SDKZSPF LSI, SDKZSPF Datasheet - Page 341

• Manufacturer Part Number: SDKZSPF
• Manufacturer: LSI

Specifications of SDKZSPF

• Lead Free Status / Rohs Status: Supplier Unconfirmed

E.7
E.7.1
API Specification for IIR Biquad Library Function on G2
IIR Biquad
Synopsis
void lib_IIRBIQ(short *indata, short *coef, short *state, short N-1)
Input
Short *indata
Short *coef
Short *state
Short N-1
Return
None
Output
Output is returned in the “indata” input data vector.
Description
This function implements an in-place Biquad Infinite Impulse Response
(IIR) filter.
Dependencies/Assumptions
The input data is assumed to be in Q1.15 format.
The number of taps in the filter “T” must be a multiple of 2.
Coefficients are stored as -a11/2, a21/2, b11/2, b21/2 -a21/2, a22/2,
b21/2, b22/2.
Input data is stored 0, In(0), In(1), ..., In(N).
API Specification for IIR Biquad Library Function on G2
Copyright © 1999-2003 by LSI Logic Corporation. All rights reserved.
Pointer to input data.
Coefficient vector.
Intermediate state of the filter.
Length of the input data vector.
E-9