I'm interested in using a Teensy to do AFSK demodulation. I have mark and space frequencies of 1200 and 1800 Hz. I did find some very old references here to APRS receivers, which use a similar encoding, but nothing that ever got very far.
I'm wondering if I should use the audio library and filter on these frequencies and do peak detection, or if it wouldn't be well suited to that. The symbol rate is 1200 baud, so I need to detect single cycles.
I have implemented this in GNU Radio using a quadrature demodulator, but my DSP skills are pretty limited.
Does anyone have thoughts on this?
Thanks-
Eric
I'm wondering if I should use the audio library and filter on these frequencies and do peak detection, or if it wouldn't be well suited to that. The symbol rate is 1200 baud, so I need to detect single cycles.
I have implemented this in GNU Radio using a quadrature demodulator, but my DSP skills are pretty limited.
Does anyone have thoughts on this?
Thanks-
Eric