Questions tagged [signal-processing]
The subfield of electrical engineering that focusses on analysing, modifying, and synthesizing signals such as sound, images, and scientific measurements.
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Data transmission via laser illuminating the ceiling
I've heard a data transmission technique proposed more than once wherein a base station would fire a laser at the ceiling of an indoor space. The pulsing of this laser would be observed by one or more ...
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Evaluate action of $f(\frac{d}{dx})$ using the Fourier/Laplace transform
Initially I asked this question on mathoverflow. I however thought physicists may face this sort of problem more than mathematicians (I am an engineer). Due to that, I decided to ask here as well.
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Understanding Upper Side Band (USB) and Lower Side Band (LSB) of Modulated signal
I want to know that what is UPPER SIDE BAND and LOWER SIDE BAND in this picture?
I have a confusion that the portion above the x axis is the USB and the portion below the x axis is LSB. I have doubt ...
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Wavelength and frequency associated with a wave pulse
What are the definitions of wave length and frequency of a wave pulse?
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Sensor Array Position Calibration in Anisotropic Media
Problem.
I have a sensor array consisting of $n \gg 4$ receivers at unknown locations $\langle x_n, y_n, z_n\rangle$ embedded in an anisotropic medium whose index of refraction varies as a known ...
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Maximum bitrate density of a shared medium
I'm not a physicist, so my apologies if this isn't worded correctly, or if it even is a valid question.
I was recently learning how WiFi works and how the slowest devices on a channel can slow down ...
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What would happen when two wave functions intersect in a Fourier series representation of periodic signals? [closed]
I saw a piece of code on github which transforms the planetary movement into the fourier wave function.
These circles are given by the x and y ordinates: x=cos(ωt) y=sin(ωt), which are periodic. ...
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How do I convert the Amplitude from Power/Amplitude spectral density?
I've started working on PSD for seismic signals. In theory, PSD signal can be expressed in 2 ways. One in $(PSD=g^2/Hz)$ and other in $PSD=((meter/second^2)^2/Hz)$ and also ASD=(√PSD). Here $g$ is the ...
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Can we quantify the pitch of a sound that is a mixture of many frequencies?
How is the pitch of a sound defined quantitatively when it is a mixture of many frequencies? For example, the sound emitted by a plucked guitar string, or say, the pitch of somebody's (normal) voice. ...
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Is this a good use of the convolution?
I would like to replicate the real response of an instrument to some signal. Here's what I have in mind: I generate some ideal signal. I then add Gaussian noise to it to produce a realistic signal s(t)...
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An idea to retrive phase of different frequency from noisy experimental data
There is a lot of idea in this website to retrive phase of certain frequency from a noisy oscillation. For example this one: use band pass filter to filter out certain frequency and then use hilbert ...
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Pulse Area Uncertainty for a given Sample Rate and Bit Resolution
I'm recording pulses and want to approximately know how precise I can measure this with my Oscilloscope. I'm recording with 15 bit vertical resolution -> 1/(2^15) and a sample rate of 125 MS/s ->...
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Why the General Lomb-Scargle results are doubled?
I got a problem when computing the GLS on MATLAB for my master deegree thesis.
I need to do a comparison between the PSD and amplitude spectrum of a signal computed with three different metods, the ...
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What is the difference between radar cross section and intensity/amplitude?
I've been tasked with simulating a radar system, and I think I understand the problem, except I'm supposed to be providing the outputs in both radar cross section and amplitude.
What's the difference? ...
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Applications of Signal and System theory [closed]
I recently heard a lecture about Signals and Systems and find the subject extremely exciting. I would like to do more in this direction, so I would be interested to know in which modern research area ...
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