What frequency is most annoying to humans?

Related questions

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2. What are 3 types of hearing loss?
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4. At what age is hearing loss normal?
5. How quiet is space?
6. How far will a cat go from home?
7. Can you go deaf from earbuds?
8. What is the hearing range of a dolphin in Hz?
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Tags

1. #which
2. #sensitive
3. #hardest
4. #studied
5. #group
6. #between
7. #found
8. #sounds
9. #researchers
10. #range
11. #volunteers
12. #frequency