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Originally Posted by Incoherent
Although of course I am not a sound engineer. It is probably 26dB above ambient of 28dB (dBA? is that what this means sound guys?)
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No
When we are talking about dB, it is the log of a ratio between sound intensity and the threshold of human hearing.
I(dB)=10*log(I/I(0))
Where I(0) is usually 10^-12 w/m^2
dB(A) is a weighing of sound measurements, the most comon in fact, where sounds around 3k-4kHz are measured at around the actual sound level. Sounds at frequencies outside of this area however are measured at values way below the actual.
The dB(A) weighing does not follow the perceived loudness of the human hearing, and does therefore not reflect perceived loudness of a system. However almost all values you'll see on computer components will be measured using the dB(A) weighing.
That being said, their values still puzzle me. As does almost all sound level values for computer components, don't get me started on thermaltake. This one is just alot more blatantly off than most.