does this suffice? - https://youtu.be/JKBBVgR991s

This shows comparison at different pitches and times. There is really no "slow mo" basically there is "no" conventional sound. Sound (or any wave) has 2 features (3 but ignore thee third, that is phase) amplitude (how strongly is something oscillating, imagine a person jumping 1 meter, compared with a man jumping 10 meters) and frequency (how fast, imagine a person jumping once in a second, and a person jumping 10 times in a second). What we reocrd is the oscillation frequency of the literal space time (basically we measure this by interferrometry, consider it like a very precise scale or ruler), and if we increase the amplitude a lot, we get something audible like this. In space, if you were next to them colliding, your whole body will be vibrating like this. Now I am not a biologist, so this would need fact checking, but If your whole body is vibrating, you would not really hear anything (I think our natural hearing is done relative to our body, in this case, there would be no relative motion). And bigger thing is, the amplitude would be low, this is because, these oscillations are incredibly small (consider of the size of a proton, which is 10,000 times smaller than a atom)