Which Effects Work Best In Parallel?

So one day i got it in my head to figure out which of Ableton Live’s Effects are the best to use in parallel.

What is the criteria for this? Simply, which processes alter the phase of audio passing through them, either to the least degree, or in a nicely summable way.

Why does this matter? Because phase offsets, when summed in parallel with the original signal, will inevitably cause changes to the frequency contour. Sometimes slight amounts of this phase offset can add a nice creamy touch to the sound of things (and pretty much all analog gear causes it to some degree), but when being surgically technical like during the finalizing stages of a track, they are generally just not helpful.

An example of not altering phase at all is Live’s Compressor effect which is phase-neutral; it can be used safely in parallel with no unwanted frequency coloration whatsoever.

An example of altering the phase in a “nicely summable” way is Live’s Reverb. Technically, it’s altering the phase a whole bunch, but it’s doing so in a time-smeared fashion which results in far less likelihood of perfectly-lined-up frequency cancellations, and so, when at 100% wet, reverbs can be just fine to use in parallel, and are often preferred this way.

After carefully checking the phase response of all of Ableton Live Ten’s native Audio Effects, i came up with five distinct racks providing combinations of the most parallel-friendly native effects, optimized for specific purposes with maximal versatility of application.

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