Detect the peak of a signalIf a peak is detected, this block outputs a 1, or it outputs 0's. A separate debug output may be connected, to view the internal EWMA described below. More...

#include <gr_peak_detector2_fb.h>

Inheritance diagram for gr_peak_detector2_fb:

[legend]

List of all members.

Public Member Functions
void	set_threshold_factor_rise (float thr)
	Set the threshold factor value for the rise time.
void	set_look_ahead (int look)
	Set the look-ahead factor.
void	set_alpha (int alpha)
	Set the running average alpha.
float	threshold_factor_rise ()
	Get the threshold factor value for the rise time.
int	look_ahead ()
	Get the look-ahead factor value.
float	alpha ()
	Get the alpha value of the running average.
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_peak_detector2_fb_sptr	gr_make_peak_detector2_fb (float threshold_factor_rise, int look_ahead, float alpha)

Detailed Description

Detect the peak of a signal

If a peak is detected, this block outputs a 1, or it outputs 0's. A separate debug output may be connected, to view the internal EWMA described below.

Parameters:

threshold_factor_rise	The threshold factor determins when a peak is present. An EWMA average of the signal is calculated and when the value of the signal goes over threshold_factor_rise*average, we call the peak.
look_ahead	The look-ahead value is used when the threshold is found to locate the peak within this range.
alpha	The gain value of a single-pole moving average filter

Member Function Documentation

float gr_peak_detector2_fb::alpha ( ) [inline]

Get the alpha value of the running average.

Returns:: alpha

Referenced by set_alpha().

int gr_peak_detector2_fb::look_ahead ( ) [inline]

Get the look-ahead factor value.

Returns:: look-ahead factor

void gr_peak_detector2_fb::set_alpha ( int alpha ) [inline]

Set the running average alpha.

Parameters:

alpha new alpha for running average

References alpha().

void gr_peak_detector2_fb::set_look_ahead ( int look ) [inline]

Set the look-ahead factor.

Parameters:

look	new look-ahead factor

void gr_peak_detector2_fb::set_threshold_factor_rise ( float thr ) [inline]

Set the threshold factor value for the rise time.

Parameters:

thr	new threshold factor

float gr_peak_detector2_fb::threshold_factor_rise ( ) [inline]

Get the threshold factor value for the rise time.

Returns:: threshold factor

int gr_peak_detector2_fb::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.

Friends And Related Function Documentation

gr_peak_detector2_fb_sptr gr_make_peak_detector2_fb	(	float	threshold_factor_rise,
		int	look_ahead,
		float	alpha
	)		`[friend]`

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

gr_peak_detector2_fb.h

Public Member Functions

Friends

Detailed Description

Member Function Documentation

Friends And Related Function Documentation