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 Gold, Silver & Extremely Iffy CTX Signal With Live Digs! - Metal Detecting with Minelab CTX 3030 #9, Silver live digs, old toy cars, and goats! Metal Detecting with the CTX 3030 #4