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Title: Dialog normalization and R128
Post by: rollow on 2012-05-10 23:59:51

When producing stereo ac3 for general broadcast, normal practice for me is to apply dialog normalization to ac3 output, ranging from -17 to -24 db depending on requirements.
How does this process relate to also producing R128 compliant audio? Can I just safely process my R128 compliant source to ac3 with dialog normalization?

Title: Dialog normalization and R128
Post by: 2Bdecided on 2012-05-11 10:21:49

EBU R128 compliant audio will sit at -23dB.

In the AC-3 encoding, set dialnorm to 23 (or -23 - depends on the UI - the actual stored values are always positive, and always mean negative!) and all will be fine.

See here for more...
http://www.videor.com/imguser/Redaktion/Br...epaper_axon.pdf (http://www.videor.com/imguser/Redaktion/Broadcast/whitepaper_axon.pdf)

Cheers,
David.

Title: Dialog normalization and R128
Post by: rollow on 2012-05-13 19:53:35

Thanks, that was very helpful.

HydrogenAudio

Hydrogenaudio Forum => Scientific Discussion => Topic started by: rollow on 2012-05-10 23:59:51