VideoByDave (vfwTech.com)
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Formerly "Avid Liquid" of Colorado

 

 


 

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  db Settings                                                                                               



 

Q. This may be a dumb question but after delivering pgms with audio peaking -12db we're faced with a request for audio content to be delivered at -6db.

Could you pse verify what it should be?

A1. You can run it to 0dBFS without distortion. Deliver at whatever is asked for by the client. If the client has no preference and it's a final mix, send it at -0.1dB. Peak values don't really influence RMS levels, so it has nothing to do with loudness. 0dBFS (or -.1) will give you the best S/N ratio.

Emmett

A2. -6db is industry standard ... I would use the hardlimit function depending on the gain of your file amplify by 1 to 6 db with a peak limit of -6db ........ WILLIE

 

Q. What is the default setting for a signal tone to be included in a broadcast tape.

A. 1000Hz -9db tone. - Ususally it appears under a SMPTE Color Bars.

 
Q.
A. I love Mix-Automation for this. Play the TL and in RT mix the audio across multiple tracks. even if its not perfect, you can easily go back and make a few small mods where needed.

 Then if the entire audio  (or parts) need to be raised or lowered you can Select all the clips, right click, and use "Adjust Audio Levels"  and globally raise/lower. It even gives you the Max and Minus for the global range.  Brad Swenson
 

A2. I open the Audio Tool (click on the fader/meter icon at the lower right of the Liquid screen) and watch the level as I play each clip.  Then, I right-click on the clip and select "Adjust Audio" and set the right level based on the peaks and valleys on the meter.  Doing that for each clip individually is about the easiest way I can think of unless you really need to do a continuous mix as Brad mentioned.  You can select multiple clips and use Adjust Audio on all at once, too.
 

I'd use the Maximizer if I were to choose an effect in Liquid.  The Leveler when I've tested it took out all the dynamics (or practically all).  The Maximizer acts more like a limiter and gives more natural results.  You could try both to see which you like better.

There are several ways to handle this problem and each one has advantages and disadvantages for any given situation.  You might even want to use a combination of methods for some cases.  Scott Myers