Thread: DAT32 or Mp3?
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Old 2006-05-17, 10:26 AM
mixwell mixwell is offline
 
Join Date: Dec 2004
Re: DAT32 or Mp3?

I'm used to looking at Sound Forge's scopes and all these other ones really tweak my eyes sometimes, so forgive me if I'm seeing what's "not really there".

A 32K DAT is essentially 16K stereo sampling. This means anything above 16K (like 16.0001) is impossible. There is no ability for the realm to understand, record or decode anything beyond 16K on each channel, it's digital precision at it's best (or worst, if you like).

Now that somehow finds it's way to being upsampled to a 16-44 CD quality file, which we then are possibly viewing here. What would we see? In the conversion and depending on lots of conversion factors (filters, anti-alias, etc), noise can occur and spread into the remaining 16k to 22.05k area. But that noise would never (OK, let's say it's highly unlikely) exceed the -90db noise floor of digital.

So an FA showing what's happening at those freq's would help. If there is 17k material reaching beyond -90db, then it's most defintinely not a 32K source.

Sorry for the rambling...
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