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Chapter 18

Sampling

نظرية أخذ العينات
نظرية أخذ العينات
Consider the continuous-time signal x(t), and a train of impulses where Ts,  is the sampling interval, and fs, is the sampling frequency. Multiplying ...
أخذ عينات من إشارة زمنية مستمرة
أخذ عينات من إشارة زمنية مستمرة
A continuous-time signal is sampled using impulse-train sampling followed by the zero-order hold method. Impulse-train sampling uses a periodic impulse ...
: إعادة بناء الإشارة باستخدام الاستيفاء
: إعادة بناء الإشارة باستخدام الاستيفاء
Consider a continuous signal and its sampled counterpart with a sampling period T. Applying a zero-order hold to the sampled signal results in a piecewise ...
التعرج
التعرج
Consider a time-domain signal and its Fourier transform to reveal the spectrum. Sampling the signal at a specific frequency creates multiple scaled ...
تقليل العينة
تقليل العينة
Consider a sampled sequence with zero values between sampling instants. Replace it by taking every N-th value of the sampled sequence. The original and ...
رفع العينات
رفع العينات
Consider a decimated signal with a reduced frequency range due to its lower sampling rate. Insert zeros between each sample to upsample, that introduces ...
أخذ العينات ذات النطاق الترددي المحدود
أخذ العينات ذات النطاق الترددي المحدود
Consider a signal sampled at a rate greater than twice its highest frequency. A signal with most of its energy concentrated in a narrow frequency band is ...
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