Simple Squelch

From GNU Radio
Revision as of 13:16, 19 January 2022 by MubashiraZaman (talk | contribs) (→‎Source Files)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Simple squelch block based on average signal power and threshold in dB. The output equals the input if the average input is >= the threshold, and zero otherwise.

The average is computed using a Single Pole IIR filter. It uses the magnitude squared for both averaging and for comparing to the threshold.

Parameters[edit]

(R): Run-time adjustable

Threshold (R)
Threshold for muting.
Alpha
Gain parameter for the running average filter.

Example Flowgraph[edit]

This flowgraph shows a Simple Squelch block in a working 2 meter receiver.

FunCube 2 meter NB FM fg.png

Source Files[edit]

C++ files
simple_squelch_cc_impl.cc
Header files
simple_squelch_cc_impl.h
Public header files
TODO
Block definition
analog_simple_squelch_cc.block.yml