What are sounds above 20000 Hz called?

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Tags

1. #below
2. #called
3. #above
4. #about
5. #ultrasound
6. #pitched
7. #hertz
8. #frequency
9. #frequencies
10. #humans
11. #between
12. #sounds
13. #human
14. #beings
15. #normally
16. #infrasound