3 ms·
Do you have any recommendations for any particular techniques or software? I'd gladly try them.
by scarybeast 5y ago
Do you have any recommendations for any particular techniques or software? I'd gladly try them.
- bigbillheck 5y agoThe classical approach is a matched filter. Here's some references: https://www.rfcafe.com/references/articles/wj-tech-notes/fsk-signals-demodulation-v7-5.pdf https://www.rfcafe.com/references/articles/wj-tech-notes/fsk... http://edge.rit.edu/content/P09141/public/FSK.pdf http://edge.rit.edu/content/P09141/public/FSK.pdf There's lots of matlab code floating around out there, if you're willing to try gnuradio that'll work (for example: https://nccgroup.github.io/RFTM/fsk_receiver.html https://nccgroup.github.io/RFTM/fsk_receiver.html), and this looks promising: http://www.whence.com/minimodem/ http://www.whence.com/minimodem/ ETA: Audacity might be able to do it too : https://www.youtube.com/watch?v=tKNNnbgoGdI https://www.youtube.com/watch?v=tKNNnbgoGdI
- marcan_42 5y agoThis is how I've done it in the past, seems to work quite well on your wav file :) https://colab.research.google.com/drive/1Zvb6bQfC3thc5-39expyBkIg-3oHWEhF?usp=sharing https://colab.research.google.com/drive/1Zvb6bQfC3thc5-39exp...