They choose the domain in which to process a signal by making an informed assumption (or by trying different possibilities) as to which domain best represents the essential characteristics of the signal and the processing to be applied to it.
Oni biraju domen u kome će obrađivati signal praveći informisanu pretpostavku (ili isprobavajući različite mogućnosti) prema kom domenu najbolje predstavljaju suštinske karakteristike signala i obradu koju treba primeniti na njega.