4 ms·Imagine the potential noise reduction! Also cool seeing my university on HN :)by dt3ft 4y agoImagine the potential noise reduction! Also cool seeing my university on HN :)deleted 4y ago[deleted]bilsbie 4y agoThey should model them on owlsqwertox 4y agoI fully agree. These drone propellers are incredibly noisy at those high frequencies, it's really disturbing.