Cosmic volume -254dB absolutely silent

0-20 dB very quiet, almost feel;

20 -40 decibels quiet, like a whisper;

40 -60 decibels in general, ordinary indoor conversation;

60 -70 decibels noisy, detrimental to nerves;

70 -90 dB is noisy, nerve cells are damaged.

90 -100 decibels noisy intensified, hearing impaired;

100 -120 decibels unbearable, stay for a minute that is temporarily deaf.

More than 120 decibels are deaf or deaf