What is the lowest level of sound a human can hear?
How loud must a sound be (in dB) before a human can hear it?
Answers:
The threshold of hearing is assigned a sound level of 0 decibels
Here you can find a table with different levels.
http://www.glenbrook.k12.il.us/gbssci/ph.
20 Hz
man can hear a low frequency sound of 20 Hz and a intensity of 10^-12 watt/m^2
The decibel scale defined 0dB as the limit of human hearing.
Do electricians doit till it Hz?
=kizzy=
The lower basses are about 15 to 20 Hz, depending on the quality of the personal ears.
With a lower frequency the eyes can follow the movement of a loud speaker !
Th
It is 10^ (-12W ). this is the absolute threshold level of the human ear
The audible frequency range is 300Hz to 3kHz.Outwith this range at the extreme ends is Extremely low frequency up to extremely high frequency with some in between LF,MF.HF,VHF,UHF.etc.
So the wave form your talking about within the audible frequency range all depends how powerfully it is transmitted which can either be measured in Watts or DB's.So It is any transmission within the audible range all depends how good your hearing is.I'm obviously talking about the human audible range!
minimum of 0 db is equal to 20hz(mythbusters rocks)
Ignore all the references to 20 Hz
O dB, the threshold intensity for human hearing is accepted as 10^-12 W/m^2.
It's a logarithmic scale, so 1 (=10^0) W/m^2 is rated as 12 B or 120 dB.
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Answers:
The threshold of hearing is assigned a sound level of 0 decibels
Here you can find a table with different levels.
http://www.glenbrook.k12.il.us/gbssci/ph.
20 Hz
man can hear a low frequency sound of 20 Hz and a intensity of 10^-12 watt/m^2
The decibel scale defined 0dB as the limit of human hearing.
Do electricians doit till it Hz?
=kizzy=
The lower basses are about 15 to 20 Hz, depending on the quality of the personal ears.
With a lower frequency the eyes can follow the movement of a loud speaker !
Th
It is 10^ (-12W ). this is the absolute threshold level of the human ear
The audible frequency range is 300Hz to 3kHz.Outwith this range at the extreme ends is Extremely low frequency up to extremely high frequency with some in between LF,MF.HF,VHF,UHF.etc.
So the wave form your talking about within the audible frequency range all depends how powerfully it is transmitted which can either be measured in Watts or DB's.So It is any transmission within the audible range all depends how good your hearing is.I'm obviously talking about the human audible range!
minimum of 0 db is equal to 20hz(mythbusters rocks)
Ignore all the references to 20 Hz
O dB, the threshold intensity for human hearing is accepted as 10^-12 W/m^2.
It's a logarithmic scale, so 1 (=10^0) W/m^2 is rated as 12 B or 120 dB.
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