Online "live" example
The qualitative furnishings of aliasing can be heard in the afterward audio demonstration. Six denticulate after-effects are played in succession, with the aboriginal two sawtooths accepting a axiological abundance of 440 Hz (A4), the additional two accepting axiological abundance of 880 Hz (A5), and the final two at 1760 Hz (A6). The sawtooths alternating amid bandlimited (non-aliased) sawtooths and aliased sawtooths and the sampling amount is 22.05 kHz. The bandlimited sawtooths are actinic from the denticulate waveform's Fourier alternation such that no accord aloft the Nyquist abundance are present.
The aliasing baloney in the lower frequencies is added accessible with college axiological frequencies, and while the bandlimited denticulate is still bright at 1760 Hz, the aliased denticulate is base and acrid with a active aural at frequencies lower than the fundamental.
Sawtooth aliasing demo
440 Hz bandlimited, 440 Hz aliased, 880 Hz bandlimited, 880 Hz aliased, 1760 Hz bandlimited, 1760 Hz aliased
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editDirection finding
A anatomy of spatial aliasing can aswell action in antenna arrays or microphone arrays acclimated to appraisal the administration of accession of a beachcomber signal, as in geophysical analysis by seismic waves. After-effects have to be sampled at added than two credibility per wavelength, or the beachcomber accession administration becomes ambiguous.
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