Quiet, as if whispering; ,can be interpreted in this way, with the sound of the refrigerator to start almost
According to scientists to determine, the noise generated by the television set, home theater, combined stereo, etc., up to 60 to 80 decibels; washing machine for 42 to 70 decibels; refrigerator for 32 to 50 decibels. And the relevant national standards, the environmental noise in residential areas, can not exceed 50 decibels during the day, the night should be less than 40 decibels.
Volume Analogy
130 decibels Jet takeoff sound
110 decibels Propeller plane takeoff sound
105 decibels Permanent damage to hearing
100 decibels Pneumatic drilling rig sound
90 decibels Noisy bar ambient sound
85 decibels and below Does not damage hair cells in the cochlea
80 dB Noisy office
75 dB Human ear comfort limit
70 dB Ambient street sounds
50 dB Normal conversational sounds
20 dB Whispers