Difference between revisions of "NBFM Receive"

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

Latest revision as of 19:31, 16 April 2022

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]