Microsoft made a -23 decibel room, but how does that work exactly? Once something hits 0 decibels how exactly can we measure it getting more quiet than that?
In: 24
Decibel is a logarithmic scale not a linear scale. A change by 10 dB is the power of a 10x, but that is true for all changes of 10dB. So a change of 20 dB it two changes of 10 so the power is 10x 10 = 100 times higher.
It is also true if you go from 10dB to 0dB it is a power change from 10 to 1 not to zero. You define the scale at 0dB =1 power with the unit you use.
So -10dB is 0.1 , -20dB is 0.01 you need to reach – infinity dB to reach 0 powered.
That is for power if you look for amplitude it is a factor 20 dB which is a change of 10x except for that everything works the same.
The result is -23 dB is around 1/100 of the reference in the power scale or 1/10 the reference in the amplitude scale.
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