Threshold: Difference between revisions

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; High (''R'')
; High (''R'')
: Low threshold. Outputs 1 if input goes above it
: High threshold. Outputs 1 if input goes above it


; Initial value
; Initial value
: Value to output before the input reach one of the thresholds. Can be any value, not just 0 or 1.
: Value to output before the input reach one of the thresholds. Can be any value, not just 0 or 1.


== Example Flowgraph ==
== Example Flowgraphs ==


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.
=== Simple Example ===
 
This flowgraph can be found at [[Media:threshold_example.grc]]
 
[[File:Threshold_Example.png|800px]]
 
[[File:Threshold_Result.png]]
 
=== Advanced Example ===
 
This flowgraph can be found at [https://raw.githubusercontent.com/gnuradio/gnuradio/master/gr-pdu/examples/tags_to_pdu_example.grc]
 
[[File:Tags_to_pdu_fg.png|800px]]
 
=== Audio Example ===
 
The [[Audio_Source#Sound_detector_and_notifier|Sound detector and notifier]] example on the [[Audio Source]] page contains a simple threshold volume detector.


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

Latest revision as of 00:49, 7 January 2022

Output a 1 or zero based on a threshold value.

Test the incoming signal against a threshold. If the signal excedes the High value, it will change its output to 1, and if the signal falls below the Low value, it will change its output to 0.

Parameters

(R): Run-time adjustable

Low (R)
Low threshold. Outputs 0 if input goes below it
High (R)
High threshold. Outputs 1 if input goes above it
Initial value
Value to output before the input reach one of the thresholds. Can be any value, not just 0 or 1.

Example Flowgraphs

Simple Example

This flowgraph can be found at Media:threshold_example.grc

Threshold Example.png

Threshold Result.png

Advanced Example

This flowgraph can be found at [1]

Tags to pdu fg.png

Audio Example

The Sound detector and notifier example on the Audio Source page contains a simple threshold volume detector.

Source Files

C++ files
Here
Header files
Here
Public header files
Here
Block definition
Yaml