Howtosignalprocessing
What is AFSK signal?
Audio frequency-shift keying (AFSK) is a modulation technique by which digital data is represented by changes in the frequency (pitch) of an audio tone, yielding an encoded signal suitable for transmission via radio or telephone.
What is AFSK1200?
AFSK1200, or Bell 202 modem
AFSK1200 encodes digital binary data at a data-rate of 1200b/s. It uses the frequencies 1200Hz and 2200Hz ( center frequency of 1700Hz ±500 Hz) to encode the '0's and '1's (also known as space and mark) bits.
