Difference between revisions of "CTCSS Squelch"

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m (add default values)
 
Line 6: Line 6:
  
 
; Sampling Rate  
 
; Sampling Rate  
: Gain of the internal frequency filters.
+
: sample rate (Hz)
  
 
; Tone Frequency (''R'')
 
; Tone Frequency (''R'')
: Frequency value to use as the squelch tone.
+
: Frequency value to use as the squelch tone (default: 100.0)
  
 
; Level (''R'')
 
; Level (''R'')
: threshold level for the squelch tone.
+
: threshold level for the squelch tone (default: 0.01)
  
 
; Length  
 
; Length  
: length of the frequency filters.
+
: length of the frequency filters (default: 0)
  
 
; Ramp  
 
; Ramp  
: Attack / release time in samples; a sinusodial ramp is used. set to 0 to disable.
+
: Attack / release time in samples; a sinusodial ramp is used. set to 0 to disable (default: 0)
  
 
; Gate  
 
; Gate  
: if true, no output if no squelch tone. if false, output 0's if no squelch tone.
+
: if true, no output if no squelch tone. if false, output 0's if no squelch tone (default: False)
  
 
== Example Flowgraph ==
 
== Example Flowgraph ==

Latest revision as of 21:06, 28 November 2020

Gate, or zero output if CTCSS tone not present

Parameters[edit]

(R): Run-time adjustable

Sampling Rate
sample rate (Hz)
Tone Frequency (R)
Frequency value to use as the squelch tone (default: 100.0)
Level (R)
threshold level for the squelch tone (default: 0.01)
Length
length of the frequency filters (default: 0)
Ramp
Attack / release time in samples; a sinusodial ramp is used. set to 0 to disable (default: 0)
Gate
if true, no output if no squelch tone. if false, output 0's if no squelch tone (default: False)

Example Flowgraph[edit]

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.

Source Files[edit]

C++ files
TODO
Header files
TODO
Public header files
TODO
Block definition
TODO