Here’s a test of the Zoom H3-VR Mics object positioning. I used a bell sound in a quiet park.
I converted the raw A signal to Ambisonics B format in Adobe Audition using the Sennheiser Ambeo plugin, it’s free and can be used for other A format audio as well.
You can get the plugin, and others, here:
I used Adobe Premiere Pro to bring everything together, and I tested that the signal was correct using the Soundfield by RØDE plugin, it has a visualizer which is helpful to confirm if your camera and microphone are in line, and can also perform some other useful tasks.
The RØDE plugin is available here for free:
Video is from the Insta360 One X, shot at 5760×2880 LOG and rendered at 5120×2160 H.264