# Deep dive about ultra-sound (sound at frequencies above normal hearing range)

**URL:** <https://forum.podcaster.community/t/deep-dive-about-ultra-sound-sound-at-frequencies-above-normal-hearing-range/3929>\
**Category:** Workbench\
**Created:** [October 12, 2023, 4:51pm UTC](https://forum.podcaster.community/t/deep-dive-about-ultra-sound-sound-at-frequencies-above-normal-hearing-range/3929 "2023-10-12T16:51:07Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![craigconstantine](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.podcaster.community/craigconstantine/32/2322_2.png) [@craigconstantine](https://forum.podcaster.community/u/craigconstantine)\
**Post date:** [October 12, 2023, 4:51pm UTC](https://forum.podcaster.community/t/deep-dive-about-ultra-sound-sound-at-frequencies-above-normal-hearing-range/3929/1 "2023-10-12T16:51:07Z")

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This is an interesting look into recording ultra-sound.

> There’s a very cool sound in an episode of [_Here Be Monsters_](https://www.hbmpodcast.com/). The episode is called [“The Bats that Stay,”](https://www.hbmpodcast.com/podcast/hbm095-the-bats-that-stay)and in the story [Jeff Emtman](http://jeffemtman.com/), the producer, is on a hike with a couple of friends in Colorado. They’re climbing up to a cave nicknamed the Glory Hole in order to see the [Mexican free-tailed bats](https://en.wikipedia.org/wiki/Mexican_free-tailed_bat) that live there.
> 
> [https://transom.org/2019/sound-can-not-hear/](https://transom.org/2019/sound-can-not-hear/)

…and we’ve talked about some frequency-related stuff before here [HELP! wav. recording with zoomH4N has ZZZZZZZZ](https://forum.podcaster.community/t/help-wav-recording-with-zoomh4n-has-zzzzzzzz/3091)

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**Author:** ![system](https://yyz2.discourse-cdn.com/flex030/user_avatar/forum.podcaster.community/system/32/548_2.png) [@system](https://forum.podcaster.community/u/system)\
**Post date:** [December 11, 2023, 4:52pm UTC](https://forum.podcaster.community/t/deep-dive-about-ultra-sound-sound-at-frequencies-above-normal-hearing-range/3929/2 "2023-12-11T16:52:07Z")

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