Difference between revisions of "Peak Detector2"

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(add example flowgraph and output)
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== Example Flowgraph ==
== Example Flowgraph ==

Insert description of flowgraph here, then show a screenshot of the flowgraph and the output if there is an interesting GUI. Currently we have no standard method of uploading the actual flowgraph to the wiki or git repo, unfortunately. The plan is to have an example flowgraph showing how the block might be used, for every block, and the flowgraphs will live in the git repo.
This flowgraph can be found at [https://github.com/gnuradio/gnuradio/blob/master/gr-blocks/examples/peak_detector2.grc].
== Example Output ==

== Source Files ==
== Source Files ==

Latest revision as of 14:13, 9 March 2021

Detect the peak of a signal.

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


(R): Run-time adjustable

TH factor rise (R)
Determines when a peak is present. An average of the input signal is calculated (through a single-pole autoregressive filter) and when the value of the input signal goes over threshold_factor_rise*average, we assume we are in the neighborhood of a peak. The block will then find the position of the maximum within a window of look_ahead samples starting at the point where the threshold was crossed upwards.
Look ahead (R)
Used when the threshold is found to look if there another peak within this step range.
Alpha (R)
One minus the pole of a single-pole autoregressive filter that evaluates the average of the input signal.

Example Flowgraph[edit]

This flowgraph can be found at [1].

Peak detector2 fg.png

Example Output[edit]

Peak detector2 out.png

Source Files[edit]

C++ files
Header files
Public header files
Block definition