THE COMPARISION OF TWO VARIANTS FOR INVERSE FFT :

A) fft0 -i perform inverse FFT; in this case, the standard input should be in the form
generated by `fft -c', and the standard output is a series of samples.

B) fft0 -I Perform inverse FFT as above, but using input generated by `fft -p'.


From: Sun Nov 6 09:24:58 GMT 2016     To: Sun Nov 13 14:56:00 GMT 2016



A graph of a simple
sinus with one basic
freq 0.1007987 Hz

(A)

Unnormalized complex FFT for sinus:
real components on first figure,
imaginary components
on second figure.

Reverted Sinus From
Unnormalized complex FFT

(B)

Magnitude and phase of
complex FFT for sinus:
Magnitude on first figure,
phase on second figure.

Reverted Sinus From
Magnitude And Phase
complex FFT

(C)
A graph of response
a simple device
on Delta input signal

(A)

Unnormalized complex FFT for response:
real components on first figure,
imaginary components
on second figure.

Reverted Response From
Unnormalized complex FFT

(B)

Magnitude and phase of
complex FFT for Response:
Magnitude on first figure,
phase on second figure.

Reverted Response From
Magnitude And Phase
complex FFT