De-zipper| How does it work?

[Father]

Hi. I was wondering how De-zipper prime works? Is it a filter like this thats being processed for each sample?

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Out = coeff * (Old_In - In) + In;

We use it a lot, but no significant CPU usage, how is that possible? I guess it only works when the input has been changed..

[martinvicanek]

As far as I can tell, it calculates a new target at hop(128) and then approaches that with linear segments. Something like this, but with configurable slope:

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streamin in; streamout out;

float step;

hop(128) { step = (in - out)/128; }

out = out + step;