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How do they work: Logic mixer effects signal path
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Old 5th August 2012   #1
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How do they work: Logic mixer effects signal path

After much searching, I have not found the answer to my question (or I was just searching using the wrong keywords).

I have a slight understanding of how signal flow works: you have a sound, you send it through something (a mixer, a compressor, a software effect) and that sound is changed. Depending where you place something that affects the sound, how the sound sounds at the end can be different....compressing a sound before EQing it will sound different than if you EQ a sound then compress it. These things I get.

Now, Logic has its Mixer, and each sound channel has it own little channel strip where you can place effects. As a first time producer, my first tracks channel strips typically had EQ first, then other effects put onto it, as I saw the need for it (like a low pass filter when I figured out that a sound needed to be put through a low pass filter).

So I had a thought the other day: is there a "right" way to work the signal flow in Logics channel strips? Should certain effects be put in a certain order to get the best sound? Are there rules I should be following?
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Old 5th August 2012   #2
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The simple answer is no! There are recommendations but there is only one rule you must adhere to....if it sounds good then it's ok & it doesn't matter how you got there!
Some people like to EQ destructively first; removing unwanted frequencies, then compress, then EQ again to boost the frequencies you like but this is only a starting point. As you get used to techniques & equipment, you will get to a point where you will hear something instinctively know what compression or EQ it needs.

I find it helps to sort my thoughts into either "corrective" or "creative", keeping corrective effects on the channel strip & creative things like delays etc on aux sends but that's just me. The only real rule I have is self imposed, I never use reverb on bass it just makes it muddy & sound awful!
I hope this helps!

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Old 6th August 2012   #3
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As Andre said there is no right way to accomplish signal flow. However, depending on what genre of music you're producing, certain signal flows will be more conducive to producing "pro" sounding results than others.

As a general rule (I produce trance/edm btw), I put a compressor on every single track as my first FX input. That works well for me for two reasons: because it allows me to effectively control the gain on every channel without messing with the channel strip volume faders (sometimes that gets messy) and because it allows me to manipulate other compression parameters with the best results while I'm constructing my track.

As Andre also mentioned, lots of people like to bus out effects such as reverbs and delays, because then you don't have to put the same effects on different channels over and over again (assuming you've got multiple channels using the same effects settings). I used to think there was some really important reason for doing this, but there isn't. It just helps people's workflow to organize like that (and might help attenuate cpu usage), but it's definitely not necessary, and I don't do it because when I've got 5 different groups for submixing and 5 aux channels going, it gets cluttered/confusing (to me personally).
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Old 10th August 2012   #4
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Thanks guys. I have yet to find my good workflow and settings for things.
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Old 10th August 2012   #5
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Quote:
Originally Posted by Grindonthemind View Post
As a general rule (I produce trance/edm btw), I put a compressor on every single track as my first FX input. That works well for me for two reasons: because it allows me to effectively control the gain on every channel without messing with the channel strip volume faders (sometimes that gets messy) and because it allows me to manipulate other compression parameters with the best results while I'm constructing my track.
I would recommend not constructing channel strips on auto pilot. Compression affects the way audio sounds - making a decision in advance of hearing the audio seems counterproductive to my way of thinking.

Also since DAWs allow for drawing a volume envelope - I would avail myself of that technique first since it only affects the volume of a track - and doesn't alter the character. Or if not that then Automating the fader and listening to what it really needs.
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Old 10th August 2012   #6
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Originally Posted by AndreBenoit View Post
The only real rule I have is self imposed, I never use reverb on bass it just makes it muddy & sound awful!
Andre
X2 on this. Something else I do sometimes is put my reverb out on a bus and use sends on the tracks that I want to apply it to.

I will also put an eq on the bus after the reverb and high pass it wherever it sounds good. The pass point will depend on the material.
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Old 10th August 2012   #7
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Yeah I guess I should have clarified that even though I use a compressor on virtually every track, I don't always use it to compress the signal. Sometimes I use it as a simple gain control. I just like having it there because I almost always use at least a little compression on every instrument, and I'd rather have it first in the signal path--plus you can always remove/bypass it.
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Old 11th August 2012   #8
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Something else I do sometimes is put my reverb out on a bus and use sends on the tracks that I want to apply it to
This I do allways. I have a whole lot of busses that serves like this. Room rev, hall rev, 3 delays, Tremolo; and then I add buses to taste if I need more.
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