NBFM Receive: Difference between revisions

Revision as of 14:20, 23 October 2019

Narrow Band FM Receiver.

Takes a single complex baseband input stream and produces a single float output stream of audio sample in the range [-1, +1].

Audio rate: Sample rate of audio stream, >= 16k (integer)
Quadrature rate: Sample rate of output stream (integer). Must be an integer multiple of Audio rate.
Tau: Preemphasis time constant (float)
Max deviation (R): Maximum deviation in Hz (float)

This flowgraph shows a NBFM Receive block in a working 2 meter receiver.

@@ Line 14: / Line 14: @@
 == 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 shows a NBFM Receive block in a working 2 meter receiver.
+[[File:FunCube_2_meter_NB_FM_fg.png|800px]]
+[[File:FunCube_2_meter_NB_FM_out.png|800px]]
 == Source Files ==