Listen to the threshold of hearing
How loud is the threshold of hearing?
The threshold of hearing is about 0 dB. The quietest sound a young, healthy ear can detect at 1 kHz (20 µPa).
That is quieter than normal conversation (60 dB).
Can it damage your hearing?
No – 0 dB is well below the 85 dBA level at which prolonged exposure starts to risk hearing damage.
How sound level changes with distance
Decibel figures always depend on distance. For a small source in open air, every doubling of distance lowers the level by about 6 dB; indoors, reflections reduce that drop. Use the sound-vs-distance calculator to estimate the level where you are.
Sounds as loud as the threshold of hearing
More recordings elsewhere
- Suburban Fireworks (New Year's Eve 2016) - Everett, Washington by Marth8880 – CC BY 4.0 (freesound)
- room-tone one man calm 1103 AM 240812_0895 by klankbeeld – CC BY 4.0 (freesound)
- room-tone one man on 5m 1055 AM 240812_0895 by klankbeeld – CC BY 4.0 (freesound)
- room-tone one man calm 11 AM 240812_0895 by klankbeeld – CC BY 4.0 (freesound)
- room-tone one man calm 1057 AM 240812_0895 by klankbeeld – CC BY 4.0 (freesound)
Frequently asked questions
How many decibels is the threshold of hearing?
About 0 dB.
Is the threshold of hearing louder than a jet engine?
No – a jet engine at takeoff is about 140 dB at 30 m, while the threshold of hearing is about 0 dB.
How are these levels measured?
With a sound level meter, usually A-weighted (dBA) to match human hearing. Published figures depend on distance and conditions, so treat them as typical values.
Sources & credits
- Typical values compiled from CDC, NIOSH and ASHA noise charts
- Silence and Fun by Charles E. Mullen (1904) by C.E. Mullen. – Public domain