WBFM Receive PLL: Difference between revisions
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; Audio Decimation | ; Audio Decimation | ||
: How much to decimate quad_rate to get to audio. (integer) | : How much to decimate quad_rate to get to audio. (integer) | ||
; Deemphasis Tau | |||
: Deemphasis time constant (float) - typically 75e-6 (US) or 50e-6 (Europe) | |||
== Example Flowgraph == | == Example Flowgraph == | ||
This flowgraph shows the stereo version of the WBFM receiver. The flowgraph file can be found in https://github.com/ | This flowgraph shows the stereo version of the WBFM receiver. The flowgraph file can be found in https://github.com/gnuradio/gnuradio/blob/master/gr-analog/examples/USRP_FM_stereo.grc | ||
[[File:USRP_FM_stereo_pll.png|803px]] | [[File:USRP_FM_stereo_pll.png|803px]] | ||
Latest revision as of 18:09, 22 August 2023
Hierarchical block for demodulating a broadcast FM signal.
The input is the downconverted complex baseband signal (gr_complex).
The output is the demodulated audio (float)
Compared to WBFM Receive, this one does a full stereo demodulation.
Parameters
- Quadrature Rate
- Input sample rate of complex baseband input. (float)
- Audio Decimation
- How much to decimate quad_rate to get to audio. (integer)
- Deemphasis Tau
- Deemphasis time constant (float) - typically 75e-6 (US) or 50e-6 (Europe)
Example Flowgraph
This flowgraph shows the stereo version of the WBFM receiver. The flowgraph file can be found in https://github.com/gnuradio/gnuradio/blob/master/gr-analog/examples/USRP_FM_stereo.grc
Source Files
- Python files
- [1]
- Block definition
- [2]