23 Jan
2014
23 Jan
'14
4:07 p.m.
I'm trying to work out how K-system metering works in relation to the new LU
R128 standard, and can't really find anything definitive on it.
R128 standard sets the target volume at -23 LUFS, but is that just for TV
broadcast, or is that for everything? That is a tremendous amount of dynamic
range available if that applies to radio/music broadcast as well.
I guess my question is in 2 parts:
Are there different LUFS targets for different material, similar to how K-System
has different dynamic ranges for different material? If so, what are they?
Is the target LUFS level(s) what I use when calibrating 85 dB speaker levels,
or is that something different.
-Reuben
23 Jan
23 Jan
4:41 p.m.
I don't have a technical answer to give you, but if the recommendation
is to work at around -23 dBFS RMS, I would agree that this is
sensible.
If you establish your "0 dB" point at -23 dBFS, you have an amount of
(digital) headroom that's approximately what you would expect in a
traditional (analog) mixing desk -- more than 20 dB above your "0 dB"
point before you completely run out of voltage rail.
The only problem is that most DAWs use a default style of waveform
display which makes it hard to even tell there's a signal at that
level.... you have to get up to about -10 dBFS to be able to see the
shape of the signal's dynamics...
Thanks,
Bill Gribble
On Thu, 2014-01-23 at 07:07 -0800, Reuben Martin wrote:
I'm trying to work out how K-system metering works
in relation to the new LU
R128 standard, and can't really find anything definitive on it.
R128 standard sets the target volume at -23 LUFS, but is that just for TV
broadcast, or is that for everything? That is a tremendous amount of dynamic
range available if that applies to radio/music broadcast as well.
I guess my question is in 2 parts:
Are there different LUFS targets for different material, similar to how K-System
has different dynamic ranges for different material? If so, what are they?
Is the target LUFS level(s) what I use when calibrating 85 dB speaker levels,
or is that something different.
-Reuben
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7:31 p.m.
On Thu, Jan 23, 2014 at 9:41 AM, Bill Gribble <grib(a)billgribble.com> wrote:
I don't have a technical answer to give you, but
if the recommendation
is to work at around -23 dBFS RMS, I would agree that this is
sensible.
If you establish your "0 dB" point at -23 dBFS, you have an amount of
(digital) headroom that's approximately what you would expect in a
traditional (analog) mixing desk -- more than 20 dB above your "0 dB"
point before you completely run out of voltage rail.
One of the things I'm not sure of is if I actually master things to the
R128 level. It may be that I go ahead and use K-System-14 (or 20) for the
mastering part, and that the R128 level is just a reference for how the
levels will be normalized for broadcast usage.
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Bill Gribble -
Reuben Martin