30 Sep
2010
30 Sep
'10
12:20 a.m.
On Wed, 2010-09-29 at 15:50 +0200, fons(a)kokkinizita.net wrote:
On Wed, Sep 29, 2010 at 06:11:36AM -0700, Patrick
Shirkey wrote:
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
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).