Question about hipass and EQ

[Rex Rocker]

Ok, so I wanted to take off some boomyness from my guitars to make things a bit overall clearer. I thought I had a hipass going on at 100 Hz, but I started playing with a graphic EQ (you know, the ones where you have sliders and such) and I started cutting at 64 Hz... I notice, after a small cut of -2 or 3 dB's that it does make a difference... I'm like WTF?! Don't I have a Hipass at higher frequency?

So I go and check my hipass plug-in and there's two paramaters you can adjust on it. Cutoff frequency (which I have set a 100 Hz) and Resonance (which I have no idea what it does, but it is right now set a 0 dB...

Anyway, the question is: anyone know what is wrong here or what am I doing? Shouldn't I not need the cut at 64 Hz when I'm already running a hipass at 100 Hz? Anyone care to explain to me what the parameter 'resonance' in my hipass does, please?

And also... anyone care to recommend me a good EQ plug-in that has both a hipass and a lopass where I can see the curves and just visually acknowledge WTF I'm doing in terms of EQ, please? I'm running a Mac, BTW.

Thanks!

 

[Morgan C]

Could be the steepness of the high-pass. Some EQs will let you set that steepness (on mine its a Q setting, on some its a dB/octave), so that you have the frequencies slowly rolling off around that frequency. It doesnt eliminate any frequency under 64Hz.

 

[ahjteam]

Put Voxengo SPAN in the last insert and you'll see how the highpass filter behaves.

 

[Rex Rocker]

thanks!

I don't think Span works with Mac, tho...

 

[greyskull]

sonnox eq is great, and has very adjustable filters

 

[ahjteam]

thanks!

I don't think Span works with Mac, tho...

Any other analyzer is fine too, like this one.

Some others here : http://www.hitsquad.com/smm/mac/SPECTRUM_ANALYZERS/freeware/

 

[joeymusicguy]

also, even if you low pass something, you can still keep cutting lows

for instance

low pass at 800 hz on your overheads

then put a 200 hz narrow dip, the snare will go away even more (but now your overheads sound like a tube)

 

[AudioGeekZine]

it really depends on the steepness of the filter, how many dB/Octave the slope is.
The only other thing I can think of that might help is try changing the order of these plugins, maybe your DAW goes in reverse order?

Best EQ EVER is ApEQ. http://www.apulsoft.ch/apeq/index.php

PS, the resonance control is for synth style filtering. turning up the resonance amplifies the cutoff frequency.