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Ctfrmmce

Minimum mean cross-entropy combination of spectrograms.

Calling Sequence

[TFR,T,F]=Ctfrmmce(X)
[TFR,T,F]=Ctfrmmce(X,H)
[TFR,T,F]=Ctfrmmce(X,H,T)
[TFR,T,F]=Ctfrmmce(X,H,T,N)

Parameters

X :

Analyzed signal.

H :

frequency smoothing windows, stored in a matrix. Each row is a window

T :

time instant(s) (default : 1:length(X)).

N :

number of frequency bins (default : length(X))

TFR :

time-frequency representation.

F :

vector of normalized frequencies.

Description

computes the minimum mean cross-entropy combination of spectrograms using aswindows the columns of the matrix H

Examples

x = hilbert(sin(2*%pi*0.25*(1:128))+0.5*rand(1,128,'normal'));
h(10+(-5:5),1)=Cwindow(11,'gauss'); h(10+(-7:7),2)=Cwindow(15,'gauss');
h(10+(-9:9),3)=Cwindow(19,'gauss'); [tfr,T,F]=Ctfrmmce(x,h);
grayplot(T,F,tfr');  xlabel('time'); ylabel('frequency')

See also

Authors


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