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Time Frequency Toolbox >> Time Frequency Toolbox > Post-Processing or Help to the Interpretation > tfrideal

tfrideal

Ideal TFR for given instantaneous frequency laws.

Calling Sequence

[TFR,T,F]=tfrideal(IFLAWS)
[TFR,T,F]=tfrideal(IFLAWS,T,)
[TFR,T,F]=tfrideal(IFLAWS,T,N)
[TFR,T,F]=tfrideal(IFLAWS,T,N,TRACE)
[TFR,T,F]=tfrideal(...,'plot')

Parameters

IFLAWS :

(M,P)-matrix where each column corresponds to the instantaneous frequency law of an (M,1)-signal, These P signals do not need to be present at the same time. The values of IFLAWS must be between 0 and 0.5.

T :

the time instant(s) (default : 1:M).

N :

number of frequency bins (default : M).

TRACE :

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

'plot':

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

TFR :

output time-frequency matrix, of size (N,length(t)).

F :

vector of normalized frequencies.

Description

tfridealgenerates the ideal time-frequency representation corresponding to the instantaneous frequency laws of the components of a signal.

Examples

N=140; t=0:N-1; [x1,if1]=fmlin(N,0.05,0.3);
[x2,if2]=fmsin(70,0.35,0.45,60);
if2=[zeros(35,1)*%nan;if2;zeros(35,1)*%nan];
tfrideal([if1 if2],'plot');

Authors

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