Posted by nappy on 04/07/07 15:56
"Richard Crowley" <rcrowley@xp7rt.net> wrote in message
news:131f916bn8eft37@corp.supernews.com...
> P.C. Ford wrote:
>>Ok, guys thanks for the quick replies. I have tried the notch filter
>>and any progress seems subtle at best. Can't seem to find a "sweet
>>spot" on frequency.
>
> It is a complex waveform. You cannot do it with simple
> notch filters, no matter how many of them you have.
When I listened to the noise I did not come to that conclusion. Sounded to
me like a primary with a harminic or 2.
> You need the DSP function where the noise waveform
> is sampled and then removed. This is a built-in function
> of Adobe Premiere (and Cool Edit before Adobe bought
> it). I would have thought it was a rather common feature?
Yes.. but the algo that was used in Cool Edit many times would induce more
artifacts than it removed. I used to use this type of noise removal often in
the early 90s and was weaned away from it slowly because of the phase
effects it produced. I do recommed he try it but I no longer think of it as
the silver bullet. I did find though that it worked best with small samples
of the noise rather than large ones.
Sometimes it strikes me that these tools we use.. well.. low budget
productions take SOOOO much more work that those that have the best crews.
Some features and shows take zero stroking. And others are so hard that it
is almost impossible to push them to an acceptable quality.
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