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band-splitting a signal?
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Shiranui
IsraTrance Full Member
Started Topics :
116
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1219
Posted : Jul 8, 2010 19:49:38
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Say you wanted to split a signal in two perfectly, like for example split it into above 5 khz and below 5 khz, such that when you sum the two resulting signals you perfectly get the original signal.
This is pretty easy to do in theory, you just run the signal through a 5 khz lowpass to get the "below 5 khz" and then subtract that signal from the original signal to get the "above 5 khz"
The question is do any DAWs have an easy way to do this? I want to split the low/high bands of a signal and process the two seperately then recombine them. |
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Josh Inc
Started Topics :
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Posts :
29
Posted : Jul 8, 2010 19:52
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duplicate the original signal track, highpass on 1, lowpass on the duplicate, then buss the both to a group track. job done.
why though?
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Shiranui
IsraTrance Full Member
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Posted : Jul 8, 2010 19:58
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I want to do it with an arbitrary filter though, not just a simple highpass/lowpass.
I want to experiment with applying distortion, compression, reverb, echo etc to only certain frequency components of the signal |
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Josh Inc
Started Topics :
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29
Posted : Jul 8, 2010 20:17
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send fx tracks might work nicely for that aswell mate.
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*eLliSDee*
IsraTrance Junior Member
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40
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671
Posted : Jul 8, 2010 21:30
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willsanquil
IsraTrance Full Member
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Posted : Jul 8, 2010 21:56
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its incredibly, ridiculously easy to do exactly this with Ableton using Audio Effect Rack:
Drop your intended-to-be-split signal into an audio track, insert a audio effect rack, insert an EQ8 or your own EQ/filter of preference
Duplicate that so that you have two chains
Set one to high, one to low at your desired frequency...
now you can mute/solo the parts as you want, add FX to the top/glitch the bottom, do whatever the hell you want.
I prefer splitting a signal into highs/mids/lows for this personally as you have more possibility, like if you just fuck with the mid-range you can usually leave bass and driving percussion alone while messing or adding in extra layers of midrange
 If you want to make an apple pie from scratch...you must first invent the universe
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willsanquil
IsraTrance Full Member
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Posted : Jul 8, 2010 21:57
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Shiranui
IsraTrance Full Member
Started Topics :
116
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1219
Posted : Jul 9, 2010 01:58
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Yeah that also only works for simple high/low pass...
I want to be able to do it with arbitrary EQs, comb filters, etc
I guess this would be a good exercise for my first VST |
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Maine Coon
IsraTrance Junior Member
Started Topics :
12
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1659
Posted : Jul 9, 2010 06:35
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Hmm, I wonder if using exact same EQ/filter on the second copy as on the first copy, but inverting all the gains, will do the trick. You have two copies of a track. On one you have an EQ cutting 6dB in each of 5 frequency ranges (I am pulling these numbers out of my ass, of course). On the other you have an exact same EQ with exact same frequencies and Qs, but adding 6dB in those 5 ranges. Theoretically, these two should sum up to the original sound, right? |
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Elad
Tsabeat/Sattel Battle
Started Topics :
158
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5306
Posted : Jul 9, 2010 15:21
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