Aliased Frequency Aliasing comes from two sources: cos( ) = cos(2 n ) cos( ) = cos( 2 n) The equations above are true for any integer n.

Information is generally lost in such discretization processes. Today we discussed two mechanisms that can alter the information con-tained in a signal: aliasing and quantization. Next time, we will develop …

What does aliasing mean for noise at the high frequency end of the spectrum? about this scenario. Suppose we have a spectrum that is basically red, like most geophysical spectra, but at high …

How to Sample? Reconstructed signal might be very different from original: “aliasing”

How should this be done in computer graphics? Aliases [ and (2 - )] are indistinguishable after sampling! All physical displays recreate a continuous image from a discrete sampled image by using a finite …

The result of under-sampling is called aliasing, from the word alias, meaning taking a false name such as for deception. Time series analysis (today almost always using sampled data) is briefly covered in …

Unfortunately, due to historical reasons, the terms \Nyquist rate" and \Nyquist frequency" are sort of opposite in meaning: The Nyquist rate is the lowest sampling rate at which you can sample a signal …