Use your phone as a mic for a Linux PC

1. Create a virtual audio device

Other apps can't directly use AudioRelay as a source. We'll have to create a virtual audio device.
AudioRelay will send sound to this virtual audio device and other apps will listen to it as if it was a real microphone.
Create a temporary virtual audio device
After a restart, the virtual device will disappear. You can follow these instructions to test AudioRelay.
  • Open a terminal window
  • Copy-paste this command
It creates a device where AudioRelay can stream audio into.
pactl load-module module-null-sink \
sink_name=audiorelay-virtual-mic-sink \
  • Then copy-paste this other one
It creates a device usable by communications apps (e.g: skype). (It simply renames the Monitor of the previous device)
pactl load-module module-remap-source \
master=audiorelay-virtual-mic-sink.monitor \
source_name=audiorelay-virtual-mic-sink \
What it should look like
Typing pulseaudio -k reloads PulseAudio and remove the temporary devices.

Result in Volume control

What the result should look like in Volume control / pavucontrol
(Installed via sudo apt install pavucontrol

2. Start AudioRelay on your phone

  • Go to the server tab
  • Click on the microphone source

3. Start AudioRelay on your PC

  • Go to the player tab
  • Select Virtual-Mic-Sink as the audio device
  • Click on your phone in the server list

4. Start your communications app (Discord, Skype...)

  • Find the microphone settings
  • Select Virtual-Mic as an input device
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