This function implements a Infinite Impulse Filter. More...

Functions

AFAPI array iir (const array &b, const array &a, const array &x)
 C++ Interface for infinite impulse response filter. More...
 
AFAPI af_err af_iir (af_array *y, const af_array b, const af_array a, const af_array x)
 C Interface for infinite impulse response filter. More...
 

Detailed Description

This function implements a Infinite Impulse Filter.

Iinite impulse filters take an input x and a feedforward array b, feedback array a to generate an output y such that:

\(\sum_{j = 0}^Q a_j . y[n] = \sum_{i = 0}^P b_i . x[n]\)

Function Documentation

◆ af_iir()

AFAPI af_err af_iir ( af_array y,
const af_array  b,
const af_array  a,
const af_array  x 
)

C Interface for infinite impulse response filter.

Parameters
[out]yis the output signal from the filter
[in]bis the array containing the feedforward coefficients
[in]ais the array containing the feedback coefficients
[in]xis the input signal to the filter
Note
The feedforward coefficients are currently limited to a length of 512

◆ iir()

AFAPI array af::iir ( const array b,
const array a,
const array x 
)

C++ Interface for infinite impulse response filter.

Parameters
[in]bis the array containing the feedforward coefficients
[in]ais the array containing the feedback coefficients
[in]xis the input signal to the filter
Returns
the output signal from the filter
Note
The feedforward coefficients are currently limited to a length of 512