Apodization

An example of apodization is the use of the Hann window in the fast Fourier transform analyzer to smooth the discontinuities at the beginning and end of the sampled time record.

The software allows “apodization”, the removal of the front and back section of the transient signal from consideration in the FT calculation.

Another way to improve the quality of the transient is to wait to collect data until ions have settled into stable oscillatory motion within the trap.

Typically, NMR signals are truncated due to time constraints (indirect dimension) or to obtain a higher signal-to-noise ratio.

[4] [page needed] In medical ultrasonography, the effect of grating lobes can be reduced by activating ultrasonic transducer elements using variable voltages in apodization process.

The same optical effect can be achieved by combining depth-of-field bracketing with multi exposure, as implemented in the Minolta Maxxum 7's STF function.

One has to understand that the image formed in the focal plane of a lens (or a mirror) is modeled through the Fresnel diffraction formalism.