Re: [music-dsp] EQ-building with fine adjustable steepness

[rolfsassinger]

Hello Robert

 

thanks, so this means that it will come out with a cascade anyway. Would'nt it then be generally better to put filters in series or use parallel band width limited filters though?

 

Regards Rolf

 

 

Gesendet: Mittwoch, 27. Juni 2018 um 16:49 Uhr
Von: "robert bristow-johnson" <r...@audioimagination.com>
An: music-dsp@music.columbia.edu
Betreff: Re: [music-dsp] EQ-building with fine adjustable steepness

So with a one-pole LPF with its corner frequency set very low, you wI'll get a -6 sB slope, which is twice the slope that you desire for pink noise.if you follow that with a zero, the slope will bend back to zero slope.

 

So repeating and alternating poles and zeros, will get you a slope somewhere between 0 and -6 dB per octave. If you start with a pole on the left and follow it shortly with a zero, it will be closer to zero.  If you have more space between the pole and zero frequency, then the slope is higher.

 

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