create-pulse-sinksources

#!/bin/bash

if [ "$1" == "cleanup" ]; then
    pactl unload-module module-loopback
    pactl unload-module module-null-sink
    pactl unload-module module-echo-cancel
    exit
fi

# Unload and reload the echo cancel to make sure it is setup properly
pactl unload-module module-echo-cancel &> /dev/null
#pactl load-module module-echo-cancel use_master_format=1 aec_method=webrtc aec_args=\""analog_gain_control=0 digital_gain_control=1"\" source_name=EchoCancelledSource sink_name=EchoCancelledSink sink_master=alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.analog-stereo source_master=alsa_input.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.mono-fallback
pacmd load-module module-echo-cancel use_master_format=1 aec_method=webrtc source_name=EchoCancelledSource sink_name=EchoCancelledSink sink_master=alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.analog-stereo source_master=alsa_input.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.mono-fallback

# Make the Echo cancelled ones default source & sink
pactl set-default-source EchoCancelledSource
pactl set-default-sink EchoCancelledSink

# Create virtual Sink for audio that will be captured in addition to mic
pacmd load-module module-null-sink sink_name=CapturedAudio sink_properties=device.description=CapturedAudio

# Create virtual sink for combined CapturedAudio and Mic
pacmd load-module module-null-sink sink_name=CombinedAudio sink_properties=device.description=CombinedAudio

# Use loopback to feed the mic audio & CapturedAudio's monitor into the CombinedAudio sink
#pacmd load-module module-loopback source=alsa_input.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.mono-fallback sink=CombinedAudio
pacmd load-module module-loopback source=EchoCancelledSource sink=CombinedAudio latency_msec=1
pacmd load-module module-loopback source=CapturedAudio.monitor sink=CombinedAudio latency_msec=1

# Use loopback to also feed the CapturedAudio back to the speaker so I can hear it
#pacmd load-module module-loopback source=CapturedAudio.monitor sink=alsa_output.usb-C-Media_Electronics_Inc._USB_PnP_Sound_Device-00.analog-stereo
pacmd load-module module-loopback source=CapturedAudio.monitor sink=EchoCancelledSink latency_msec=1

# Now make the CombinedAudio monitor the default input
pactl set-default-source CombinedAudio.monitor

# Now for any application you want to be included in CombinedAudio.monitor source, set it to use the CapturedAudio sink
# with pavucontrol or otherwise