アンダーサンプリング
Sign in to savethumb|right|255px|Fig 1: The top 2 graphs depict Fourier transforms of 2 different functions that produce the same results when sampled at a particular rate. The baseband function is sampled faster than its Nyquist rate, and the bandpass function is undersampled, effectively converting it to baseband. The lower graphs indicate how identical spectral results are created by the aliases of the sampling process. thumb|right|255px|Plot of sample rates (y axis) versus the upper edge frequency (x axis) for a band of width 1; grays areas are combinations that are "allowed" in the sense that no two fre
Gallery (8)
Connections
sampling
Entity
hertz
Entity
signal processing
Entity
band-pass filter
Entity
International Standard Book Number
Entity
Fourier transform
Entity
Laplace transform
Entity
analog-to-digital converter
Entity
digital signal processing
Entity
FM broadcasting
Entity
moiré pattern
Entity
Nyquist–Shannon sampling theorem
Entity
quantization
Entity
digital image processing
Entity
Z-transform
Entity
discrete cosine transform
Entity
aliasing
Entity
sinc function
Entity
anti-aliasing
Entity
discrete Fourier transform
Entity