Auto Filter: As a Serial and Parallel filter

[Teenage Engineering OP-2]

Hey everyone,

I have a question from the perspective of a new Live user with limited familiarity with synths with more than a single filter.

1) Is my understanding correct that the Auto Filter can be a serial or parallel filter? When added to the device chain, but not so far to the end that it is separated from the Instrument by the thin dividing bar, it is acting as a serial filter. However, when added to the device chain after the dividing bar, it acts as a parallel filter.
2) Since the Auto Filter has the beautiful new 9.5 filters, can it also be used as the only filter in the device chain by negating the preceding instruments' filter? For example, if using Collision, is its filter completely negated by setting it to either fully open LP & no Resonance or HP at minimum frequency & no Res., allowing Auto Filter to be the only active filter?

Thank you for any help.

[Teenage Engineering OP-2]

Can anyone help clarify this?

[Angstrom]

Ok
1- serial/parallel . you are a little off with the serial / parallel conception. As I understand you anyway.
When Autofilter is placed directly after a device chain it will effect that chain 100% serial. Regardless of whether it is immediately after the instrument or right at the very very end it will be serial. The little lines mean nothing ... What matters is left to right flow. Instrument->effect->effect | effect
It's all serial until you get effectracks and subracks involved.

Now, to make Autofilter (or any processor) parallel you need to to group it into an effect rack. Once in its own effectrack it will exist in a "chain". If you then make a second chain with no effect on this will be "dry". Chain 1 will be "wet", filtered by Autofilter

2: is it possible to replace the device filters with the Autfilter models?
Yes and no. You could deactivate the device filter and place the Autofilter after it and it will (as I explained) sit 100% wet and serial on that audio stream. However, routing an external MIDI triggered envelope to Autofilter is more difficult. The Autofilter env is audio triggered, and thats not really good enough in most cases.

Having said that - most of the devices do now include the new filter models, so they are often available in-device.

[Teenage Engineering OP-2]

Thank you for the explanations!

I had thought the slightly thicker dividing bar (as between Erosion and Flanger below) indicated a parallel signal. I do understand it means that Flanger is applied to all chains in the rack.

Ok
1- serial/parallel . you are a little off with the serial / parallel conception. As I understand you anyway.

This area is new to me, so it's quite likely I have something wrong. My understanding is this: a serial effects chain is when 2+ effects are processing a signal in a series, one after the other, whereas a parallel effects chain is when a signal is processed simultaneously by 2+ effects. Is that correct?

Now, to make Autofilter (or any processor) parallel you need to to group it into an effect rack. Once in its own effectrack it will exist in a "chain". If you then make a second chain with no effect on this will be "dry". Chain 1 will be "wet", filtered by Autofilter

Though if I understand you correctly, does a parallel effect actually mean that it processes 2+ signals simultaneously?