ccg
Cohen's Class Generator
This repository contains code that generates time-frequency representations of Cohen's Class.
If the ccg.c file is compiled to a ccg executable, then the usage is:
Usage :
ccg -T[WVpcBCRP] [-w[hHbBr]] [-l#] [-i#] [-N#] [-s #] file
Options :
TW : Wigner
V : Wigner-Ville
p : Periodogram
c : Correlogram
B : Born-Jordan-Cohen
C : Choi-Williams
R : Rihaczek
P : Page
I : MIFFT
S : SWVD
s : Parameterized WVD
M : Median Filtered WVD
wh : hanning window
H : Hamming window
b : Blackman window
r : Rectangular window
B : Blackman-Harris window
l# : Window '#' long
i# : Time increment = '#'
N# : TFD plot '#' long
s# : Choi-Williams parameter '#'
X# : Cross terms, difference frequency '#'
Q : Quiet - no percentage done
For example, to generate the Wigner distribution of the file signal:
./ccg -TW signal > signal.wd
The file signal needs three lines at the beginning:
1
N
fs
followed by N signal samples. Here, 1 indicates the file type, N is the number of samples following the header (one per line), and fs is the sampling frequency.
