Bitwig has no built-in multichannel audio support and so it's not possible to do any exportable Ambisonics music. On Windows, there's also very limited DAW choices to work with Dolby Atmos too. This experiment (messing around) attempts to see what is possible in Windows in terms of running Bitwig and producing a Dolby Atmos render without going down the Mac OS route and buying into Ableton, Pro Tools, Nuendo, Pro Logic etc.
By installing ASIO Link, it's possible to create upto 64 channels of routable audio. By routing each Bitwig stereo channel to an ASIO Link channel, this input can then be brought into DaVinci Resolve Fairlight Dolby Atmos Renderer to form the Dolby Atmos Bed & Objects. By also creating a monitoring bus outside of the Dolby Atmos Renderer, we can also take the 7.4.1 Dolby Atmos mix and route it into dearVR Pro VST plugin, where we can experiment with binaural headphone listening. dearVR Pro appears to be able to take the 7.4.1 audio input directly too, which I've not seen is possible in other plugins before so flexibly taking it to Binaural, Stereo and even able to monitor as 7.4.1, although It doesn't seem to directly translate the Dolby Atmos Panner built into DaVinci Resolve Fairlight though but is really quite good overall.
Surprisingly, the ASIO Linke audio and latency is workable live and one of the channels is a live synth playing in realtime with no latency to worry about. DaVinci Resolve Fairlight provides some MTC synchronisation, but I couldn't get it to work with Bitwig, which is a shame. What seems to happen in a live unsynced setup is the Dolby Atmos Renderer Bed and its Objects are not quite held in tight sync with each other and without MTC/MCI/SMTPE sync, there's nothing to stop latency affecting the timing of each audio stream.
OBS is taking quite a lot of system resources recording this, so there are some audio glitches. In reality, I am hoping make the music in Bitwig as I hear it live through Dolby Atmos & then would probably export the stems into DaVinci Resolve for final Atmos master file rendering. It's good enough to edit live though.