I have a .wav file of human speech sampled at 48kHz. Before making the analytic signal with:
hilbert(s_real)
lets say in range 200 - 3,500 Hz, I probably need to do pass-band filtering, say 300 - 3,400 Hz. Does it matter for subsequent Hilbert transform, what type of filter is applied: Bessel, Butterworth, Chebyshev or Elliptic?