I'm hoping someone - anyone can answer a question on the Siglib library call to perform an FFT on data.
There's no examples anywhere I can find that provide a real application using data from an ADC, so that's where my wheels are spinning.
The examples from Numerix have only canned data, generated by the function
SDA_SignalGenerate. Specifically, in the FFT example, SDA_SignalGenerate is passed a value of $0.15625$ for frequency. Can anyone provide some insight as to what this represents? The
FFT_LENGTH of the FFT function is $512$, but I do not see what the
SDA_SignalGenerate frequency of $0.15625$ means, or what it is normalized to.
Thanks for any help anyone can provide.