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dBU and dBV recording

Started by Gene Goff June 30, 2009
2. dBU and dBV recording
Posted by: "Rohith MP" r...@lntemsys.com mp_rohith
Date: Sun Jun 28, 2009 8:59 am ((PDT))

Rohith,

0 dBu = 20 * log10( V / 0.7745 ) and
0 dBV = 20 * log10( V / 1.0 ).

+4 dBu = 1.227 V = professional level coming out of a mixing console for example.
-10 dBV = 0.316 V = consumer level coming out of a CD player for example.

When you switch your IO box to +4 dBu, it is expecting a nominal 1.227 V input.
When you switch your IO box to -10 dBV, it is expecting a nominal 0.316 V input which is then being internally amplifyed-up to give the same signal level before A/D conversion. So yes to: "Is -10dBV recording has more gain when compared to +4dBU gain?"

Gene Goff
Hello,

Is there any relation between dbu and db/dbV.

I have IO box with option of Hi-Gain, +4dBu gain and -10dBV gain.
Basically these are hardware switches present in the IO box.

What does +4dbU recording actually mean?

What does -10dBV recording actually mean?

While performing recording of a file, I found that @ -10dBV recording, the
recorded file used to get clipped, what might be the reason?

Is -10dBV recording has more gain when compared to +4dBU gain?

Thanks in advance

Rohith M P