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
decibels are often used to describe relative measurements or changes in measurements as well as absolute measurements (where a fixed value is 0dB). In which case it could be that there is 23 dB of loss (~200x smaller) of a signal from the outside of the room to the inside of the room. It could be that there is 23 dB of loss from a signal in the center of the room, bouncing off the walls and measured again at the center of the room.
The decibel scale is logarithmic so a change of 10 dB represents a doubling or halving of sound intensity.
That being the case 0 dB is half the sound intensity of 10 dB and -10dB is half of that and so on.
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