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Re: [ARSCLIST] Cassette obsolescence - digitizing standards
Back in here, I'm afraid:
On 21-Feb-06, at 9:52 PM, Dave Bradley wrote:
First off, you can upsample a 16-bit file to 1 24-bit file with
absolutely no increase in noise or relative distortion. If you find
elsewise, then you are either doing it wrong, or have really poor
software.
Distortion is a change in the sound. You are adding information that is
not there, hence, it is a distortion. "Cleaning up" the sound, is also
a distortion, of course. Everything adds distortion, starting at the
microphone, so life is a question of minimizing the distortions, and
being mindful of which and how you are adding...Personally, if I were
going to be doing my processing at 24 bit (which I wasn't commenting on
in my last post), I would transfer it at 24...I'm not so sure I would
be upres-ing to 24 from a 16 bit; I would have to think about it quite
a bit further, and would bet it had something to do with circumstances
being that I didn't have hold of the original, and there were very
special circumstances to warrant the upresing and dithering in addition
to the processing.
Best,
Alyssa.
Second off, the error caused by truncating OR dithering would be
within 1 value, not 14, so again the point is moot. You would prefer
to increase errors by up to 14 points (in my example) just so you can
avoid adding a possible 1 point error? Hardly what I'd call a sound
business practice when accuracy is indeed a necessity.
And this is regardless of what software or noise-shaping algorithms
used. Why do all this to audio from a cassette that most likely
already suffers from noise/hiss problems? Oh, and last but not
least, my ears can pick up the other problems that this scenario
creates -- audible digital artifacts. The only way to avoid having
to deal with this mess is to do the job right in the first place and
make the original transfers in 24 bit. It might be best for the
original poster to invest a few dollars in obtaining an Alesis
Masterlink.
One man's opinion.
Bob Conrad
Fort Lee, NJ
Alyssa.
___________
Alyssa Ryvers
Composer / Sound Engineer
Music North
www.musicnorth.com