In DSP, sometimes the so-called Lattice Filters are use, having a structure like on this picture:
I wonder what the advantages of the Lattice structure are, compared to other FIR filter types and what the applications of Lattice filters are.
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shameless advertising: this would fit *greatly* on http://signals.stackexchange.com, the sister site for signal processing. – Marcus Müller Aug 20 '17 at 20:37
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also, there's something off about the specific shape this picture shows. The last summer in the lower row is superfluous if you don't plan to output that internal state. – Marcus Müller Aug 20 '17 at 20:39
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What you have here is an **unrolled loop**. You can feed the output of each stage into the very same function again and again, only changing k. Try rolling this up into a loop. See how simple your program becomes. – Janka Aug 21 '17 at 00:20
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so the only advantage of the Lattice filter is the possibility of using a unrolled loop? – T. Pluess Aug 21 '17 at 20:34