Any ideas?

any programs/formula etc?

Cheers,

Dan

 

anybody?

 

dBu (also, confusingly, called dBm) is power, calculated in dB, referenced to 1 mW at 600 ohms (equal to 0.775V).

dBa is weighted absolute noise power, calculated in dB referenced to 3.16 picowatts (-85 dBm), which is 0 dBa.

To get dBa from dBu, add 85dB. To go the other way, subract 85dB.

Note that this is not strictly 100% accurate, as dBa is a frequency weighted measurement, and dBu (dBm) is not, but it is correct at 1kHz.

 

Nice one - thought as much but needed confirmation

Dan

 

I've managed to get hold of a proper dBa meter, but thanks anyway