Linked Questions

3
votes
3answers
105 views

Can I unfold the triangular wave? [duplicate]

I have triangle wave function such as ...
0
votes
0answers
315 views

Phase Unwrap List Of Points: Implementing continuous phase/Arg function for List of Points [duplicate]

I am looking for a function to unwrap phase of a list of points as done here for the continuous case. I have the Re/Im data as my input and would like the unwrapped phase as the output. Does anyone ...
11
votes
7answers
2k views

How do I get rid of a “jump” in my plot?

How can I prevent plotting functions from "connecting" inside a plot points that should "wrap around" outside the plot? For example, how do I eliminate the horizontal lines running across the ...
16
votes
2answers
452 views

Fitting Stradivari's scroll

How can I find the simplest curve that gives me a scroll like this? This is where I am at the moment and doing it by hand is becoming more and more cumbersome. First, take a drawing of the scroll ...
19
votes
1answer
4k views

How to demodulate an FM signal in continuous-time?

I'm not sure if this is a math or Mathematica question, but I'm posting it here because I'm interested in possible Mathematica tools/functions to solve the problem. I'm stuck. I want to simulate ...
7
votes
3answers
578 views

Getting Arg[z] to go from $0$ to $2\pi$

I'm defining branch cut functions, and I'm using $\arg(z)$ as a building block. So I just spent an hour at the whiteboard assuming that $\arg(z)$ goes from $0$ to $2\pi$, and then I implement the code,...
3
votes
2answers
609 views

Fourier Analysis: How to get rid of a discontinuity

When I compute the phase error of a spatial series data using Fourier analysis in Mathematica there's a discontinuity @ parameter ...
5
votes
1answer
748 views

Fixing phase unwrapping jumps

The problem of unwrapping 1D phase often comes up in Fourier analysis: someone computes a DFT of some data, the resulting phase values fall between $-\pi$ and $\pi$, and they'd like to "unwrap" these ...
5
votes
1answer
223 views

Finding smooth root sets to a transcendental equation

I'm trying to solve for the roots of an equation like $f(a, n) = \frac{n^2}{n+1} e^{i a n }$ for some list of complex $f$ values. For each $f$ value I know the (real) value of $a$, and I'd like ...
3
votes
2answers
215 views

Group delay of a transfer function

I'm trying to find a straightforward way to find the group delay of a transfer function. I've created a transfer function, and through the BodePlot function, I'm able to plot its phase characteristic....