I can't tell if some people in here are taking the vegan jokes seriously or are just playing along.

It literally says in the video that it's a device used to measure micro voltage fluctuations. The plant isnt making that sound at all, the device outputs the measurements as sound.

Gross

It's disgusting to eat plants. Vegans need to find a more "humane" diet or I will always look at them as plant killers

Says who? Plants are telling me right now that you don't know them like that