lunarbeats
IsraTrance Junior Member
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Posted : Dec 14, 2013 14:11:57
I have great kick and bass track playing perfectly o 0db. When I apply more than 6db/octave hp filter at 30hz on a synth bass in Logic the volume increases and I geting Overdrive. I'm try it with Fabfilter ProQ, Waves Q10 and native Logic eq. Same results.
Does anyone know why?
I've recorded simple vieo with this issue.
Check it:
Fungophago
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Posted : Dec 14, 2013 15:24
the eq algorithm integrating the poles has a resonance. the more poles you integrate the higher the resonance.
-12db is the best choice for sharpness of eq curve and resonance.
i don't know so much about proQ maybe they have a way to compensate that...
cheers
https://soundcloud.com/fungophago
Babaluma
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Posted : Dec 14, 2013 15:37
yes, very common, and yet another good reason not to be trying to kiss 0dBFS all the time...
Melange5738
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Posted : Dec 14, 2013 16:40
I remember that from one of my courses but I do not remember all the details. In essence I think you always add a bit to the first non-affected fundamental when you cut, so using a less steep cutoff curve is probably the right way to go.
Hypereal
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Posted : Dec 14, 2013 16:41
http://dmgaudio.com/products_equality.php I use this EQ,it has digital,minimum,analogue and linear phase mods and 6/12/18/24/30/36/42/48 slopes.But in the end no matter what EQ you use to lowcut bass you will get level boost except linear phase which also have some other negative aspects.Also I urge you to download smexoscope and see what different slopes do to your bass http://bram.smartelectronix.com/plugins.php?id=4
PoM
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Posted : Dec 14, 2013 16:44
the higher the slope the less transparent the more "artifacts" you get ,choose best compromise what slope you decide to use.. accurate monitoring needed
you notice higher peaks cause of the phase shift /waveform change
PoM
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Posted : Dec 14, 2013 17:16
some of newer eq like ozone 5 and equilibrium let you adjust between phase shift / linear phase with great sound imo , a little of pre ringing but less phase shift is often more transparent than usuall linear or phase eq hp filter ,depend the sources..
and pro Q filters sucks no these are decent for high passing leads pads ect but for critical stuff these are not transparent enough imo
frisbeehead
IsraTrance Junior Member
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Posted : Dec 14, 2013 21:58
Quote:
On 2013-12-14 17:16, PoM wrote:
some of newer eq like ozone 5 and equilibrium let you adjust between phase shift / linear phase with great sound imo , a little of pre ringing but less phase shift is often more transparent than usuall linear or phase eq hp filter ,depend the sources..
and pro Q filters sucks no these are decent for high passing leads pads ect but for critical stuff these are not transparent enough imo
I wonder if it's not the interface leading us to think it's like that?
But I've been using Equality a lot lately and damn happy about it! I use the Pro Q for when I need to cut some harmonics with very sharp Q kind of stuff, since there's a lot of bands available there and the interface is pretty flexible - and you can bypass groups of bands and stuff like that...
faxinadu
Faxi Nadu / Elmooht
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Posted : Dec 14, 2013 23:32
Quote:
On 2013-12-14 16:44, PoM wrote:
the higher the slope the less transparent the more "artifacts" you get ,choose best compromise what slope you decide to use.. accurate monitoring needed
you notice higher peaks cause of the phase shift /waveform change
Bipolar
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Posted : Dec 15, 2013 03:11
One day I got a really cool way to see EQ, a really good producer that I know, told me that eqing was like a balloon full with water, if you press one side of the balloon, the other side will rise a little, If press the balloon in the middle, both sides are going to rise a little, and when you apply eq to a sound, the same effect tends to happen. When you make a low cut, or a high pass, some frequencies in the middle and high range will rise a little, that same principle can be use in some eqing methods, instead of adding more frequencies in the low end of your bass for example, try to cut some high freq, and the low freq, will rise a little that will help your low frequencies settle better
lunarbeats
IsraTrance Junior Member
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Posted : Dec 15, 2013 10:48
I found a fix for this!
HPFs will generally increase the peak amplitude (unless you are just lopping off a ton of stuff, as a tone shaper). It's because of the phase shift involved.
To fix this this I had used linear phase eq from logic native.Pro Q has same feature but it is high cpu usage on my old MBP
Babaluma
IsraTrance Junior Member
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Posted : Dec 15, 2013 13:14
yeah, but linear phase HPF's also tend to sound like arse due to the pre-ringing in the bass frequencies. it often makes the bass sound "wrong". i only ever use linear phase for high frequencies (and even then usually prefer analogue style/minimum phase).
another good recent discussion of this type of thing here:
PoM
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Posted : Dec 15, 2013 13:25
agree with cubic spline on that gs thread.. accurate monitoring is crucial in the lower octaves otherwise you may think hp is way more transparent than it really is. the rest of the tune sounds/ freqs can kinda hide the mess hp introduce when at mastering thought..but ..
i find best way to test eqs HP is with a KBBB and HP the bassline.. as the timing ,transparency is crucial and more easy earable in that situation..
frisbeehead
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Posted : Dec 15, 2013 15:23
Quote:
On 2013-12-15 13:25, PoM wrote:
i find best way to test eqs HP is with a KBBB and HP the bassline.. as the timing ,transparency is crucial and more easy earable in that situation..
yeah, me 2! Some real good headphones can also enlighten faster and easier then good old monitoring for real low stuff.
daark
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Posted : Dec 15, 2013 15:41
no these are decent for high passing leads pads ect but for critical stuff these are not transparent enough imo 
