Content originally posted in LPCWare by matthewcn on Mon May 30 01:11:14 MST 2016
hi,
I am using lpc1758 work as fft transformation and fft inverse transformation, after i downloaded <<NXP DSP Library 2.0>>
in pdf file <<AN10913_3.pdf>>, there is only FFT function, not FFT inverse function.
my question is:
(1) in FFT function, the parameter type is short int, how it represent decimal? is it Q15?
(2) why there is no fft inverse function, how can i achieve fft inverse transformation?
thank you!
