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FSK Demodulation with ADAU 1701

Category: Software
Product Number: ADAU 1701


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.

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