Despite being analog in their representation of individual signal voltage samples, these devices are discrete in the time domain and thus are limited by the Nyquist–Shannon sampling theorem; both the input and output signals are generally low-pass filtered.
sampling theorems (optimal resolution with minimal number of measurements) in tomography
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Around 2004, Emmanuel Candès, Terence Tao, and David Donoho proved that given knowledge about a signal's sparsity, the signal may be reconstructed with fewer samples than the Nyquist-Shannon theorem requires.
Special care must be taken in the design of the scaling filter to ensure that spatial frequencies remain balanced in all areas of the image, and that the Nyquist criterion is met in all areas of the image.
Nyquist was featured on MTV Cribs and made a guest appearance as himself on the cartoon Kim Possible.
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Ryan Nyquist (born March 6, 1979 in Los Gatos, California) is a professional BMX rider who has won numerous gold medals in the X Games Dirt Jumping & Bike Park events.