https://github.com/dsward2/wfm-tools

Some DSP tools for FM demodulation
https://github.com/dsward2/wfm-tools

Last synced: about 2 months ago
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Some DSP tools for FM demodulation

• Host: GitHub
• URL: https://github.com/dsward2/wfm-tools
• Owner: dsward2
• Created: 2018-07-28T04:57:23.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2018-03-11T10:05:39.000Z (over 8 years ago)
• Last Synced: 2025-01-20T06:44:34.938Z (over 1 year ago)
• Language: C++
• Homepage:
• Size: 10.7 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# wfm-tools

Some WFM-related demodulation tools.

Required libraries: liquid-dsp, libsndfile

## Compiling

`cd` to any of the subdirectories and run:

    ./autogen.sh && ./configure && make

## fm-squash

## stereodemux

Decode the stereo separation from an FM multiplex carrier.

Input: 16-bit FM demodulated PCM signal sampled at 171 kHz (or another rate

specified with `-r`)

Output: 16-bit stereo PCM at above rate

Listening to stereo broadcasts with `rtl_fm` and SoX:

    rtl_fm -M fm -l 0 -A std -p 0 -s 171k -g 20 -F 9 -f 90.0M | \

      ./demux | \

      play -q -t .s16 -r 171k -c 2 -

## Copyright

(c) OH2EIQ. MIT license.