<<One problem is a tinkling effect on the verge of the trigger level,
for instance with leaf rustle, but if you set the frequency smoothing
to 500 this disappears.>>
This is the toggling of the noise gates in the absence of surrounding
masking frequencies. This can be minimized by setting more
conservative thresholds. Two passes with small amounts of noise
reduction can often yield more transparent results than one pass with
a heavier application.
<<Pre-filtering, such as a HPF roll-off before NR prevents "gravel"
being carried over to the foreground sounds, making them cleaner.>>
Yes, and a moderate, wide dip around the 6k region can reduce a fair
amount of hiss, so that the noise reduction algorithm has less heavy
lifting to do.
<<Any noise reduction kills atmos and reverberation in woods, etc, but
the trick is to mix back the original and by how much is an artistic
judgement. I tend to use the unfiltered original and keep it low, but
I'm ready to learn other techniques.>>
This is the same as setting a higher threshold, or invoking less of
the process.
Scott Fraser
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