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Results tagged with discrete-signals
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user 54457
A discrete signal or discrete-time signal is a time series consisting of a sequence of quantities.
5
votes
Under what conditions does DFT(f(x)) = f(DFT(x)) hold?
One (almost trivial) function is the ifft.
So fft(ifft(x))=ifft(fft(x)).
- 387
0
votes
When to Apply Circular Convolution Formulas?
The transformation defined in the book (Cosine and Sine) are based on symmetric or anti symmetric functions.
The implied information is that when we use them to apply convolution they will apply Circu …
- 387
1
vote
3
answers
285
views
How to estimate the local trend in a signal?
I need to remove trend from my time-series which looks like the following images.
However, I want to estimate the trend before removing it. Hence directly removing it won't do it.
The simple polynomia …
- 387