# Questions tagged [signal-processing]

Questions on the mathematical aspects of signal processing. Please consider first if your question might be more suitable for http://dsp.stackexchange.com/

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### Is the Hadamard Product of two laplacian operators allowed to get some kind of biharmonic operator?

I'm currently working on my masters thesis in computer science and from this point I'm not that into this subject. Right know I try to understand the steps the authors of this paper did to get the ...
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### (Infinite) sum of products of 'offset' Bessel functions (an application to calculating the RMS power of a harmonic "FM" oscillator)

TLDR version: I'm trying to calculate $\sum_{n=1}^{\infty} J_{n-1}(a) J_{-n-1}(a)$ but can't seem to get it right. For motivation & attempt, read the rest. Consider the harmonic "FM" ...
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### Why is the autocorrelation of an uncorrelated random noise process the dirac delta distribution?

I am reading Stochastic Methods by Gardiner and in the beginning of chapter 4 he motivates the rigorous interpretation of a Stochastic Differential equation by describing the properties of a "...
1 vote
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### Average power of an inharmonic "PM" (Phase Modulated) signal

Based on some experiments, I conjecture that the average power of an inharmonic "PM" (in the sense that's used in music, i.e. Phase Modulated) signal tends to be the same as that of the ...
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### Convolution with a time shifted box function

I have the input: Delayed box input Its a box funciton x2(t-0.00225) with L = 0.0005 where it's 1 when 0.002 <= t<= 0.0025 and 0 elsewhere. I want to convolve this with the impulse funciton of a ...
1 vote
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### Estimate the Power Spectral Dentity of a signal from CWT coefficients

I want to estimate the PSD of a signal from the CWT coefficients. How can I do it? Can you provide me with some algorithms to do this? I have Matlab R$2016$a installed. Thank you so much! I do this ...
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