I read up a little about dynamic notch filter. I did a noise test but that was with the 10’’ props. I don’t know if there would be a difference with the 16’’ props.
I will attach a big box (with 2kg of weights in it) to the drone when the new motors arrive so that I can first test it safely.
I don’t know how I can test it safely with ropes. I would need a way to pull the ropes back as the drone comes down.