How to implement IIR filter code snippet?

Questions
5

Check Fb1 from miSCellaneous_lib quark. You can write it like this (supposed blockSize 64):

(
y = { 
	Fb1(
		{ |in| (in[0] + in[1]) / 2 }, 
		in: WhiteNoise.ar(0.3),
		inDepth: 2,
		leakDC: false
	) 
}.play
)

There’s a SMC paper on Fb1:

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