Audio Craftsman wrote on Wed, 27 August 2008 15:47 |
What is a second order minimum-phase filter? Note: I do not have an electronics degree, so a "...For Dummies" answer would be appreciated. Thanks. |
Tomas Danko wrote on Thu, 28 August 2008 03:41 |
Second order would imply a +-12 dB boost/attenuate range. |
zmix wrote on Thu, 28 August 2008 14:30 | ||
Tomas, that is not correct. A second order filter has a slope of 12dB per octave, the filter's steepness has no bearing on the amount of cut and boost available. |
Audio Craftsman wrote on Thu, 28 August 2008 11:07 |
Mostly I needed to know that Minimum-Phase Filter means typical analog EQ as opposed to a digitally implemented Phase Linear EQ. Interesting that he mentions second order, specifically. Second order would NOT apply to a fully parametric filter, so I guess we have to assume he's talking about a graphic EQ, right? |
Andy Peters wrote on Thu, 28 August 2008 14:36 |
The "parameters" of a parametric EQ are the gain, the center frequency and the width of the passband. |
marcel wrote on Thu, 28 August 2008 22:59 | ||
Isn't the width of the passband dependent on the filter slope? It's just '2 slopes back to back', isn't it? |
Bruno Putzeys wrote on Wed, 03 September 2008 03:18 |
A bell boost can be compensated exactly by a bell cut (of the same shape) with no phase shift whatsoever. |
Fletcher wrote on Fri, 05 September 2008 07:57 | ||
Wouldn't you experience the adverse effect of the phase shift created by any analog filter system... only twice? From what I understand [and I could certainly be wrong] the phase distortion created by the filter networks is constant whether you are applying the gain of the filtered region in positive or negative polarity. |