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Time Frequency Toolbox >> Time Frequency Toolbox > Bilinear Time-Frequency Processing in the Cohen's Class > tfrmmce

tfrmmce

Minimum mean cross-entropy combination of spectrograms.

Calling Sequence

[TFR,T,F]=tfrmmce(X,H)
[TFR,T,F]=tfrmmce(X,H,T)
[TFR,T,F]=tfrmmce(X,H,T,N)
[TFR,T,F]=tfrmmce(X,H,T,N,TRACE)
[TFR,T,F]=tfrmmce(...,'plot')

Parameters

X :

signal.

H :

frequency smoothing windows, the H(:,i) being normalized so as to be of unit energy.

T :

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

N :

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

TRACE :

if nonzero, the progression of the algorithm is shown (default : 0).

'plot':

if one input parameter is 'plot', tfrmh runs tfrqview. and TFR will be plotted

TFR :

time-frequency representation.

F :

vector of normalized frequencies.

Description

tfrmmce computes the minimum mean cross-entropy combination of spectrograms using as windows the columns of the matrix H.

Examples

sig=fmlin(128,0.1,0.4); h=zeros(19,3);
h(10+(-5:5),1)=tftb_window(11); h(10+(-7:7),2)=tftb_window(15);
h(10+(-9:9),3)=tftb_window(19); tfrmmce(sig,h,'plot');

Authors

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