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Jehovahkill Deluxe - Anyone else with a dodgy disc 1?
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Leonard
Leonard
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Edited Nov 10, 2006, 21:04
Re: Jehovahkill Deluxe - Anyone else with a dodgy disc 1?
Nov 10, 2006, 20:59
It will probably be aliasing noise resulting from whatever process or effect has been performed on it, it's not visible on a waveform, even zooming in. you need some better tools, Samplitude has them (you can do some crazy visual FFT comparisons with that), also using Sonic foundrys noise removal filters to produce a subtractive wave based on threshold dbs will also show you noise. Proper noise (as in not crackles and pops) however does spread over most of your dynamic range, so the only way to truly get at it, to remove it or see it, is by running a kind of chase algorithim which is second guessing (based on nifty predictive math) what should be there as opposed to what shouldn't be (aka noise).

Try this http://www.cs.ucl.ac.uk/teaching/Z24/02-audio.pdf for some more info. that explains how aliasing noise can occure in an A/D conversion, thing is though similar artifacts can be produced by digital processing such as downsampling (form say 96K to 44.1K), or even the corrective techniques of some digital effects such as compression, phasing, or any of the newer whacky effects out there.

Edit : Not only, but also, badly setup anti-aliasing filters/effects/processes can also produce crackles/noise all of there very own. In fact I have in the past written an entire tune out of anti aliasing noise, Oval do that kind of thing a lot.
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