NBFM Receive

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

(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

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

Source Files

Python files

[1]

Block definition

[2]