Linear combination of elementary Gaussian atoms.
[SIG,LOCATOMS] = atoms(N,COORD,DISPLAY)
number of points of the signal
matrix of time-frequency centers, of the form [t1,f1,T1,A1;...;tM,fM,TM,AM]. (ti,fi) are the time-frequency coordinates of atom i, Ti is its time duration and Ai its amplitude. Frequencies f1..fM should be normalized (between 0 and 0.5). If nargin==1, the location of the atoms will be defined by clicking with the mouse, with the help of a menu. The default value for Ti is N/4.
output signal.
matrix of time-frequency coordinates and durations of the atoms.
atoms generates a signal consisting in a linear combination of elementary gaussian wave packets. The locations of the time-frequency centers of the different atoms are either fixed by the input parameter COORD or successively defined by clicking with the mouse (if NARGIN==1).