[alex]

Il 20/11/2011 18.04, Roy W. Rising ha scritto:
wrote:
Il 20/11/2011 14.40, MarkK ha scritto:
I'm looking for a set of rule of thumb helping me to realize a video
soundtracks. I'm mostly interested in LEVEL rules in order to achieve
a standard product, not too different souding from the average, in
terms of loudness. How the movie sound level do relate to the 1kHz
tone in the color bars section and things like that.


Any help?

Alex, I would say before you get a useable answer, you need to refine
your question.

There are at least 3 stages of production.

Are you talking about levels:

1) during the initial recording, or
2) during editing onto the finished product, or
3) when the finished product is transmitted over the air or cable to
the viewer.

The answer will be very different for each of these three cases.

Mark





thanks, i'm interested in the final step in producing a video with good
levels to be fully compatible with broadcast with a little or no change
to be made.

A kind of premastering step in audio!
I need do know clearly the relationships, if any, between the audio
program and the 1khz reference tone.

I would like to know aspects about your point 2 and 3!

regards alex

Get a pair of real VU meters, set Zero VU at 20 dB below Digital Zero for 1
KHz tone, keep it out of the red. That's what I did for 38+ years of TV
sound work ~ Pre- and Post Production, In the Studio, and Live on Air.

thanks for the answer, Roy

This only prevents overs but doesn't say anything about loudness.
Even following this rule i'm still able to produce a very wide loudness
range and the program may appear too loud or too weak compared to other
tapes.
What i need is to understand where is the common "average" loudness for
a soundtrack and how to achieve it.
I think that should be a relationship between the program loudness and
the 1kHz tone level, otherwise will be pretty stupid to put the same -20
tone on every digital video tape which is completely unrelated with the
real sound on the track.

alex