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HP the bass question.
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aciduss
IsraTrance Full Member
Started Topics :
112
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1490
Posted : Mar 31, 2010 06:40:36
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Hi, i've been working on my bass techniques.
I noticed that when one HP a nice low octave sawtooth it modifies the waveform and creates a peak (depending on the waveform sometimes is negative sometimes positive) as a result of applying the filter.
I've been trying with different EQ plugs and synth vsts they all seem to work the same.
My question is about how to proceed because let's say i have a consistent sawtooth signal that is coherent with my kick's amplitude but once i HP the bass it peaks a couple of decibels more than the unEQed version just because it creates this peaks that (i guess) make the db meter jump.
Since i have no deep knowledge on waveforms and the way they are graphed i assume this is re result of internal operations between the original's bass filter envelope and the added EQ to HP the subs.
I've tried to get rid of this peaks with a compressor but just when i manage to even the signal i ruin the sound.
So i just want to know how do you deal with this issue, because i have been analyzing various tracks and no released bassline seems to have this kind of peaks.
Bassline Picture:
http://www.freeimagehosting.net/image.php?a5b0e4ee49.jpg
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Simulton
Started Topics :
0
Posts :
16
Posted : Mar 31, 2010 09:20
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yeah, i'd also like to know regarding this ...happens often to me too
everytime i cut 30hz below from the bassline some harmonics appear and clip the signal, are there any tricks to avoid that from happening?
maybe smoothing out the slope of the cut? compression? tryin out a different eq?
thanks
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*eLliSDee*
IsraTrance Junior Member
Started Topics :
40
Posts :
671
Posted : Mar 31, 2010 09:47
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check on spectral analysis. if that below 40hz subs is not too significant,, leave it alone.
I've pondered this forever, because many here say its the the thing to do. and i was ignorant. only too happy to get blue name advice
that HP can sometime totally destroy the bass..
check if it hurts the sound,, if it does, DO NOT HP BASS. its not necessary in all cases. most synths compensate for those freqs. like albino. the filters start at 40hz
I found that HPing doesn't hurt my kick as much as my bass. so i HP only the kick @ +- 25-40hz ,and my bass-line is a boll of energy with no HP.
unless you use a synth that creates excessive rumble below 40.
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Cosmic Tandav
Trailoka
Started Topics :
67
Posts :
1026
Posted : Mar 31, 2010 12:33
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hp ing the bass usually screws the complete punch in the bass and does bring in some wierd unwated sounds...
so the best thing is not to high pass the bass at all and preferably only the kick (if need be ?)
and the mastering guys will adjust the sub / low ends anywez right ?
 https://soundcloud.com/hypnotiquerecordings |
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PoM
IsraTrance Full Member
Started Topics :
162
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8087
Posted : Mar 31, 2010 17:02
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try to flip the phase a little, the hp make you loose some headroom.
some great bassline have been made with hp some not ,just follow your ears but Theorically no need for hp > cleaner sound
also you can try linear phase eq . |
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aciduss
IsraTrance Full Member
Started Topics :
112
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1490
Posted : Apr 1, 2010 00:03
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Most of the times i can't follow my ears when working with -40hz you know because my room acoustics and all of that... so i usually cut there on my bass just hadn't noticed about that peak that hurts the waveform -_-
I will try a linear phase EQ see if that helps. Thanks. |
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Shiranui
IsraTrance Full Member
Started Topics :
116
Posts :
1219
Posted : Apr 1, 2010 02:29
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use a gentler highpass.
The sharper your cutoff, the less flat the passband will be, this is a mathematical truth which is unavoidable.
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Shiranui
IsraTrance Full Member
Started Topics :
116
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1219
Posted : Apr 1, 2010 02:39
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PoM
IsraTrance Full Member
Started Topics :
162
Posts :
8087
Posted : Apr 1, 2010 02:59
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Quote:
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On 2010-04-01 00:03, aciduss wrote:
Most of the times i can't follow my ears when working with -40hz you know because my room acoustics and all of that... so i usually cut there on my bass just hadn't noticed about that peak that hurts the waveform -_-
I will try a linear phase EQ see if that helps. Thanks.
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there are thousands of tracks with the waveform like that ,it s not something you have to worry |
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PoM
IsraTrance Full Member
Started Topics :
162
Posts :
8087
Posted : Apr 1, 2010 03:17
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yes i think electri q and ssl x-eq have it and from what i remember some waves eq sound like it s using it too.
from the x eq manual:
bessel : phase behaviour lead to no overshoot or ringing , sluggish roll off rate
gausian : no overshoot and no ringing but slow roll off in the frequency domain
butterworth : maximally flat magnitude response
chebychev : the magnitute increase and decrease regulary from dc to cutoff frequency
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aciduss
IsraTrance Full Member
Started Topics :
112
Posts :
1490
Posted : Apr 1, 2010 09:39
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Thanks for your answers... i've been experimenting a lil bit more... linear phase eqs preserve the waveform shape but are these adequate for the job of HP the bass? |
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makus
Overdream
Started Topics :
82
Posts :
3087
Posted : Apr 1, 2010 10:17
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dj chichke
Chichke
Started Topics :
83
Posts :
705
Posted : Apr 1, 2010 10:55
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Quote:
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On 2010-04-01 09:39, aciduss wrote:
Thanks for your answers... i've been experimenting a lil bit more... linear phase eqs preserve the waveform shape but are these adequate for the job of HP the bass?
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you have the LinEQ Lowband for this.
but it's not looks at the analyzers like what the mastering engineers use. i guess the serious mastering engineers use UAD. when i use LinEQ Broadband with lowshelf cut it's looks nice at the analyzer but it's damaging my bassline.
i guess it's better to live it for mastering engineers. |
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Elad
Tsabeat/Sattel Battle
Started Topics :
158
Posts :
5306
Posted : Apr 1, 2010 13:15
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Sanathana
Sanathana
Started Topics :
37
Posts :
410
Posted : Apr 1, 2010 13:33
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using HP filter is generally not recommended for bass ranging in the lower BPM's i.e. anything till about 150 BPM or perhaps a little more..... Exceeding the BPM means you need shorter / tighter bass to fill between your kicks which again need to be shorter and tighter without a long tail at the end.....
Rule of thumb is use HP filter for bass only if your BPM is high. This is my opinion anyways 
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