Videos
Presentation of Functions With/Without--Grand Piano Play
Chopin Nocturne Op. 9-2
Debussy Clair de Lune
Chopin Etude Op. 10-3
Sound Level
| 90dB | Dog barking (5 meter), Noisy factory |
|---|---|
| 80dB | Inside of a car of subway or railway, piano playing |
| 70dB | Audio listening (one meter from speakers, night time), noise of downtown |
| 60dB | Quiet car (inside), regular conversation, NighTONE |
| 50dB | Quiet office, air conditioner running |
| 40dB | Urban area night time, inside of a library, residential area daytime. |
| 30dB | Suburb night time, whispering |
