biquad Struct Reference

State and coefficients for a single biquad filter section. More...

#include <biquad.h>

Data Fields
smp_type	a0
smp_type	a1
smp_type	a2
smp_type	a3
smp_type	a4
smp_type	x1
smp_type	x2
smp_type	y1
smp_type	y2

Detailed Description

State and coefficients for a single biquad filter section.

The five a-coefficients encode the filter transfer function: y[n] = a0*x[n] + a1*x[n-1] + a2*x[n-2] - a3*y[n-1] - a4*y[n-2]

x1, x2 hold the two most recent input samples ("delay line"). y1, y2 hold the two most recent output samples.

Definition at line 47 of file biquad.h.

Field Documentation

a0

smp_type biquad::a0

Definition at line 48 of file biquad.h.

a1

smp_type biquad::a1

Definition at line 48 of file biquad.h.

a2

smp_type biquad::a2

Definition at line 48 of file biquad.h.

a3

smp_type biquad::a3

Definition at line 48 of file biquad.h.

a4

smp_type biquad::a4

Definition at line 48 of file biquad.h.

x1

smp_type biquad::x1

Definition at line 49 of file biquad.h.

x2

smp_type biquad::x2

Definition at line 49 of file biquad.h.

y1

smp_type biquad::y1

Definition at line 50 of file biquad.h.

y2

smp_type biquad::y2

Definition at line 50 of file biquad.h.

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The documentation for this struct was generated from the following file:

• include/biquad.h