Putting Undersampling to Work Aliasing To avoid aliasing, we know from the Nyquist criterion that we must digitize a signal at a sampling rate of at least twice the bandwidth of the signal. For 'baseband' signals with frequency components starting at DC and extending up to some maximum ...
Sampling rateNyquist frequencyWind analysisMissing wind dataIn wind measurement, the sampling rate is one of the most crucial factors in wind data acquisition to yield good accuracy for wind analysis and wind resource assessment. To avoid aliasing problems, wind speed and direction are measured at ...
The sampling theorem is easier to show when applied to sampling-rate conversion in discrete-time, i.e., when simple downsampling of a discrete time signal is being used to reduce the sampling rate by an integer factor. In analogy with the continuous-time aliasing theorem of §D.2, the do...
The minimum sampling rate required to avoid aliasing, as we have seen, is twice the one-sided bandwidth of the modulated navigation signal. However, these signals typically carry different information in their I and Q phase components. Sometimes, these two signals in orthogonal phases, and carryin...
Are there any considerations I have to take into account to avoid aliasing if the ADS1220 is set to 20Hz and I only read out at 10Hz? I am also thinking about using AC excitation at 20Hz and average to get down to 10Hz, but that's just the geek inside me talking...
The effect of sampling rate and anti-aliasing filters on high-frequency response spectra, Bull. Earthq. Eng. 12, no. 1, 203-216.Boore, David M., and Christine A. Goulet. "The effect of sampling rate and anti-aliasing filters on high- frequency response spectra." Bulletin of earthquake ...
The sinc ringing frequency must be higher than twice that of the highest possible frequency we want to sample. Not meeting the requirements will cause distortions, called aliasing distortions. Let us examine sampling of a sine wave with frequency above half of the sampling rate. The red wave ...
aliasing. Let’s say you are working at 48kHz. At that rate, audio will begin to alias at 24kHz, the Nyquist frequency. The plug‑in applies a series of filters and techniques to accurately represent your signal at a much higher rate, say 192kHz. Nyquist is now at 96kHz, providing...
The aliasing effect is a measurement error in the signal occurring due to an incorrectly set sampling rate. If the sampling rate is too low, the Nyquist-Shannon sampling theorem is not observed and thus the measurement signal is not acquired correctly. ...
This advantage also permits the use of fewer sub-samples to achieve approximately the same visual effect as OGSS. In addition, this paper examines the fill-rate, memory, and bandwidth usage of both anti-aliasing techniques. Super-sampling anti-aliasing is found to be a costly process that ...