/sci/ - Science & Math

>>14814427
Frequency modulation works like gif related. You slightly change the frequency of the carrier wave, depending on what the baseband signal is doing. Hopefully it's intuitive from the gif. If not, I can explain some more.

And you can do frequency modulation in software. I've done it in audacity using a special script. This is a demo: https://vocaroo.com/1n8qed7biNkq
You'll hear the "At the tone, 0 hours, 0 minutes, coordinated universal time" 3x. Then it switches to the modulated signal.

It's 10khz, fm modulation. 15khz was a little irritating. You can probably still pick out the voice "At the tone, 0 hours, 0 minutes, coordinated universal time".

>>6931318
with this wave (the signal) you now modulate the wave through which you want to transmit the information

Can you amplitude modulate a signal with a frequency higher than the carrier wave?