[LAU] [Sort of OT] Ringing in filters

[Ken Restivo]

On Wed, May 12, 2010 at 11:12:22AM +0200, Fons Adriaensen wrote:
> On Tue, May 11, 2010 at 05:39:04PM -0700, Ken Restivo wrote:
> 
> > > Jamin's FFT based filter is not really a filter, it's a vocoder
> > > being used as a filter and it has side effects. 
> > 
> > Wha??? Um, yuck.
> > 
> > I just mastered a CD using Jamin. Was that a mistake?
> 
> Depends on if you like the result...
> 
> > I mastered a CD through a vocoder?
> 
> Yes.

Bleak.

> 
> Early versions had quite severe side effects. Later the
> overlap factor of the block processing was increased, this
> more or less hides the artefacts, but they are still there.
> 
> Another thing to take into account that at LF the real 
> filter does not correspond at all to the one shown in 
> the GUI.
>

So, are the artifacts caused by the compressors or the EQ? I didn't use the EQ on JAMIN at all, just the multiband compressors and the final limiter.

> > Is there a better GPL tool I should have used?
> 
> If you want one that has this type of 'graphical' filter
> I suspect the answer is no. But you don't need graphical
> filters for mastering, a multiband parametric will give
> better results.
> 

But what about the compression and limiting?

-ken