[BoostandEthanol]

“Some of the instruments fall below the human hearing range, only the vibrations can be felt,” feels unreal to me for some reason. I can’t imagine a vibration rattling through me without hearing something at that power.

[_kb]

It's used to rattle more than just humans with processes like DFAT [0]. Here's the NASA handbook on their use [1].

For experiences that are a little more human friendly, subsonic audio is something that's also explored more commonly in the noise art. Stefanie Egedy [2] is one artist that's been working in that space lately.

[0]: https://en.wikipedia.org/wiki/Direct-field_acoustic_testing

[1]: https://s3vi.ndc.nasa.gov/ssri-kb/static/resources/NASA-HDBK...

[2]: https://www.youtube.com/watch?v=_1Yo2hcSAbc

[tpoacher]

Apparently this is a thing that was used in old horror movies.

Subsonic music would play just before a scary encounter, creating a feeling of uneasiness to the audience without any consciously perceptible stimulous, and thus priming the audience for the horror to come.

[tenthirtyam]

The interwebz once told me that the human eye resonates at 19Hz or so, which apparently when triggered is very useful for inducing a sense of fear.

[keepamovin]

Sounds like something you’ll have to try! :)