On Wed, 2010-09-29 at 15:50 +0200, fons@email-addr-hidden wrote:
> On Wed, Sep 29, 2010 at 06:11:36AM -0700, Patrick Shirkey wrote:
>
> > Otherwise in the interests of keeping a relatively convivial tone I would
> > like to thank you for spotting the flaws that you have found.
>
> Here's one more:
>
> <http://www.kokkinizita.net/linuxaudio/jamin-iir-xover.png>
>
> This the frequency response (no EQ or whatever) using the IIR crossover,
> set to 500 Hz and 3 kHz. Those 'qualitatively more experienced DSP
> engineers' don't apparently have the experience to perform even the
> simplest of tests. Nor do they know that the type of filter used will
> produce antiphase signals at the crossover frequency.
>
> (Hint: invert the mid band).
>
Damn, I just noticed that you said IIR crossover - Steve recommended
against using the IIR crossover for serious work. In fact, it says that
in the tooltip in Edit->Preferences. I think he knew it wasn't optimal
when he threw it together. If you know how to fix that it would be
great.
Jan
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Received on Thu Sep 30 04:15:04 2010
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