Disadvantage: The waveforms 
(templates) have to be stored 
internally prior to this selection. 
Creates the upper and lower 
boundary (template) from the 
source signal, not from an 
internally stored waveform. 
Advantage: No need to store the 
waveforms prior to this selection. 
Disadvantage: The template shape 
is proportional to the source 
signal. The distance (allowance) 
between the source signal and the 
upper and lower template is the 
same.