Cutting off frequencies in ableton?

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sketchyderek
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Cutting off frequencies in ableton?

Post by sketchyderek » Wed Jan 19, 2011 8:29 pm

I've done a search and nothing I've read really gave me a concrete answer.
When it comes to doing simple mastering when I finish a track, I try to cut off lower frequencies below 20 - 30 Hz, but haven't been able to find something in Ableton Suite that does it simply.

-EQ8's curve isn't sharp enough (I've tried fab filter pro's demo and it was perfect) and it's kinda tricky to get exactly what I want.
-EQ3 can have the top of the lows set, but only to 50 Hz which is too high.
-I heard you shouldn't use multiband dynamics, but with the setting I used, it seemed to work. I just dropped in the default, turned off high and mid, set the low frequency to 30 Hz then input to -24.0 Hz.

My multiband dynamics settings are here:
http://twitpic.com/3rirc0
Looking at the spectrum analyzer, it seemed to work perfectly. What is the problem with this method?

Oh and finally, I convert the final product from wav to mp3 using itunes. There's an option to filter out frequencies below 20 Hz when converting... is there any reason this option should/shouldn't be used?

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EDN
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Re: Cutting off frequencies in ableton?

Post by EDN » Wed Jan 19, 2011 8:46 pm

Use the utility tool and press the DC button in the top right hand corner, that should do it.
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paravrais
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Re: Cutting off frequencies in ableton?

Post by paravrais » Wed Jan 19, 2011 8:52 pm

Do you know why your cutting those frequencies out?

Hedknot
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Re: Cutting off frequencies in ableton?

Post by Hedknot » Wed Jan 19, 2011 10:09 pm

Autofilter!?

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contakt321
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Re: Cutting off frequencies in ableton?

Post by contakt321 » Wed Jan 19, 2011 10:39 pm

Autofilter

or

2 Instances of EQ8

Each EQ8 can provide 12db of cut (I think), do you really need a 24db cut at 30hz? I bet 12db is fine and your mastering engineer can do more w/ better tools if need be.
Last edited by contakt321 on Wed Jan 19, 2011 11:44 pm, edited 1 time in total.

sketchyderek
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Re: Cutting off frequencies in ableton?

Post by sketchyderek » Wed Jan 19, 2011 11:35 pm

paravrais wrote:Do you know why your cutting those frequencies out?
Because most systems don't have that kind of frequency response, and it makes more room in the mix.

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Re: Cutting off frequencies in ableton?

Post by sketchyderek » Wed Jan 19, 2011 11:44 pm

EDN wrote:Use the utility tool and press the DC button in the top right hand corner, that should do it.
nice, didnt know about that!


didn't think of using autofilter :facepalm:

anonnona
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Re: Cutting off frequencies in ableton?

Post by anonnona » Sat Feb 02, 2013 6:44 pm

having this prob with Ableton as well.
just noticed last night that there's always like EXTRA LOW freqs coming out of live's master bus, no matter what instrument is playing. even just a hihat.
im talking like 12-15 Hz.
it eats up headroom.
The EQ8, even five of them stacked up in a row dont remove it.
just wondering why anything below 20Hz would be allowed to come out of a DAW at all.
Anyway, It's so apparent and even sad bro, something like that is overlooked when this app is so elegant.
it LOOKS and acts elegantly that is.
But with mixing out, stems go into Logic for reasons like this.Tell Logic to cut below 20Hz, and it's cut.

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RandoRando
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Re: Cutting off frequencies in ableton?

Post by RandoRando » Sat Feb 02, 2013 11:54 pm

op cut at 20, 20-30 is where all the good bass is at. not that 50hz bullshit. your always gonna have shit in subsonc frequenices. if you start cutting like crazy your tune is gonna sound digital as hell. unless its extremely loud, one eq8 with a steep Q will do just fine.
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123kidd
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Re: Cutting off frequencies in ableton?

Post by 123kidd » Sun Feb 03, 2013 12:08 am

Yeah dont over eq op! It tends to sound just as bad. I tend to cut below 20hz once im all done with tune. I just place an eq on the master and just cut from there. Take off the lowest lows and highest highs.
just noticed last night that there's always like EXTRA LOW freqs coming out of live's master bus, no matter what instrument is playing. even just a hihat.
im talking like 12-15 Hz.
This is true if you're using the stock spectrum analyser in ableton. The resolution tends to be high.

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Re: Cutting off frequencies in ableton?

Post by 123kidd » Sun Feb 03, 2013 12:08 am

Yeah dont over eq op! It tends to sound just as bad. I tend to cut below 20hz once im all done with tune. I just place an eq on the master and just cut from there. Take off the lowest lows and highest highs.
just noticed last night that there's always like EXTRA LOW freqs coming out of live's master bus, no matter what instrument is playing. even just a hihat.
im talking like 12-15 Hz.
This is true if you're using the stock spectrum analyser in ableton. The resolution tends to be high.

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OfficialDAPT
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Re: Cutting off frequencies in ableton?

Post by OfficialDAPT » Sun Feb 03, 2013 12:55 am

EDN wrote:Use the utility tool and press the DC button in the top right hand corner, that should do it.
Is this true because it doesn't seem like it would be...
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baseband
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Re: Cutting off frequencies in ableton?

Post by baseband » Sun Feb 03, 2013 1:59 am

I don't know how this program implements it's DC filter, but it probably will not provide attenuation at 30 Hz.

That low frequency content in "high frequency" sounds occurs when the signal level changes very quickly relative to the sample rate. For example: make a new audio file. draw a sample point at positive 0 dBFS followed by a few hundred samples of -inf dBFS (silence) and preceded by an equal length of silence. So you have silence, single positive spike, and silence. Copy the whole thing, paste it on the end, and invert it. Now you have silence, positive spike, double silence, negative spike, silence. copy the whole thing, and paste it on the end. then copy the whole thing again and paste it on the end again. basically, just doubling it over and over and over. do that until you have about 5-10 seconds of these spikes and silence. just to be safe, normalize it. then loop it. it sounds very high-frequencied, but it is actually very "full-frequencied". look at it on a frequency spectrum. you can even verify the low end by doing a 24dB high pass at ~40Hz and a high pass at around 120Hz. This will chop out a HUGE amount of energy, so it will have a very tiny amplitude. normalize it up to a reasonable level and play it. there will be a click at the start and finish (discontinuity) unless you fade in/out, but it actually makes a pretty nice sub.

what that example is doing is basically "playing the filter". an impulse (or a super fast rate of change in signal level) will have its energy spread across the full spectrum. cutting out the deep lows on a "clicky" piece of percussion (for example) will "soften out" the hit very very slightly but will reduce signal energy. you will get the more or less the same sound with a lower overall amplitude.

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Steve_French
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Re: Cutting off frequencies in ableton?

Post by Steve_French » Fri Feb 08, 2013 1:19 am

EQ8 has a scale option. turn this to 200% and it will pretty much act as a 24db/oct slope (i think)

sine143
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Re: Cutting off frequencies in ableton?

Post by sine143 » Mon Feb 11, 2013 7:43 pm

what are you guys doing to correct for phase shifting due to filters? as I understand it, the higher slope (or the more instances you stack) the more horrific phase shift you get. is this true?

if not, try izotope alloy. LOVE this plug. makes my mixing much more repeatable. also, they have *brickwall* filters

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Re: Cutting off frequencies in ableton?

Post by FAARE FACED » Mon Feb 11, 2013 10:18 pm

Brutal solution : Ozone, EQ brickwall at 30. I hope you got a decent CPU tho
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RmoniK
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Re: Cutting off frequencies in ableton?

Post by RmoniK » Sun Feb 17, 2013 10:10 pm

the DC filter will filter below 5 Hz or so at most, not 30.

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tripwire22
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Re: Cutting off frequencies in ableton?

Post by tripwire22 » Mon Feb 18, 2013 4:45 pm

Just roll it off at 30 no need for a brick wall....

http://postimage.org/image/7juvw0g33/

That's the hardest i could roll it off. I didn't set it to 30 but it seems fine. I think if you multiply the same eqs over and over it might make difference i can't remember where i read that though.

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StratosFear
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Re: Cutting off frequencies in ableton?

Post by StratosFear » Mon Feb 18, 2013 5:24 pm

If you use more than 1 of the filters to cut off at 30 in Ableton's EQ (also, make sure you turn on hi-quality), it will provide a steeper slope.
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