low-pass mono-izer ?

Discussion of music production, audio, equipment and any related topics, either with or without Ableton Live
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Mister Natural
Posts: 238
Joined: Wed Mar 21, 2007 2:44 pm
Location: michigan

low-pass mono-izer ?

Post by Mister Natural » Sun Aug 11, 2013 11:06 pm

let's say high-passing back to stereo at something like 150hz . . .

how do I set up using native non-MAX efx in LIVE8 ?

thanks
An Expert Only on What it Feels Like to be Me
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timday
Posts: 569
Joined: Mon May 04, 2009 1:02 pm

Re: low-pass mono-izer ?

Post by timday » Sun Aug 11, 2013 11:41 pm

i'd try two chains in a live rack, EQ8s for the crossovers, utility on the mono chain set to mono-ise the track.

florian_bl
Posts: 81
Joined: Wed Oct 12, 2011 3:53 pm
Location: Austria

Re: low-pass mono-izer ?

Post by florian_bl » Mon Aug 12, 2013 12:17 am

I made a rack for this using Ableton Live plug-ins only. Explanation (for the one knob) and download here: http://florianbl.tumblr.com/post/159432 ... -mastering

Mister Natural
Posts: 238
Joined: Wed Mar 21, 2007 2:44 pm
Location: michigan

Re: low-pass mono-izer ?

Post by Mister Natural » Mon Aug 12, 2013 4:50 pm

florian_bl wrote:I made a rack for this using Ableton Live plug-ins only. Explanation (for the one knob) and download here: http://florianbl.tumblr.com/post/159432 ... -mastering
THAT ^ is exactly what I was looking for

thanks !
An Expert Only on What it Feels Like to be Me
& You Are Who You Google

http://soundcloud.com/mrnatural-1

jaomumu
Posts: 4
Joined: Sun Nov 08, 2009 6:12 pm

Re: low-pass mono-izer ?

Post by jaomumu » Mon Aug 12, 2013 7:34 pm

EQ8 mid/side mode > cut the bass in the side channel - thats all 8O :wink:

marcoskohler
Posts: 333
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Re: low-pass mono-izer ?

Post by marcoskohler » Mon Aug 12, 2013 7:40 pm

How do dedicated plugins normally do this though? Do they just cut the bass in the side channel? Or do they collapse the side bass to the middle, which could lead to some phasing issues?

jaomumu
Posts: 4
Joined: Sun Nov 08, 2009 6:12 pm

Re: low-pass mono-izer ?

Post by jaomumu » Mon Aug 12, 2013 8:43 pm

marcoskohler wrote:How do dedicated plugins normally do this though? Do they just cut the bass in the side channel? Or do they collapse the side bass to the middle, which could lead to some phasing issues?
All Mid/Side processors transforming the (2channel) Left/Right signal into a (2channel) Mid/Side signal. Means the Mid channel is transformed by "Left plus Right" (which is actually a pure mono mix) and the side channel is transformed by "Left minus Right (Left + phase inverted Right)".
In the side signal you will find every information which is not mono (the difference of Left and Right).
After this transformation you can do individual processing on the Mid (mono) and on the Side (difference) channel as well. After those processing they will be mixed back to the normal stereo signal.
The processing of the EQ8 is obviously a EQing.
If you have massive phasing problems in between the left and the right channel then indeed this could lead to a problem (also like the methods the other users mentioned above) because, as stated above, the Mid signal is a pure mono mix.
For example it might be possible that you will loose some power in the bass.
Then you could try to balance this with a bass boost in the mid signal.
The advantage of Mid/Side processing (especially when trying to get the bass frequencies to mono) is, that there is no further filtering necessary (which could lead to extra phasing problems).
Also the transformation into a Mid/Side signal is mathematically very easy and therefore very cpu-friendly.

As a extra information to this theme: Also in the early days of cutting vinyl there was Mid/Side processing involved (for example the Fairchild compressor with a Mid/Side mode on board).

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