videos in AudioSet
A list of about a million ten-second YouTube clips, each labelled with the sounds in it, that Google published in 2017. Labs use it to train and test general audio and music models.
Including Pirate Radio on a Shortwave Crystal Set, HAARP Woodpecker and other sounds 2750- 4500KHZ, Weird Bomber Noise on shortwave 4310khz? -4400khz 05:05utc 3/29/11