I found it. This is what I found on FM/FSK
carrier-tracking:
audio_rate = 2;
alpha = 5 * 0.25 * math.pi / (audio_rate);
beta = alpha * alpha / 4.0
max_freq = -2.0*math.pi*18970/audio_rate;
min_freq = -2.0*math.pi*19030/audio_rate;
stereo_ca
Hello,
I just created my first 2-level FSK demodulator and
would like to add carrier-tracking to find the carrier
frequency. Since some RF signals are offset by about
5kHz. I need a way to zero in on the frequency to
compensate for the offset. Is there a block that
performs this function? Or,
