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Left - Mid - Right EQ'ing


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#1 Beatronome

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Posted 18 August 2014 - 12:14 AM

So, long story short; last weekend someone told me about a guy that does mixing in this big music studio nearby who was able to equalize left - mid - right seperately using a certain Waves-plugin.

I was pretty sceptical at first since to my knowledge M = L + R. But I searched the internet for it and apparently he was talking about the S1 Stereo Imager that would allow this stuff. However, I ended up on some forum where someone said that with a recent update of the S1 the templates to do this were deleted and no one has figured out how to do it since. Some argue it can be done with regular mid-side plugins as well, yet one dude made an extreme example in which it apparently didn't work.

So does anyone have any experience with this stuff? Is the sound quality still good if you take it to the extreme or does it only work for minor changes? If this works even slightly better than mediocre it could have major implications for sampling.

I never heard of it so I feel like I'm missing some point here. Can someone shed some light on this?



#2 EdTheYounger

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Posted 18 August 2014 - 12:36 AM

Hey man, do you mean EQ'n 1 sounds left and right channels independently? If so, it's pretty straight forward... certain EQ's have the option built in. Waves basic Renaissance EQ's for example. If you see the bottom right of the image there's a 'Left-Link-Right' switch which allows you to switch between and do separate EQ's on either channel. In my experience it works pretty well and can help increase a stereo image but it has a fine point between adding something desirable or just ruining the image of the sound...  

I think I've only ever used it once or twice to be honest.

 

 

renaissance-equalizer.jpg

 

 

Peace.



#3 Grifty-Rodriguez

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Posted 18 August 2014 - 12:39 AM

Look up "mid-side". It's more than possible, it's super common! Numerous plugins, eqs, compressors, and limiters and shit use it

#4 Beatronome

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Posted 18 August 2014 - 12:41 AM

I don't mean mid - side, I mean a distinction between 3 different spectrums: Left, Mid and Right. I'm not sure if the plugin EdTheYounger suggested does what I mean, I think it just does left-right and not middle?



#5 Beatronome

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Posted 18 August 2014 - 01:24 AM

Consider this example:
There's a track with hi-hats panned completely to the left, a tambourine and an acoustic bass panned completely to the right and a guitar in the middle (which means equally left and right). I want to make the hi-hats on the left and the acoustic bass on the right to be turned down without making any changes to the middle of the track (the guitar) or the tambourine. The high frequencies of the guitar overlap with the hi hats and the tambourine and so do the low frequencies of the guitar with the acoustic bass.
The link I posted in my opening post suggests that it can be done (except for one guy that says it will mess up the stereo image which I thought would happen too) or did I misinterpret this? Or am I overstating the extent to which this can be done (I guess in this case you'll always mess with the middle no matter what)?



#6 MattCoops

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Posted Today, 05:20 AM

wow, ya'll are technical with the skills.

I'm still recording to cassette. So I get on my handy four-tracker and record one track panned left and the other panned right.



#7 Grifty-Rodriguez

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Posted Today, 08:34 AM

beatronome....i'm pretty sure this can be done with some type of mid-side splitter plugin.  once you split it, guitar should be on your "mid" channel and the L & R channels stereo information would be on a stereo "side" channel.  so split that further into the L and R and you can EQ the bass down on the right and just turn the gain down on the hats


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#8 Beatronome

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Posted Today, 09:04 AM

I've never been able to pull that off without loss in quality though... Going to screw around some more, maybe get a different Mid-Side EQ.



#9 EdTheYounger

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Posted Today, 01:45 PM

Hey beatronome. Yes the plugin I posted will do what you're asking, as will many EQ's that have the option. It can mess with the image when not used subtley. I mainly use it when there a harsh frequencies in one ear, just to notch them down without turning down other elements in the overall track.

As with any processing or plugins, the more you add to a sound the more fragility you are giving it... Especially when working with old samples. I don't think any plugins could do an extreme job of seperating the channels without also extremely messing up feild and/or sound quality when pushed hard...

Let us know how you travel,

Peace!
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#10 Beatronome

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Posted Today, 02:46 PM

Alright thanks guys!






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