fir

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

Functions
AFAPI array	fir (const array &b, const array &x)
	C++ Interface for finite impulse response filter. More...
AFAPI af_err	af_fir (af_array *y, const af_array b, const af_array x)
	C Interface for finite impulse response filter. More...

Detailed Description

This function implements a Finite Impulse Filter.

Finite impulse filters take an input x and a co-efficient array b to generate an output y such that:

   \f$y[n] = \sum_{i = 0}^N b_i . x[n]\f$

Function Documentation

af_fir()

AFAPI af_err af_fir	(	af_array *	y,
		const af_array	b,
		const af_array	x
	)

C Interface for finite impulse response filter.

Parameters

[out]	y	is the output signal from the filter
[in]	b	is the array containing the coefficients of the filter
[in]	x	is the input signal to the filter

fir()

AFAPI array fir	(	const array &	b,
		const array &	x
	)

C++ Interface for finite impulse response filter.

Parameters

[in]	b	is the array containing the coefficients of the filter
[in]	x	is the input signal to the filter

Returns

the output signal from the filter