Simple Squelch
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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
(R): Run-time adjustable
- Threshold (R)
- Threshold for muting.
- Alpha
- Gain parameter for the running average filter.
Example Flowgraph
This flowgraph shows a Simple Squelch block in a working 2 meter receiver.
Source Files
- C++ files
- [1]
- Header files
- TODO
- Public header files
- TODO
- Block definition
- TODO