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Questions tagged [signal-processing]
2068 questions
-1
votes
1 answer
Unit step response of a FIR filter
Given a FIR filter with impulse response:
$$
h(n) = \begin{cases}1, &0 \leq n < 5\\
-1, &10 \leq n < 15 \\
0, &\text{otherwise}\end{cases}
$$
What would be the right approach to calculate the filter discrete unit step response?
Thanks
Jafar Eldeni
- 53
-1
votes
1 answer
Apply low-pass filter to a signal
I am trying to understand how I can apply a low-pass filter to a signal.
Let's say that I have the following:
$f(t) = 500\sin(500t)\cos(2kπt)$
I want to apply an ideal low-pass filter having a cutoff frequency of $500$Hz.
What steps should I follow…
zorro
- 13
-1
votes
1 answer
what is the periodicity of unit impulse $\delta[n-2m-1]$?
I want to find the periodicity of the following function:
$\delta[n-2m-1]$
I have calculated the periodicity of the above functions which is $2$ ,as $m=0,1,2.... \delta[n-1],\delta[n-3],\delta[n-5]$.
phantom
- 101
-1
votes
3 answers
Sampling a function at a single point using unit impulse
I was watching this video on signal processing:
, and the author was trying to derive a function such that
$$
y(t) = \begin{cases}
x(\tau) & \mbox{if } t = \tau, \\
0 & \mbox{otherwise}
\end{cases}
$$
The answer is $\int_{-\infty}^{\tau+} x(\tau)…
qed
- 1,083
-1
votes
1 answer
Fourier Transform of u(-2-t)
I'm trying to find the Fourier Transform of
x(t) = u(-2-t)
Here's what I've tried:
Can anyone tell me what I'm doing wrong?
Thanks in advance.
EDIT: Forgot to mention that u(t) is the unit step function.
