Kevin Doren

Most USB mics will play the live sound from your mic through your headphones. In Jamulus you want to listen only to the feed from the server. Cheap USB mics can't do this. Except this one, which was apparently meant to sell at a high price but has been marked down (might be limited to stock on hand). In US you get free shipping if you buy 2. It's quite good, especially considering the price: https://www.parts-express.com/Talent-USB-PRO-Professional-USB-Microphone-with-Headphone-Output-Mix-and-Vo...

For jambox-specific issues, I suggest you use github discussions/issues in the Jambox repo: https://github.com/kdoren/jambox-pi-gen/discussions (I'll be sure to see/respond if you put them there). Jambox 1.3.0 (beta coming soon) has "pimixer" on the desktop, it's the easiest way to get to internal controls of USB audio devices. You can install on 1.2.0 with "sudo apt install pimixer", and launch with "pi-menu" -> "preferences" ->"Audio device settings". However I do see your point about needing a...

Pi3 and P4 have different power connectors, so I normally run Pi4 with a USB-C power supply, and Pi3 with a mini-USB power supply. But then it's not valid to say "Pi3 has more noise", because maybe I run my Pi3's with noisier power supplies than I use on Pi4. So I ran a test using same supply on Pi3 and Pi4 - a battery, which is the cleanest supply possible. I swapped out only Pi3 vs Pi4. and their USB power cables. And Pi3 vs Pi4 didn't make much difference. It must be that the power supplies I...

Pi3 and P4 have different power connectors, so I normally run Pi4 with a USB-C power supply, and Pi3 with a mini-USB power supply. But then it's not valid to say "Pi3 has more noise", because maybe I run my Pi3's with noisier power supplies than I use on Pi4. So I ran a test using same supply on Pi3 and Pi4 - a battery, which is the cleanest supply possible. I swapped out only Pi3 vs Pi4. and their USB power cables. And Pi3 vs Pi4 didn't make much difference. It must be that the power supplies I...

Pi3 has very bad filtering on the USB power it supplies, and some USB audio interfaces have very poor filtering on their USB power inputs to protect their sensitive mic preamps. That's a bad combination. There do exist "USB Noise Isolator" devices which allow you to power your USB audio device from a separate power supply, while filtering noise out of the signal wires from the RPi. Mostly they are kind of expensive, and you also need a second power supply, cheapest one is from Nobsound: https://www.amazon.com/gp/product/B07GB4CQQ3...

I've never tried that (maybe someone who has can chime in here). I think something like this is possible by creating alsa pseudo-devices. But that's likely to be rather complex and painful to get working, and in the end may introduce more delay than you can tolerate. My advice would be not to go there. If multiple inputs is what you want, I'd suggest running them through an analog mixer before your USB audio interface. That's simple, easy to control, and adds no delay.

iPad supports bluetooth mouse... I had one lying around, and you inspired me to try it. It works surprisingly well! https://support.apple.com/en-us/HT211009

What exactly do you mean by "blocking noVNC"? I use an iPad with jambox when I play, it works fine. In fact that's why the VNC screen size defaults to 1024x768, it's to fit an iPad. I normally use Safari browser but I've tried it with Firefox and Chrome also. Mine is a couple of years old, how about yours?