I found the docs on how Qubes gets audio from and to VMs. https://www.qubes-os.org/doc/audio-virtualization/ and I have a pacat-simple-vchan process running (in dom0) for each vm, I have the UNIX sockets in dom0 as well, so everything looks reasonable there. In the VMs, I can see pulseaudio running, and audio played in a VM comes out the speakers, so audio transmission seems to be working fine in that direction...

I've given up for now and am using my Acusis Echo-Cancelling Microphone Array, which is a USB device that passes through just fine (just like all my other USB devices).

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BTW these Acusis microphones are absolutely phenomenal! I paid $100 each for the ones I have now, and I'd pay the $200 price from the new company that's manufacturing them in Germany! They pick up voices and music, ignore white noise like fans and never have ANY echo or feedback.

Unfortunately the only way to get them now is to order at least 50 of them, and I don't have $10,000 USD to spend to stock microphones, no matter how awesome they are.

I tried getting a group buy together last year, but I could only reach about 5 people who were verbally committed to buying one. So unless nostr has a lot more people who are interested, we're all out of luck.

It's difficult to truly convey the joy of never having the problem of "I'm getting some echo" when everyone is using these. It's nothing like software noise cancellation which kinda filtered things out, if there's not too much lag.

They are not open source hardware, but you can modify, compile and flash the firmware onto the microphone itself. So it's still hackable.

nostr:nevent1qqsrj068n28zl03rdwvvaxt60506xw94qj8rmjlwcax08d0pvnnftuqpz3mhxue69uhhyetvv9ujumn0wd68ytnzvupzp5cw4x82vh5487g6hylkkv82284n83gxlp75nasq5yu6auq249g3qvzqqqqqqygwvp37

thx for the update. now i get your setup. glad you've got a fallback mic that works as it should. what was the one that was giving you trouble?