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How can I create a virtual output in PulseAudio?
Not sure how to add multiple loopback devices. A little complement to @mxc’s answer, as he said you can use the module-null-sink as a virtual output with: This creates a new sink (“virtual output”) that you can use for your application.
How to monitor specific output in PulseAudio app?
Alternatively, you can use pavucontrol to do this: make sure you have set up the display to “All input devices”, then select “Monitor of [your sound card]” as the recording source. Monitor specific output. It is possible to monitor a specific output, for example to stream audio from a music player into a VOIP application.
How is PulseAudio used in multiple audio sources?
PulseAudio allows for simultaneous output to multiple sources. In this example, some applications are configured to use HDMI while others are configured to use analog. Multiple applications are able to receive audio at the same time. (aplay is from the alsa-utils package.)
How to set default output sink in PulseAudio?
Set the default output sink 1 The numbering of sinks is not guaranteed to be persistent, so all sinks in the default.pa file should be identified by the name. 2 For quick identification at runtime (e.g. 3 To avoid unnecessary overriding of 100% normal volume it is better to use alternative utilities for managing of sound.
When to use null sink in PulseAudio module?
The default policy in PulseAudio is to only allow exclusive access if nothing else is currently using the sink. With this module, all the existing streams are muted (by being re-routed to the null sink) when a passthrough stream comes in, allowing the passthrough stream to exclusively use the sink.
How to create a PulseAudio card for an ALSA card?
Creates a PulseAudio card for an ALSA card. The “device_id” argument is mandatory, it tells PulseAudio which ALSA card to use. Name for the PulseAudio card. Extra properties to be stored in the card’s property list. Name to be used by the card’s sinks.
How does module-udev-detect work in PulseAudio?
Let module-udev-detect look for the supported cards and then select the profile you want, that will make the right sinks show up. In addition to the general device driver options described above this module supports: The ALSA device to use. (defaults to “default”) The desired fragments when opening the device. (defaults to 12)
How to redirect PulseAudio sink to virtual source?
Create a sink which takes application audio and sends it to our speakers and the special mixing sink we just created (replace alsa_output….analog-stereo with your sink’s name, see pactl list sinks short .) Loopback our actual microphone to our mixing sink (replace alsa_input…analog-stereo with your source’s name, see pactl list sources short .)
How to send audio to a Virtual Microphone?
To send application audio to your Virtual-Microphone, in pavucontrol, set your application’s sink to Mix-for-Virtual-Microphone (to only send it to the virtual microphone) or to “Simultaneous output for Mix-for-Virtual-Microphone, …” to send it to the microphone and your speakers.
How to redirect sound to a virtual source?
I’m trying to redirect the sound of a program (in my case, ffmpeg) to a source, so I can play the sound in question in Zoom (video conference software). The classic way of doing this would be to select, as a sound source in Zoom, the SinkName.monitor source, since every sink comes with a monitor.
How to redirect a null sink to a virtual source?
I created a null sink, a null source, and a loopback, but upon opening pavucontrol, I understood that I probably got it backwards; a loopback appears to be used to redirect a source to a sink, not the other way round (pavucontrol says, under Playing: “Loopback of MySource on […] MySink”, MySink being the value of the dropdown list on the right).