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Old 17-02-2013, 08:00 PM   #1
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Filters?

Does anybody here know about some videos/sites that explains the basics of filters (high-pass, low-pass, band-pass, band,reject) ?

Cant really find much when i try google... x( :s

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Old 17-02-2013, 08:07 PM   #2
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Re: FIlters

I can give you the basics.

high pass lets the highs pass
low pass lets the lows pass
band pass is a high and a low pass together, IE it cuts the top and the bottom off a sound
band reject is the opposite of that

BAnd filters usually have a width setting to determine how wide the band is.
resonance determines how much the filter resonates at the frequency the cut it set at. when it's low it just curves down gently. when it's high it jumps up sharply and then falls off rapidly.

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Old 17-02-2013, 08:16 PM   #3
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Re: FIlters

Quote:
Originally Posted by ghyt wembpang View Post
I can give you the basics.

high pass lets the highs pass
low pass lets the lows pass
band pass is a high and a low pass together, IE it cuts the top and the bottom off a sound
band reject is the opposite of that

BAnd filters usually have a width setting to determine how wide the band is.
resonance determines how much the filter resonates at the frequency the cut it set at. when it's low it just curves down gently. when it's high it jumps up sharply and then falls off rapidly.

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As simple as that Thanks! Now i just got to learn what cutoff means I can find that one out my self
Sometimes you just dont know what words to put in the search bar, so big thanks to you!
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Old 17-02-2013, 08:35 PM   #4
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Re: FIlters

Quote:
Originally Posted by ghyt wembpang View Post
I can give you the basics.

high pass lets the highs pass
low pass lets the lows pass
band pass is a high and a low pass together, IE it cuts the top and the bottom off a sound
band reject is the opposite of that

BAnd filters usually have a width setting to determine how wide the band is.
resonance determines how much the filter resonates at the frequency the cut it set at. when it's low it just curves down gently. when it's high it jumps up sharply and then falls off rapidly.

[Only registered and activated users can see links. Click here to register]

So filters are basically just a small EQ? Like in sylenth and massive, there are filters... so they act like a EQ with presets.... (those basic filters i just mentioned earlier)?
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Old 17-02-2013, 09:20 PM   #5
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Re: FIlters

Quote:
Originally Posted by FoDriZZlE View Post
So filters are basically just a small EQ? Like in sylenth and massive, there are filters... so they act like a EQ with presets.... (those basic filters i just mentioned earlier)?
Different shapes of filter.


Play a sound out of a synth with a spectrum analyzer so you can see the shape of the filter.

Its actually quite informative/

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Old 17-02-2013, 10:22 PM   #6
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Re: FIlters

Quote:
Originally Posted by FoDriZZlE View Post
So filters are basically just a small EQ? Like in sylenth and massive, there are filters... so they act like a EQ with presets.... (those basic filters i just mentioned earlier)?
You've almost got the right idea.
An EQ is actually just an array of different filters.
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Old 18-02-2013, 03:34 AM   #7
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Re: FIlters

There are generally three big differences between an EQ and a filters in practice. In theory, an EQ is just a kind of filter, but I'm talking about how they are used in music production.

1. EQs generally have a very gentle slope, while filters generally have a much steeper slope (4 or 6 or more poles)

2. EQs try to be as neutral and smooth as possible, while filters are often resonant so they impart a color on the sound (which people like). An EQ shouldn't (in theory) change a sound besides remove or boost from frequencies in it.

3. Filters generally can be controlled by an envelope, which originally helped them to emulate the attack of a trumpet or whatever. Typically EQs are set and not controlled by the music in any way.

Resonance (in practice, I'm not being technical) means that frequencies close to the cut-off are boosted relative to frequencies far from the cutoff. That is what gives a 303 that squelch in the mid-range, for instance.

There are lots of different ways to implement filters, and they all sound different. That's way people say they like Oberheim or Moog or 4 pole or 6 pole or whatever. Generally it is really hard to imagine how a sound will be affected by a given filter. You're much better off trying them out and finding our for yourself.

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Old 18-02-2013, 03:54 AM   #8
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Re: FIlters

Quote:
Originally Posted by FoDriZZlE View Post
As simple as that Thanks! Now i just got to learn what cutoff means I can find that one out my self
Sometimes you just dont know what words to put in the search bar, so big thanks to you!
The cutoff is basically the place where the filters will cut off the frequencies.

If you throw on a lowpass filter with the cutoff on 400, every frequency over 400 should be eliminated.
vice versa with the highpass.

Just to clear up what resonance is. If you'd put a high resonance on this filter, you would notice a big peak on the 400-mark, which gives the sound a interesting effect.

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Old 18-02-2013, 04:02 AM   #9
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Re: FIlters

Quote:
Originally Posted by Dippshoe View Post
The cutoff is basically the place where the filters will cut off the frequencies.

If you throw on a lowpass filter with the cutoff on 400, every frequency over 400 should be eliminated.
vice versa with the highpass.

Just to clear up what resonance is. If you'd put a high resonance on this filter, you would notice a big peak on the 400-mark, which gives the sound a interesting effect.

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ahh, thank you vey much! Now i can probably continue with my theory book, without checking every single term Life gets a little easier when you know words and whatnot
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Old 18-02-2013, 04:24 AM   #10
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Re: FIlters

Made this INFOGRAPHICZ

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Old 18-02-2013, 04:32 AM   #11
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Re: FIlters

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Originally Posted by Numerical View Post
Made this INFOGRAPHICZ

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Old 14-04-2013, 09:22 AM   #12
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Re: FIlters

I think you should go on Youtube and look up High pass filter, Low pass filter ect. or you can try to find a guide on here or another website.

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