Time-Frequency Representations and Local Autocorrelation |
timecorr(v, t, f, s, [d]) Returns a matrix containing the samples of a time-dependent autocorrelation function for a signal v, type t, l number of lags, step size s, and an optional scalar or matrix argument d.
timefreq(v, t, f, s, [d]) Returns a matrix containing the bilinear time-frequency representation for a signal v, type t, f number of frequencies, step size s, and an optional scalar or matrix argument d.
Value of t |
Representation |
"wigner" |
Wigner |
"cone" |
Cone |
"bornjordan" |
Born-Jordan |
"marghill" |
Margenau-Hill |
"choiwill" |
Choi-Williams |
"custom" |
custom kernel in the time-lag plane |
When t is "custom", only v, s, and the following argument are required: