Are you trying to record piano and microphone input to a single audio stream?
On Sat, Jan 16, 2021 at 9:55 AM Jan De Luyck <ml+pulseaudio@xxxxxxxxx> wrote:
Hi folks,
I'm trying to send the output of an usb-connected plantronics headset and my digital piano (using midi + fluidsynth) over google meet/zoom/jitsi/.. to the other side. I also need to hear my piano in the headset (it has no speakers)
I've based myself off of https://unix.stackexchange.com/questions/576785/redirecting-pulseaudio-sink-to-a-virtual-source and been testing all kinds of combinations, but I'm hitting a roadblock.
The commands I'm using at the moment are:
HEADSET="alsa_output.usb-Plantronics_Plantronics_Blackwire_3225_Series_1129BBD004004FF4BD2E6F2248C0D73E-00.analog-stereo"
MIC="alsa_input.usb-Plantronics_Plantronics_Blackwire_3225_Series_1129BBD004004FF4BD2E6F2248C0D73E-00.analog-stereo"
pacmd load-module module-null-sink sink_name=mix-for-virtual-mic sink_properties=device.description=Mix-for-Virtual-Microphone
pacmd load-module module-combine-sink sink_name=virtual-microphone-and-speakers slaves=mix-for-virtual-mic,$HEADSET
pacmd load-module module-loopback latency_msec=20 sink=virtual-microphone-and-speakers source=$MIC
pacmd load-module module-null-sink sink_name=silence sink_properties=device.description=silent-sink-for-echo-cancel
pacmd load-module module-echo-cancel sink_name=virtual-microphone source_name=virtual-microphone source_master=mix-for-virtual-mic.monitor sink_master=silence aec_method=null source_properties=device.description=Virtual-Microphone sink_properties=device.description=Virtual-Microphone
The effect is that I can perfectly pick the microphone "Virtual Microphone" in the conferencing apps, but only my keyboard is sounding through. My voice / mic never gets picked up.
I've tried recording using
parecord --channels=2 -d mix-for-virtual-mic.monitor /tmp/x.wav
but same story, only the piano is being picked up.
What did I miss? In all logic, this should work?
Kind regards,
Jan
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