Installed on 2018-02-04 (486 days ago)
InstallationMedia: neon userlts "Xenial" - Build amd64 LIVE Binary
20180202-11:07
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to bionic on 2018-10-05 (243 days ago)
dmi.bios.date: 12/14/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: JBET67WW (1.31 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BV001BUK
dmi.board.vendor: LENOVO
dmi.board.version: 0B98417 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJBET67WW(1.31):bd12/14/2017:svnLENOVO:pn20BV001BUK:pvrThinkPadT450:rvnLENOVO:rn20BV001BUK:rvr0B98417WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad T450
dmi.product.name: 20BV001BUK
dmi.product.sku: LENOVO_MT_20BV_BU_Think_FM_ThinkPad T450
dmi.product.version: ThinkPad T450
dmi.sys.vendor: LENOVO
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.default.pa: 2019-02-27T21:50:13.756477
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic third-party-packages
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https://bugs.launchpad.net/bugs/1831903
Title:
Microphone audio pitch changes sometimes
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