Old thread I know but drone sounds are about the most annoying thing in the world. You wouldn't want to hear that. If you've ever tried recording audio on your phone on a windy day, it's almost unusable, now take that noise and run it through a fan. I use my iPhone for audio. I just make a video at the same time I'm flying the drone, and later strip out the audio and edit them together. To avoid wind noise I either put the phone on the ground facing down or put in inside a cloth bag or something. That cuts down on wind noise.