1, factory 90dB
2, on the subway 80dB
3, breath 10 dB
4, talking 60dB
5, road at night 30dB
6, library 40dB
7, air conditioner 50dB
8, piano 80dB
9, a horn of cars 100dB
10, bell at school 80dB
11, Tv 60dB
12, Barking of dogs 90dB
13, laundry 68dB
14, vacuum cleaner 67dB
15, in a supermarket 60dB
16, semi 65dB
17, in pachinko shop 80dB
18, on the bus 48dB
19, in karaoke 100dB
20, in washroom 50dB
2, on the subway 80dB
3, breath 10 dB
4, talking 60dB
5, road at night 30dB
6, library 40dB
7, air conditioner 50dB
8, piano 80dB
9, a horn of cars 100dB
10, bell at school 80dB
11, Tv 60dB
12, Barking of dogs 90dB
13, laundry 68dB
14, vacuum cleaner 67dB
15, in a supermarket 60dB
16, semi 65dB
17, in pachinko shop 80dB
18, on the bus 48dB
19, in karaoke 100dB
20, in washroom 50dB