We develop shrouds for UAV / drone propellers which have acoustic properties. The propellers and motors constitute the majority of the noise, we are reducing the propeller noise through shrouding, which reduces the turbulence on the propeller tips. The shrouds have innovative acoustic materials incorporated that specifically absorb noise within the speech ranges. Our shroud also protects along with the reduced noise and with it, we can also make sure the efficiency goes up enough that it counteracts the weight of the shroud, so you don’t lose flight time. We are developing solutions to reduce motor noise as well as provide on board audio recording, active filtering (of remaining noise) and transmission.