I've been itching to play around with EQ FX isolation after seeing the
DJTT article and
one of Stewe's great mappings. One thing I wanted to avoid, though, was the use of any modifier states to achieve EQ isolation. My setup is is X1 + Z1 + MF3D, and it's great to be able to use a single non-native mapping without worrying about modifiers/etc clashing.
After poking around a bit, I came up with two techniques. Both eat up the 3rd and 4th decks, so this still isn't a very good solution if you're mixing with 4 decks, remix decks, live input decks, etc.
Simple EQ Isolation
The first technique is a super simple method that uses four buttons per deck: Reset, High, Mid, Low. Each button sets all three EQ kills across both matched decks. I copy deck A->C and B->D on a bunch of inputs to maintain sync for each pair of decks. The risk with this mapping is losing sync with EQ still split between decks.
Advanced EQ Isolation
The second technique allows for individual EQ band selection (instead of a single toggle, you can put any combination of high/mid/low on Deck A, with Deck C always opposite). It also automatically maintains sync by watching beat phase and seek position; if anything drifts it re-copies the shadow deck.
To do this, I'm using the scripting capabilities in
Lemur and having Lemur fire notes back to its Traktor mapping. I only picked Lemur up the other day, so I'm sure there's a more elegant solution than the one in the video, but I really love it so far.
Lemur is a paid piece of iOS software (currently $25 on holiday sale), and I'm actually using a wired connection with an
iConnectMIDI2+ to stay away from wifi issues (it's an $80 device, but provides a TON of MIDI/audio routing capabilities).
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