NBFM Receive

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Revision as of 19:31, 16 April 2022 by AlchemX (talk | contribs) (Corrected obvious copy-paste mistake. Quadrature rate for the RECEIVE block is the INPUT sample rate. and I saw this mistake also exists in the python block definition on GitHub ;).)
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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].

Parameters[edit]

(R): Run-time adjustable

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

Example Flowgraph[edit]

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

FunCube 2 meter NB FM fg.png

FunCube 2 meter NB FM out.png

Source Files[edit]

Python files
[1]
Block definition
[2]