Creepy cicadas, ticking clocks and jump scares: How frightful films conjure terror out of quiet
Discussion
(theconversation.com)
It is fascinating to me that you mentioned "Hereditary", as that's the flick I had in my mind as "excellent jump scares" while writing the comment. There's a scene early on - possibly the one you’ve mentioned - that soundlessly had the hair on the back of my neck on-end. Beautifully done.