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In Reply to: Re: Do you lose resolution by recording to HD first and "Normalizing" to 0dB later? posted by AndyG on March 18, 2002 at 10:30:53:
Good point, but I'm posing this as more of a hypothetical, for when you have an analog source that's either not referenced, or else you're doing a transfer from LP, etc.If you do a little previewing of the material and are skillful enough to leave *less* than 6dB of "room" between the highest peak level of your material and the 0dB [digital maximum] level, would it be correct to say that you're probably losing no more than 1 bit? (Which at 24 bits is not a huge deal) ?
Mike
Follow Ups:
If you are copying from a record, your dynamic range is about 56db at the very best. A 16 bit recording has a theoretical 96db,(typically 92 in real terms). 24 bit recordings will well exceed your analogue input electronics, the best SN ratio I've seen quoted on 24 bit converters is 107db. If you run a little test you should be able to align your peak within 2db of digital 0db without any problem.Regards
Roland
Is there something other than taking a few minutes to play what appear to be the widest groove modulations on the record, and see where they peak out? If it's not too involved, what is the test you're referring to..? Thanks for your help -Mike
Thats exactly what I'm referring too! You wouldn't go to lay bricks without mixing up mortar, why on earth would you try to record without taking a level. On live classical sessions I regulary mod up to within about 1-2db peak level on a live session without much dificulty. As I said before, coming off records your dynamic range is horrendous, so normalization or not isn't going to have any audible effect except that of level. But that is no excuse for poor recording practice.Regards
Roland
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