Advice from DVD Sellers / Death of Optical Media

Comments

Chienworks wrote on 7/21/2015, 5:27 PM
"It is best to record digital audio with the max levels going as high as -12db to allow for some headroom. Any higher, one can easily hit distortion with unexpected loud sounds which is very bad."

While i certainly agree on the headroom advice, i guess i have a slight semantic difference when i recommend peaks be above -6dB. When i say that i mean the maximum peak that occurs, which includes the unexpected loud noises. In my mind, if you're getting stuff below -12dB to make room for louder peaks, then those -12dB peaks aren't the "max levels". ;)
VidMus wrote on 7/21/2015, 5:57 PM
They may not be max levels but at least I have the room I need, especially when a person starts banging away on the drums causing the levels REALLY jump.

I can adjust as needed in post. I cannot adjust in post where there is distortion. So I err on the conservative side.
PeterDuke wrote on 7/21/2015, 7:32 PM
How much head room to leave for sound is very dependent on the nature of the source. Only experience can help here. For a person with head-worn microphone who is an experienced public speaker you could expect much less variability than say a symphony orchestra where the music has wide dynamics ranging from pianissimo to fortissimo.

If possible, get a sample of the loudest sound to be expected before hand. Then allow say 5 to 20 dB above that. And of course record with the highest number of bits available to restrict quantisation noise on the quieter moments. Multiple microphones with different gain settings is another way to go if you don't quite know what to expect.
Len Kaufman wrote on 7/25/2015, 10:25 AM
The AOL disks made (still make!) good coasters.