Best sound other than AIFF
To save space on DVD I've graduated to Dolby but using Compression set to NONE and dialog normalization set to -31, I find the sound harsh and some of the subtle tones are missing on certain music tracks.
Can anyone suggest some compromise settings - I still need the space (AIFF takes me up to 4.7 GB on DVD-R).
Quad 2.5 G5. 8 GB Ram. 250 & 500 GB Internal Drives. G-Tech G-Raid 1 TB Mac OS X (10.4.6) FCP 5.0.4 (FC Studio). Photoshop CS2. Sony HVR-Z1E
You may already know this stuff, but I'll post it in case you don't.
When you're setting the Dialog Normalization, you're setting a number that is entered into a math formula, not a final level. On DVD titles, you're interested in making the average dialog level equal across all tracks. Explosions, train whistles, soft breezes through the trees, can vary, but average dialog level is supposed to be equal. And that level should be -31dBFS (deciBel Full Scale).
The way to accomplish that feat is to enter the number that represents the average voice level in the source file. If the source audio is coming from FCP, that number might be -12dBFS.
That sets a Control Parameter, a flag of sorts, that the playback device uses for playback. It tells the player to attenuate the audio level by this formula:
-31dBFS + DNV dB
So, in the above example, the formula would result in the playback device attenuating the audio by:
-31dBFS + (-12) = -19dBFS
This would result in an average dialog level of -31dBFS.
Make sense?
If you set dialnorm at -31dBFS, then you are telling the player to NOT attenuate the audio at all from the levels set in the source file. THe risk there is that some peaks might be above 0dBFS, which is a Bad Thing.
As for the Dynamic Range Compression, normally you should set that at None. The danger of setting anything else is the risk of possibly creating an unappealing volume pumping. Dynamic Range Compression will try to even out the difference between the highest and lowest volumes in your audio file. But it is not data compression.
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