SoundSoap Problem - EQ Phasing

Archived from groups: rec.audio.pro (More info?)

I'm using SoundSoap for the first time, and it seems like a handy tool
for the arsenal. However, I'm experiencing an odd phenomenon that's
making it unusable for me.

It seems to introduce an odd phasing EQ. In other words, the beginning
of some voice track lines will have some extra low frequencies
introduced. These boosted lows will taper off as the sentence
progresses, eventually to a point where it becomes low end _light_.

I can't figure out what the problem might be. And since there's not a
whole lot of controls to contend with in the first place, I'm at a
loss.

Has anyone else experienced this problem, and if so, what was the
solution?

Thanks,

JV

Archived from groups: rec.audio.pro (More info?)

<jviking@comcast.net> wrote:
>
> It seems to introduce an odd phasing EQ. In other words, the
> beginning of some voice track lines will have some extra low
> frequencies introduced. These boosted lows will taper off as the
> sentence progresses, eventually to a point where it becomes low end
> _light_.


It sounds like you might be describing comb filtering. If Soap reaches
too far, it will start removing desirable signal along with the noise.
Since it uses polarity inversion to do the removal, you wind up with
that vaguely swooshy, hollow sound.

If you're interested in experimenting with comb filtering, create
another track with the same material on it, and invert the polarity of
the duplicate track. Turn the volume up and down on the duplicate
track, and listen to what it sounds like when mixed with the original.

The solution is to take a more selective noise sample that doesn't
include any of the "keeper" sound, and/or back off the amount of noise
reduction. You don't get something for nothing with corrective tools,
so you have to find a balance between desirable effects and unwanted
artifacts.

--
"It CAN'T be too loud... some of the red lights aren't even on yet!"
- Lorin David Schultz
in the control room
making even bad news sound good

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