In DSP, sometimes the so-called Lattice Filters are use, having a structure like on this picture:

Lattice Filter

I wonder what the advantages of the Lattice structure are, compared to other FIR filter types and what the applications of Lattice filters are.

  • \$\begingroup\$ shameless advertising: this would fit greatly on signals.stackexchange.com, the sister site for signal processing. \$\endgroup\$ – Marcus Müller Aug 20 '17 at 20:37
  • \$\begingroup\$ 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. \$\endgroup\$ – Marcus Müller Aug 20 '17 at 20:39
  • \$\begingroup\$ 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. \$\endgroup\$ – Janka Aug 21 '17 at 0:20
  • \$\begingroup\$ so the only advantage of the Lattice filter is the possibility of using a unrolled loop? \$\endgroup\$ – T. Pluess Aug 21 '17 at 20:34

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