[LAD] audio meters nostalgia
mista.tapas at gmx.net
Mon Apr 14 17:20:08 UTC 2008
On Sunday 13 April 2008, Fons Adriaensen wrote:
> On Sun, Apr 13, 2008 at 10:04:51PM +0200, Florian Schmidt wrote:
> > On Saturday 12 April 2008, Fons Adriaensen wrote:
> > > The PPM is a pseudo-peak meter. It will indicate 80% of
> > > the steady-state value for a 10ms burst, and fall by 24db
> > > in 2.8s. Each scale division (1..7) represents 4dB. It is
> > > calibrated to indicate '7' (+12 dB on the EBU scale) for
> > > 0dB FS.
> > Excuse my ignorance, but what's a steady-state value?
> The value it would show for a continuous signal of constant
> amplitude. So for a 10 millisecs burst the meter will
> indicate 2 dB below the true amplitude. This defines the
> rise time.
Thanks for the explanation..
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