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 Engineering Newswire 159: The World's Most Efficient Ion Engine, Kickstarter of the Week: Fan Powered Flying Bicycle, Engineering Newswire 40: First Autonomous Flight for Airborne Wind Power