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 Octatrack Know-How #9 オーディオエディター(チュートリアル), Octatrack Know-How #1セットやプロジェクトのつくり方 (チュートリアル)