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Questions tagged [zoh]

the zero-order hold (ZOH) is a linear time-invariant (LTI) model of the piecewise constant output of a digital-to-analog converter (DAC).

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26 views

Not sure how to perform ZOH upsampling

Sorry if the question looks pretty naive. My goal is to up-sample a given signal x[n] by a factor of M using the zero order hold interpolation function. The basic idea of up-sampling is to add M-1 ...
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2answers
62 views

Ideal sampling using sinc funcion

Let $ x(t) $ be a bandwidth limited signal such as $ \forall |\omega|>\frac{\pi}{T} : X^F(\omega)=0 $ while $ X^F(\omega)$ is the signal's Fourier Transform. Let us denote $y[n]=\int_{-\infty}^{\...
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1answer
3k views

Construction signal using zero-order-hold

I have a signal $x(t) = \sin(2\pi t)$ with $t \in [0,1]$. The signal $x_s(t)$ is the sampled signal with a sampling period of $T_s = 0.05$. Now I want to compute the reconstructed $x_r(t)$ signal ...
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1answer
207 views

ZOH with polyphase resampler

I'm trying to design a FIR filter(direct form) the coefficient of which will be used to design a polyphase resampler that does Zero-Order Hold resampling. If the direct form impulse response is ...
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2answers
351 views

Zero-order interpolation problem

Let $x_c(t)=\cos(\omega_0t)$. This signal is sampled with $\omega_s$, which is greater than the Nyquist rate. It is then interpolated with a zero-order interpolator. The signal obtained is $y_c(t)$. ...
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241 views

Does the hold part in sample and hold turns the signal from discrete to continuous?

I am trying to link sample and hold to discrete and continuous time domain. Could someone please confirm: When sampling but not holding for "an extended" period of time, you have discrete samples. ...