Gigabyte X570 Aorus Elite: whine/beep when recording sound, not present under Windows

[A Z]

When recording sound under Ubuntu 18.04 there is a whine/beep present.
This is not the case under Windows 10, as such I suspect missing driver/software bits.
See attachments for audio samples of both cases.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.0.0-20.21~18.04.1-generic 5.0.8
Uname: Linux 5.0.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.7
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: az 1795 F.... pulseaudio
 /dev/snd/controlC2: az 1795 F.... pulseaudio
 /dev/snd/pcmC2D0p: az 1795 F...m pulseaudio
 /dev/snd/controlC0: az 1795 F.... pulseaudio
CurrentDesktop: XFCE
Date: Mon Jul 29 12:44:43 2019
InstallationDate: Installed on 2019-07-17 (11 days ago)
InstallationMedia: Xubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
PackageArchitecture: all
SourcePackage: alsa-driver
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/12/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F4g
dmi.board.asset.tag: Default string
dmi.board.name: X570 AORUS ELITE
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF4g:bd07/12/2019:svnGigabyteTechnologyCo.,Ltd.:pnX570AORUSELITE:pvr-CF:rvnGigabyteTechnologyCo.,Ltd.:rnX570AORUSELITE:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: Default string
dmi.product.name: X570 AORUS ELITE
dmi.product.sku: Default string
dmi.product.version: -CF
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[A Z (azaagman)]

attached windows recording sample