Pulseaudio

Tutorials / How-Tos

Make A Microphone Mono / Make A Virtual Input

Make A Virtual Input Source That Is Mono Using Both Channels Of An (Hardware) Input That Is Stereo

I have tested this and it works for me

1. pacmd set-default-source 0

• From what I can tell, you can’t make a remap a source that is set to default

2. pacmd load-module module-remap-source source_name=mono master={INSERT SOURCE NAME HERE} master_channel_map=front-left,front-right channel_map=mono,mono

• This will create a virtual mono input that uses both channels for the one channel from the stereo input that we specified

Make A Virtual Input Source That Is Mono Using Only The Left or Right Channel Of An (Hardware) Input That Is Stereo

I have tested this and I couldn’t get it working for me

1. pacmd set-default-source 0

• From what I can tell, you can’t make a remap a source that is set to default

2. To map the left channel: pacmd load-module module-remap-source master={INSERT SOURCE NAME HERE} channels=1 master_channel_map=front-left channel_map=mono

• To map the right channel: pacmd load-module module-remap-source master={INSERT SOURCE NAME HERE} channels=1 master_channel_map=front-right channel_map=mono
• This will create a virtual mono input that uses only the left or right channel (depending on which one you specified) for the one channel from the stereo input that we specified

Links

• PulseAudio - ArchWiki
  • PulseAudio/Examples - ArchWiki