On Sun, 2009-08-23 at 20:08 +0200, Ralf Mardorf wrote:
>
> On English, for international broadcasting you need different
> adjustments. But then it's important that the meter is informed about
> the analogue mixer of the sound card too ;). I guess it will become
> nearly impossible to fit a dBFS RMS meter to any VU meter outside the
> studio in the box. An external VU meter can't be replaced by one in the
> box for Linux using different sound cards.
Sure it can.
Lets say your card is aligned so that 0dbFS = +18dbu (EBU standard),
then 0Vu = +4dbu = - 14dbFS, so a software VU calibrated for 0Vu =
-14dbFs should read the same as an external Vu calibrated for +4dbu =
0Vu. If it does not then either a calibration setting is off somewhere
or one of the meters is faulty.
The key is that every stage has to have a known calibration, which is
actually fairly common with professional cards.
I agree that VU is not that useful a meter in many ways these days, but
it is arguably more useful in a production room context then a DPM as
long as there is sufficient headroom (In a production room I really
don't want to care about peak levels, and as long as my reference level
is far enough below 0dbFS I shouldn't have to.....
Regards, Dan.
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Received on Mon Aug 24 00:15:12 2009
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