Extracted CD audio parameters?

megabit wrote on 9/21/2008, 12:13 AM

Can CD audio be extracted in anything better that 16/44.1 ? I have a project set to 24/48, but can only extract from CD in Vegas default audio settings...
Of course, it's possible that the audio indeed IS 16/44.1, but I thought it should be better. Please enlighten me!

Comments

PeterWright wrote on 9/21/2008, 12:24 AM

Piotr, 16/44 IS what audio CDs are made of, so that's what will be extracted - you could try resampling to 24/48 in Sound Forge or a similar app , but that may end up no different in quality from what you'll get when you render your video project.

John_Cline wrote on 9/21/2008, 12:26 AM

Audio CDs are only 44k/16bit stereo. Since an audio extract from CD is just a file copy operation (placing the audio information in a .wav container), it will end up as 44k/16bit.

farss wrote on 9/21/2008, 12:37 AM

Important tip.
Seeing as how it's most likely the rest of your project and final output will be 48KHz sampling you really should change your project's audio resampling from Good to Best. Of course this kind of adds to the CPU load a bit. You can avoid having the CPU do the same calculations everytime you playout the timeline by rendering the CD audio to 16/48KHz files and put them on your timeline.

Bob.

megabit wrote on 9/21/2008, 1:56 AM

Thanks, guys - so CD Audio is indeed 16/44.

Yes Bob - I'm using Best re-sampling throughout my project. And now when I know the CD audio I'm using is only 16/44, I will indeed render it out to the final format - even though quality-wise, not much is going to be gained.

The main part of my project is live music recording, ad this was done in 32/48; I actually wonder whether to make my final delivery in 16/48, or maybe 24/48 (which I can see is a viable option in DVDA, as well)?

Derm wrote on 9/21/2008, 5:51 AM

Personally I would go with 16/48 for your DVD. No one is going to notice any quality difference at 24/44 and it just increases all of your overheads. You are also less likely to run into compatability issues using 16/48.
Regards
Derm