The decomposition tag has no wiki summary.
2
votes
0answers
14 views
wavelet transform boundary
I am doing 1D wavelet decomposition and I am particularly interested in parts at the border of the signal. These parts are affected by boundary effects.
I know that some of the methods to extend the ...
0
votes
0answers
39 views
Can Cholesky outer product version result in negative square roots?
Say A is symmetric positive definite matrix , which means one necessary condition is diagonal entries of A are positive. If I do cholesky factorisation using outer product form, Can there be any ...
3
votes
1answer
151 views
I and Q Channels
My understanding of I and Q channels is as follows (please correct me if I am wrong):
I = In-phase, or real component
Q = ...
1
vote
1answer
222 views
Time-frequency analysis of non-sinusoidal periodic signals
Given the history of the sum of a time-varying mixture of periodic signals, say square waves, how would you efficiently estimate the number and frequencies of components active at a particular time? ...
3
votes
1answer
120 views
Empirical Mode Decomposition and Sparsity
In what sense does empirical mode decomposition (EMD) bring out the sparsity in a signal?
For instance, if I had a signal $f$ and I broke it down into $n$ intrinsic mode functions (IMF), what should ...
3
votes
1answer
209 views
Mathematics / Signal theory behind billiard ball 'wave pendulum' effect
This YouTube video shows a very interesting effect.
What is the underlying science?
I have recently started studying Fourier theory and DSP, and and trying to understand what is going on in terms of ...
