I've personally been using a nifty piece of software called VB-Cable, which basically does the same thing. Creates a software audio output as well as an audio input, which you can then use across different applications.
I personally use it to route my studio mic input through OBS, where I apply some filtering, to then be able to use it with different VoIP software.
Do you need additional software for this? Can’t you use OBS as a webcam[0] and take its audio source? (I haven’t tried, but that’s how I’d approach it if I was going to).
Unfortunately, no, OBS handles video only, no audio comes through the camera. It's really frustrating, I have wanted to do some more complicated audio setups on a Windows PC (specifically bridging two calls on different platforms together, I know the latency would be bad), but you have to use the VB CABLE proprietary driver, of which you can only have one for free, or try playing with Voicemeeter (same company with old, proprietary software). I have tried Synchronous Audio Router, but I couldn't get it to work after hours of pressing buttons.
On Mac, I can just buy Rogue Amoeba software, and on Linux, I can just run some commands or download a GUI to route audio around however I want.
Just last week I was geeking out at Jeff Gluon's home lab implementation, and he released a nice video walking through his power monitor, which also uses Grafana.
