Dear All,
I need to set a mechanical vibration measurement. The setup has a
piezoelectric accelerometer, amplifier, a 16-bit ADC (up-to 500kHz).
I will save the sampled acceleration data stream a(t) and then using FFT
to convert it to the frequency domain a(f).
With FFT I need to cover the spectral range of 1Hz-1kHz, maybe going from
sub-Hz.
Questions:
(1) What is the suggested sampling rate? How many samples is needed for
the FFT?
(2) What is the suggested size and hop distance of the FFT window (I guess
using Hanning window)?
(3) Could you please suggest C-code for FFT and sliding windowing that I
could implement?
I really appreciate all your help
Peter (pr two zero at cornell dot edu)
