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i would like to record my monitor-sound (e.g. musicplayer) and microphone with audacity 2.4.2 under pop!_OS 21.04. i am using the u-phoria umc202hd (i use the third soundcard U192k).

do you know a way to record monitor sound and microphone with audacity simultaneously on linux?

settings gnome audio

❯ uname -a
Linux vl 5.13.0-7620-generic #20~1634827117~21.04~874b071-Ubuntu SMP Fri Oct 29 15:06:55 UTC  x86_64 x86_64 x86_64 GNU/Linux

❯ sudo apt install pulseaudio alsa-base alsa-utils pavucontrol -y

❯ cat /proc/asound/cards
 0 [PCH            ]: HDA-Intel - HDA Intel PCH
                      HDA Intel PCH at 0x8d118000 irq 139
 1 [Dock           ]: USB-Audio - USB-C Triple-4K Dock
                      DisplayLink USB-C Triple-4K Dock at usb-0000:00:14.0-2.1, super speed
 2 [C525           ]: USB-Audio - HD Webcam C525
                      HD Webcam C525 at usb-0000:00:14.0-2.4.2, high speed
 3 [U192k          ]: USB-Audio - UMC202HD 192k
                      BEHRINGER UMC202HD 192k at usb-0000:00:14.0-2.4.4, high speed
Sh311
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1 Answers1

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That is two separate operations. In Linux, it is possible to use loopback recording to get a copy of what is currently going out the speakers. Start looking here:

https://wiki.ubuntu.com/record_system_sound

Tim Roberts
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  • thank you for your feedback. when i open pavucontrol there is no device for recording. **how can i set an alsa plugin [audacity]?** [image about pavucontrol for recording and missing alsa plugin][1] [1]: https://i.stack.imgur.com/uDKDL.png – Sh311 Nov 16 '21 at 08:27
  • Was there an application sending audio when you took that screenshot? – Tim Roberts Nov 16 '21 at 17:31