List questions from signal-processing

Published on 27 Mar 2026 - 21:18

35

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Sampling discrete functions

Published on 16 Feb 2017 - 9:14

1.3k

Views

Causality of unit step response

Published on 16 Feb 2017 - 20:10

1.8k

Views

How does the phase plot of Fourier transform of sine wave look like?

Published on 25 Mar 2026 - 22:04

127

Views

How to calculate the Fourier coefficients

Published on 20 Feb 2017 - 8:09

6.8k

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What is the inverse $z$-transform of $\frac{z}{z+1}$?

Published on 26 Mar 2026 - 12:53

55

Views

Finding an example of a function $f\in \mathcal{L}_2$, $\lim_{t \to \infty}f(t) \neq 0$.

Published on 24 Feb 2017 - 16:08

529

Views

Find a function that has a 1 or 2 norm but not an infinity norm.

Published on 26 Feb 2017 - 13:39

1.4k

Views

How to differentiate $f(t)\theta(t)$, the product of a function with the Heaviside unit step?

Published on 28 Feb 2017 - 17:24

25

Views

Convolutions mixing numbers of different algebras creating filter-banks in the simpler algebra.

Published on 04 Mar 2017 - 18:09

2.2k

Views

When to use $e^{-iwt}$ and $e^{iwt}$ for Fourier transform?

Published on 05 Mar 2017 - 15:26

345

Views

Drawing unit step function

Published on 06 Mar 2017 - 23:07

2.5k

Views

Determine whether signal is periodic

Published on 07 Mar 2017 - 13:00

85

Views

A doubt about a Laplace transform...

Published on 08 Mar 2017 - 16:16

401

Views

Problems with derivative of $\operatorname{sinc}$ when trying to interpolate in Matlab

Published on 25 Mar 2026 - 14:27

List Question

Are there exciting problems left in the mathematics of signal processing?

Sampling discrete functions

Causality of unit step response

How does the phase plot of Fourier transform of sine wave look like?

How to calculate the Fourier coefficients

What is the inverse $z$-transform of $\frac{z}{z+1}$?

Finding an example of a function $f\in \mathcal{L}_2$, $\lim_{t \to \infty}f(t) \neq 0$.

Find a function that has a 1 or 2 norm but not an infinity norm.

How to differentiate $f(t)\theta(t)$, the product of a function with the Heaviside unit step?

Convolutions mixing numbers of different algebras creating filter-banks in the simpler algebra.

When to use $e^{-iwt}$ and $e^{iwt}$ for Fourier transform?

Drawing unit step function

Determine whether signal is periodic

A doubt about a Laplace transform...

Problems with derivative of $\operatorname{sinc}$ when trying to interpolate in Matlab

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