GNU Radio 3.6.5 C++ API
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Detect the peak of a signal. More...
#include <peak_detector2_fb.h>
Public Types | |
typedef boost::shared_ptr < peak_detector2_fb > | sptr |
Public Member Functions | |
virtual void | set_threshold_factor_rise (float thr)=0 |
Set the threshold factor value for the rise time. | |
virtual void | set_look_ahead (int look)=0 |
Set the look-ahead factor. | |
virtual void | set_alpha (int alpha)=0 |
Set the running average alpha. | |
virtual float | threshold_factor_rise ()=0 |
Get the threshold factor value for the rise time. | |
virtual int | look_ahead ()=0 |
Get the look-ahead factor value. | |
virtual float | alpha ()=0 |
Get the alpha value of the running average. | |
Static Public Member Functions | |
static sptr | make (float threshold_factor_rise=7, int look_ahead=1000, float alpha=0.001) |
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.
virtual float gr::blocks::peak_detector2_fb::alpha | ( | ) | [pure virtual] |
Get the alpha value of the running average.
Implemented in gr::blocks::peak_detector2_fb_impl.
virtual int gr::blocks::peak_detector2_fb::look_ahead | ( | ) | [pure virtual] |
Get the look-ahead factor value.
Implemented in gr::blocks::peak_detector2_fb_impl.
static sptr gr::blocks::peak_detector2_fb::make | ( | float | threshold_factor_rise = 7 , |
int | look_ahead = 1000 , |
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float | alpha = 0.001 |
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) | [static] |
Build a peak detector block with float in, byte out.
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. |
virtual void gr::blocks::peak_detector2_fb::set_alpha | ( | int | alpha | ) | [pure virtual] |
Set the running average alpha.
alpha | new alpha for running average |
Implemented in gr::blocks::peak_detector2_fb_impl.
virtual void gr::blocks::peak_detector2_fb::set_look_ahead | ( | int | look | ) | [pure virtual] |
Set the look-ahead factor.
look | new look-ahead factor |
Implemented in gr::blocks::peak_detector2_fb_impl.
virtual void gr::blocks::peak_detector2_fb::set_threshold_factor_rise | ( | float | thr | ) | [pure virtual] |
Set the threshold factor value for the rise time.
thr | new threshold factor |
Implemented in gr::blocks::peak_detector2_fb_impl.
virtual float gr::blocks::peak_detector2_fb::threshold_factor_rise | ( | ) | [pure virtual] |
Get the threshold factor value for the rise time.
Implemented in gr::blocks::peak_detector2_fb_impl.