Questions tagged [decomposition]
The concept of signal decomposition relates to the need to separate one component from the others in a signal; this can be achieved through a filtering operation which require a filter design stage.
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questions
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3answers
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Slow Down Music Playing While Maintaining Frequency
Playing a piece of music audio at a slower speed would lower its pitch (frequency). Is there a tool and theory to slow down the song playing while keep the frequency the same? I suppose one can do ...
5
votes
1answer
9k 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 = ...
4
votes
1answer
370 views
Decomposition of a signal to slow and fast components
I am currently recording biological responses which are triggered by different events. The figure below shows the original signal (black) and the occurrence of input events (colored dots). There is ...
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votes
0answers
199 views
Intuitions on Kumaresan-Tufts algorithm for exponential fit
I am analyzing a transient signal presumably consisting of superposed exponentials. Such a case is indicated for the Prony analysis, but my data aren't noiseless enough, so I have turned to the ...
2
votes
1answer
503 views
Calculating an incoherence property from sub-optimal sampling patterns
EDIT (after comments and subject matter review)
CS is based on a choice of a sensing basis $\Phi$ relative to a representation basis $\Psi$. Using an "Incoherence Property" $\mu$ that measures the ...
2
votes
1answer
183 views
Extract approximation and detail coefficients
I am a student and would like to know how to extract the approximation and detail coefficients (A5, D5, D4, D3, D2 and D1) after an applied DWT decomposition dB5 (Daubechies 5, level = 5)?
