Computing analytical signal using FFT in C++Report
I’m currently lost trying to figure out how to implement an equivalent version of MATLAB’s
hilbert() function in C++. I’m very new to signal processing, but, ultimately, I would like to figure out a way to phase shift any given signal by 90 degrees. I was attempting to follow the method suggested in this question on MATLAB central, which appears to work based on tests using GNU Octave.
I have what I believe to be a working implementation of both FFT and the inverse FFT, and I have tried implementing the method described in the answer to this post in order to compute the analytical signal. I have tried doing this by applying the FFT, setting the upper half of the array to zero, and then applying the inverse FFT, but, based on graphs I made of output from a test, there must be a problem with the way I have implemented finding the analytical signal.
What would be a suitable way to implement the
hilbert() function from MATLAB in C++ given a working implementation of FFT and inverse FFT? Is there a better way of achieving the 90 degree phase shift?
solved 04 months 1 Answer 27 views 0