I am firmly new to DSP and just verifying, if my application can be fulfilled by ADAU1701. We use this DSP for audio enhancement and signal leveling. Now I am wondering, if it could also demodulate an FSK signal. In this case, we would not need an additional modem IC.
The requirements are really simple: frequency-shift between 1300 Hz and 2100 Hz; Modulation rate of 1200 baud
However, The FSK signal is transmitted along with default speech audio and I need to detect the FSK signal and mute it on one output channel.
I found approach for incoherent filters here. However, I cannot get it to work.
Thanks in advance.