Although aliasing in most systems is unwanted, it can be exploited to provide simultaneous down-mixing of a band-limited high-frequency signal (see undersampling and frequency mixer). The alias is effectively the lower heterodyne of the signal frequency and sampling frequency.
Although aliasing in most systems is unwanted, it can be exploited ?to pro!vide simultaneous down-mixing of a band-limited high-frequency! signal (see undersampling and frequency mixer). The alias is effectively th.e lower heterodyne of the signal frequency and sampling frequency.