% scfig21 -- Short Course 21: Four Noisy Time-Frequency test signals
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% We display here four noisy versions of the signals in Figure 20.
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global yQuad yMish vBumps vDoppler tt
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% 	clf;
	versaplot(221,tt,yQuad,[],   ' 21 (a) Noisy QuadChirp ',[],[])
	versaplot(222,tt,yMish,[],   ' 21 (b) Noisy MishMash ',[],[])
	versaplot(223,tt,vBumps,[],  ' 21 (c) Noisy Bumps ',[],[])
	versaplot(224,tt,vDoppler,[],' 21 (d) Noisy Doppler ',[],[])
    
    
 
 
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