There isn't a bow around that is anywhere near the speed of sound.

there was something written about this. with a decible meter they found that the bow at 15 or 20 yrds was really quiet but the arrow got up to like 92db or maybe more. they are more likely jumping the arrow but can jump either. i have an old realtree video where chuck adams talked about deer jumping the string and he had a guy figure it out and youd have to shoot over 700fps for a deer to not be able to jump the shot at i think 20yrds.

im a feather fan 100percent but they are in general loud i can hear mine when i shoot them sometimes but i got crappy amg feathers last batch and my gateways were alot quieter im sure of it.

The arrow is definitely not traveling the speed of sound, but it is traveling from most bows at 2-300fps so the deer definitely does not hear what you hear as the arrow whizzes by, that is unless you miss!
If truth was known, jumping string is probably caused by a combination of both bow and arrow noise. I've got a solution for string jumping - it's called the .270 Winchester! Just kidding. Take close shots at calm deer and you won't have a lot of trouble with string jumpers.

i also thinkl they hear the arrow

I think w/ todays new bows most of the time the arrows are much louder than the actual bow. I have had some broadheads that whistled like a train