| 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 6000 Hz | |
| rustling
leaves |
chirping
bird |
||||||
| 0 dB | |||||||
| 10 dB | dripping faucet | ||||||
| 20 dB | small waves
on a beach |
whispering | |||||
| 30 dB | v | p, h, k | ticking
watch |
f, s | th | ||
| b, d | u (oo) | sh, ch | g | ||||
| 40 dB | i (ee), j | z, m, n, b, d | a, o | talking | |||
| ng | r | ||||||
| 50 dB | ay, l | lecturing | |||||
| 60 dB | air conditioner | baby crying | |||||
| 70 dB | |||||||
| 80 dB | dog howling | piano | |||||
| phone | |||||||
| 90 dB | |||||||
| 100 dB | lawn mower | buz saw | |||||
| 110 dB | truck engine | leaf blower | helicopter | ||||
| 120 dB | rock concert | jet plane |
