gr_single_pole_iir_filter_ff Class Reference

single pole IIR filter with float input, float output More...

#include <gr_single_pole_iir_filter_ff.h>

Inheritance diagram for gr_single_pole_iir_filter_ff:

List of all members.

Public Member Functions
	~gr_single_pole_iir_filter_ff ()
void	set_taps (double alpha)
int	work (int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items)
	just like gr_block::general_work, only this arranges to call consume_each for you
Friends
GR_CORE_API gr_single_pole_iir_filter_ff_sptr	gr_make_single_pole_iir_filter_ff (double alpha, unsigned int vlen)

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Detailed Description

single pole IIR filter with float input, float output

The input and output satisfy a difference equation of the form \f{ y[n] - (1-alpha) y[n-1] = alpha x[n] \f}

with the corresponding rational system function \f{ H(z) = \frac{alpha}{1 - (1-alpha) z^{-1}} \f}

Note that some texts define the system function with a + in the denominator. If you're using that convention, you'll need to negate the feedback tap.

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Constructor & Destructor Documentation

gr_single_pole_iir_filter_ff::~gr_single_pole_iir_filter_ff

(

)

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Member Function Documentation

void gr_single_pole_iir_filter_ff::set_taps

(

double

alpha

)

int gr_single_pole_iir_filter_ff::work	(	int	noutput_items,
		gr_vector_const_void_star &	input_items,
		gr_vector_void_star &	output_items
	)		[virtual]

just like gr_block::general_work, only this arranges to call consume_each for you

The user must override work to define the signal processing code

Implements gr_sync_block.

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Friends And Related Function Documentation

GR_CORE_API gr_single_pole_iir_filter_ff_sptr gr_make_single_pole_iir_filter_ff	(	double	alpha,
		unsigned int	vlen
	)		[friend]

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

• gr_single_pole_iir_filter_ff.h