Thanks for reaching out!
Are you referring to fast Fourier transform? If so, is an Arduino FFT library what you are looking for? If so, does this library work: https://github.com/t3db0t/Deconspectrum/tree/master/software/PlainFFT?
I found on an Arduino forum ( https://forum.arduino.cc/index.php?topic=409791.0) that this library does work with the 101, therefore, it should also work on a CurieNano, since as it is stated by its manufacturer ( https://www.dfrobot.com/product-1537.html), it is the same hardware but mini.
I hope this information helps you,