This is interesting, and I'll be curious to see it presented:

"From hard drive to over-heard drive: Boffins convert spinning rust into eavesdropping mic"

https://social.mikegerwitz.com/url/72535

I used to stare at the little hole in the tops of the HDD enclosures when I was younger and wonder how slight of pressure variances could be detected by the hardware, wondering how loud I'd have to scream at it (or if I'd have to put my lips on it and hum) to have a detectable level of vibration. I guess that answers my question.

The bottom of the article links to a video of prior research on the topic, but I don't have the time to look at it right now.