What is Processing: Definition and 235 Discussions

A process is a series or set of activities that interact to produce a result; it may occur once-only or be recurrent or periodic.
Things called a process include:

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1. Which Circuit is Best for Sampling Voltage and Current in the 250V, 30A Range?

Hello, Please help me to create the sampling processing circuit. i have to create the voltage and current sampling processing circuit, Then the output of circuit will be fed to processor to further operation. output voltage of my original circuit will be maximum 250v and current is 30A(peak...
2. Review of Drosophila Visual Processing

Here is an open access review of visual processing in the fruitfly nervous system. It will give you an overview of what is known about how the nervous system extracts relevant information from its visual inputs. Fruit flies (Drosophila) are a very tractable research organism in which...
3. Studying Critique My Self-Study Schedule (Signal Processing & RF Electronics)

Hello everybody. I have already graduated I am currently in training at work which I am required to finish intensive courses. So I will start when it's completed. My interests are in Signal Processing & RF Electronics which you could tell by the study plan I created. I will be taking a slow...
4. I Making Sense of Notation Confusion in Statistical Digital Signal Processing

I started my research in statistical digital signal processing two years ago, so I need to familiarize myself with all the notations people use in probability and statistics. I come from a deterministic science background. I name my variables based on what they mean. A velocity is a v , a...
5. How do our brains process information differently depending on the task at hand?

Wasn't sure where to drop this thread, so here it is! I've searched the internet and this forum, perhaps I don't have the correct keywords, but I haven't been able to find anything that discusses this topic. I'm interested to know about your individual experience of learning. I'd like to think...
6. Transition Rate Matrix for 5 Processing Units

Summary: The transition rate matrix for a problem where there are 5 Processing Units A computer has five processing units (PU’s). The lifetimes of the PU’s are independent and have the Exp(µ) law. When a PU fails, the computer tries to reconfigure itself to work with the remaining PU’s. This...
7. Image processing with Sobel Edge detection

I am coding Sobel Edges detection in C#. I have a method that converts my image to grayscale. it adds the R G and B values and divides by 3. and replaces the R G and B value out with that same number. That seems to be working fine. Then I added a gaussian blur to it by using this...
8. Signal Processing: Finding the auto-correlation

Hi, I am working on the following problem from a textbook, but am getting stuck and am not sure how to proceed. Question: For the system below: v(t) = -cv(t - 1) + e(t) where ## e(t) ## is a zero mean white noise sequence with variance ##\sigma_e ^2## , determine the first two terms in the...
9. Chemistry Processing a "Raw Spectrum" - A Beginner's Attempt

The first picture shows the "raw spectrum" before processing it and the second one is my attempt to process it. I was not sure about the solvent peak because it is expected to be a singulett at 7,26 ppm but I could not really identify a clear singulett so I dichtet to go with the peak that stood...
10. How to make an audio processing device for noise reduction ?

Hello everyone !I am working on noise reduction and I wanted to do some experiments with an arduino. I took an arduino which get music (as an example) in input by jack. It also has a microphone and in a first try the goal is to get as an output the music - the noise around... To act like a kind...
11. Engineering Image Processing: what is the correct form of the Laplacian Filter

Hi, I just have a quick question regarding image processing. What is the correct form of the Laplacian for image processing? I have seen different versions online and don't understand which one is meant to be the conventional one. I know that: \nabla^2 f(x, y) = \frac{\partial^2 f}{\partial...
12. Signal Processing: DFT spectrum of sinusoid signals

Hi, I was recently reading about the discrete Fourier transform and its application to a basic sinusoidal signal. If we know that it has an integer number of cycles in ## N ## samples (and thus no leakage), why would there be two peaks in the spectrum: one at ## m ## and another at ## N - m##...
13. Gaussian kernel in image processing

I was reading the following webpage on Gaussian kernel but couldn't understand few details: https://www.imageeprocessing.com/2014/04/gaussian-filter-without-using-matlab.html . Would really appreciate it if you could guide me. Thanks in advance! Here you can find the high-res screenshot of the...
14. Advice for my first course in Discrete Signal Processing?

Summary:: I'm about to take my first course in DSP. It is a one term graduate course using the 4th edition of Proakis. I'm about to take my first course in DSP. It is a one term graduate EE course using the 4th edition of Proakis. Does anyone with experience in this have useful advice for such...
15. Engineering Do Identical Histograms Remain the Same After Applying a Smoothing Mask?

Hi, I was just looking at some conceptual problems on the internet and wanted to check whether my thought process on this question was correct. Question: The two texture images shown below are quite different, but their histograms are identical. Both images have size 80 × 80, with black (0)...
16. Engineering Image Processing: Convolution vs Filtering

Hi, So my question is perhaps better asked as: - What is the point of convolution (in 2D image processing)? - Why would we use that operation in image processing? - What is so special about that flipped version of the kernel? Context: In an image processing class, I was learning about the...
17. Engineering Signal Conditioning and Processing

I'm thinking that I am going to need something like a low pass filter around 100 Hz so that low noise disturbances from a nearby PSU and such won't disturb my sampling. However, the unit will have to operate around 50 Hz sometimes. Is it possible to use a Fast Fourier Transform to filter out...
18. Signal classification and processing for a gesture sensor module

I got a gesture sensor module that produces a signal per event. The each signal is a set of regularly sampled readings from four photodiodes. The number of samples per event can be very different, from around 20 up to over 100, and each sample value is essentially the measured brightness...
19. MATLAB How can I create an equation in matlab for image processing?

Here is the documentation for the 2DFFT: https://www.mathworks.com/help/matlab/ref/fft2.html how would I go about creating this formula on MATLAB to apply it on an image? My guess is that I need to create the equation and then multiply it to the image I need such as: $$U = VI$$ where V is my...
20. I Spatial interpolation before or after data processing

Let a set of values at several discrete points in 2D or 3D space be given. These values will be processed by an algorithm. At the end, processed values need not be known at the original locations but at grid points. Therefore, spatial interpolation needs to be applied. Is there a general...
21. MHB Natural Language Processing Help

Hey, I need some help with the following exercise, it's probably not as hard as I think but I can't really think clear right now. I would really appreciate your folks help, thanks in advance :) I wasn't sure wether to post this in the computer science or statistics category so I posted it in...
22. M

A Signal Processing and the Duffing ODE

Hi PF! Attached are two plots: signal.pdf is a solution from the Duffing ODE, and plots vertical displacement over time, both the raw signal (blue) and the reconstructed signal from an FFT (red). I've also shown a zoomed in view so you can see how oscillatory the signal is. pow.pdf plots the...
23. Data Processing before Computers

Part of the discussion on flow charts drifted towards the use of that corner cut on the old IBM cards - enough so, that I have created this new thread. @sysprog provided this information: The conversation diverged at about this post: I noted that the card readers - including such machines...
24. Gibbs phenomenon caused by digital signal processing?

Hi, I'm an electrical engineer for a few years now, but it's been a while since I had to deal with this kind of stuff, I turned out to become mostly a programmer in the end, but i was thinking: is Gibbs phenomenon, which was demonstrated to me during my studies while working on Fourier series...
25. Stargazing Astro Image Stacking (optimize DSS image stacking and post processing)

I created this thread because every online resource I have examined to date has been largely worthless- either totally over-engineered complexity or superficial garbage (can you tell I am irritated?). The problem is simple: optimize DSS image stacking and post processing based on quantitative...
26. Sound wave intensity (dB) and sound processing

Hello Forum, A sound wave intensity (pure frequency) is proportional to the square of the wave pressure amplitude, i.e. ##I \approx p_0^2##, where ##p_0## is the pressure wave amplitude: ##p_0 sin(\omega t \pm kx)##. This means that the (gauge) pressure value goes larger (positive) and lower...
27. Need help with DBMS query processing? Check out Q1 and Q2 for assistance!

This is written in my book. Can you please reply to these queries in Q1 & Q2. I'm stuck on those
28. Searching for Answers on Processor Performance & Real-Time Processing

I have a question for which I can't seem to find a satisfactory answer. We do a lot of intense real time processing of audio signals in my line of work. (Generally programmed in C) I am a mechanical engineer with only a rudimentary understanding of the process that goes on in the software for...
29. Interest of IQ (QAM) processing at receiver level

Hello. My question is about a specific case. Assume emitted signal ihas not been created using IQ modulation, what is the interest to rebuild an IQ signal in receiver before port-processing ?
30. Engineering Course Choice: Robotics, ML, Adaptive Signal Processing

I wasn't sure if I should post this here or academic guidance but given the career factor in this question I will post it here: I am doing a masters in electrical engineering with a focus on signal processing but I am also interested in others areas such as machine learning and robotics. I need...
31. Magnetic encoder signal processing

I've been using DC motors with magnetic hall effect encoders on them to measure position control. It's basically a feedback servomotor system. i've so far been feeding the signal into my microcontroller's interrupts. This has been causing some problems with my timers and program. Let's say the...
32. Engineering Signal Processing jobs with a Biomedical Engineering degree

I'm starting a new job search where I'm interested in getting an entry level engineering position so I'm trying to figure out the industries where I would realistically be able to obtain a job as an engineer. I obtained my A.S in Engineering Science, my B.S in Physics, and my M.S in Biomedical...
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Studying Help me understand physics with sensory processing issues

Hi all, I have dreamed of doing research in biophysics to develop organic nanomachines which can treat people's medical problems by rebuilding them from the bottom up. The root of this comes from my own life experience. I grew up with unidentified learning issues as well as emotional and social...
34. Image Processing -- Haar Transfrom

I'm looking at this link: HaarWaveletTransform. Given an array of N sample points, it subdivides the array into two arrays of size N/2: Array1: Averages adjacent sample points. Array2: Computes a finite difference between sample points. You can then apply recursively k many times. In the end...
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MATLAB In MatLab How can we stop/start process during processing?

I have tried to write MATLAB code for creating animation by using linear transformation, so I want to stop process during processing and then start process during processing. such I have stopped process for 5 seconds after that I start process.I don't know a command that should be used in my...
36. Complex Exponentials Signal processing

Hello everyone. Iam about to read a course in DSP and I can't get my head why complex exponentials are used as input signals that often? Is it just to simplify the math? If not, what exactly is the imaginary part of a complex exponential? Does it "do" anything special compared to a real valued...
37. Do all humans have the same visual processing speed or not?

Do all humans have the same visual processing speed or does it differ from person to person? By ‘visual processing speed’, I mean the speed at which one takes to process visual information. For example, if a light has a frequency of 50 hertz where it switches on / off 50 times a second, do all...
38. S

Baseband Signal Processing and Digital to Analog Converters

Hi Guys, I have a question on the need for Digital to analog converters in Transmitters. To elaborate bit further: 1) Because of the advantages of the Digital signals, most go the signal processing in wireless communications is performed in baseband. But my question is: Since digital...
39. Solve Impulse Response Homework - h(n), x(n), y(k)

Homework Statement I have an impulse response h(n)=e^(0.1n)*[u(n)-u(n-8)] and an input x(n)={0,1,2,3,0}, how do I find the output y(k)? [/B]Homework EquationsThe Attempt at a Solution i don't even know how to solve. should i try convolution or should i substitute the values of x(n) in h(n)...
40. Insights The Joy of Processing - Comments

jedishrfu submitted a new PF Insights post The Joy of Processing Continue reading the Original PF Insights Post.
41. Digital signal processing and the z-transform

Hi I am currently learning Digital Signal Processing from Applied Digital Signal Processing by Manolakis and Ingle. However, my background is in mathematics, so I like being shown why an assertion is true. So, in the chapter about the z-transform is where I start seeing this becoming an issue...
42. How to increase processing speed / power of a computer?

How to increase external information processing speed / power of a Computer / CPU? When I say external information, I mean external stimuli. When I say processing speed, I mean the speed at which the CPU / Computer processes external stimuli. So for example, one Computer might take 10 seconds...
43. Studying Supplementary book for intro signal processing class

The required textbook for my intro signal processing class is "Signal Processing First" by James McClellan. So far I like the book quite a lot because the author does a good job to explain the concepts clearly. However I feel like the book doesn't provide enough practice problems. I just want to...
44. Thermodynamic cost of information processing (or lack thereof)

Say you wanted to heat up your room. You could choose between an electric heater that outputs 500W or a PC that draws 500W. In both cases, the amount your room would heat up by would be the same, but the second case is much more advantageous because the computer can process information before...
45. Need help with accelerometer data processing

Hi, am working on a vehicle tracking device, i am using LIS3Dh accelerometer to get the acceleration data. i am using TM4c1231e6pz controller. I need to implement a harsh breaking alert, I am having difficulty in finding out which direction the vehicle is moving since the axis are not aligned...
46. Embedded Adaptive Control/Signal Processing Industry Careers

Hello, I just began a PhD in Computer Engineering three weeks ago. I have an undergraduate degree in EE from a lesser quality university than I am now attending. My background in EE focused on DSP/Image Processing, but it was all deterministic stuff (so no real-world stochastic stuff besides...
47. What I need for image processing programming?

I am new to image processing and going serious from now on (as part of my research). I am a Mac user. What program is the best for image processing? What the difference between Xcode and Microsoft Window Visual, which one is better and does OpenCV can works with both of them? What kind of...
48. Just how broad is a focus in signal processing?

I see a lot of electrical engineering graduate programs that offer concentrations in signal processing (analog or digital or both). I understand signal processing is used virtually everywhere, but how does one break into a particular industry with a concentration in signal processing? Can you...
49. Calculating Volume Flow Rate of Olive Oil at a Processing Plant

Homework Statement At a processing plant, olive oil of density 875 kg/m3 flows in a horizontal section of hose that constricts from a diameter of 2.92 cm to a diameter of 1.20 cm. Assume steady, ideal flow. What is the volume flow rate if the change in pressure between the two sections of hose...
50. MATLAB Image Processing and MatLab (Deconvolution Process)

I have these two images: And I have this impulse response function, or the point-spread function (PSF): The first image is the actual size of the PSF, and the second image has zero pads included. I tried deconvolving the images this way (with MatLab): deconvolved_image =...