SDKZSPF LSI, SDKZSPF Datasheet - Page 343

• Manufacturer Part Number: SDKZSPF
• Manufacturer: LSI

Specifications of SDKZSPF

• Lead Free Status / Rohs Status: Supplier Unconfirmed

E.9
E.9.1
API Specification for Synthesis Lattice Filter Library
Function on G2
Synthesis Lattice Filter
Synopsis
short lib_lattice(short *b, short n, short *k)
Input
Short *b
Short n
Short *k
Output
Short f
Description
This function implements a Lattice filter. The lattice is a synthesis filter
which calculates the following loop:
f -= b[n - 1] * k[n - 1];
for (i = n - 2; i >= 0; i--) {
f -= b[i] * k[i];
b[i + 1] = b[i] + (k[i] * f);
where “n” is the order for the filter, “k” and “b” are coefficients and “f” is
the “forward result”
The variables f, b[i],k[i] and k are in q15 format.
API Specification for Synthesis Lattice Filter Library Function on G2
Copyright © 1999-2003 by LSI Logic Corporation. All rights reserved.
Array of filter coefficients
Number of data samples
Array of filter coefficients
Result of forward synthesis
{
E-11