What is Processing: Definition and 235 Discussions

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Hello all. I am working on a problem for class that is taking some time data and changing it to frequency data. I am using excel and the fast Fourier transform(fft). I am having a problem graphing the results. I am very new to signal processing. I am only given the data which is 1024...

Hi everybody. I'm relatively new to C++ and am having an issue. What I need to do is take in several files and then do some data processing in each of them separately. I've tried to do this several ways and nothing has worked so far. Below is my last attempt. Basically, each file is...

Hello All, I am currently taking Signal Processing & Linear Systems. I've come across my last problem for homework but can't find a way to do it. If someone can show me in the right direction it will be very helpful. Thanks The Problem: The voltage f(t) = 2u(t) is applied to the circuit...

I hope this isn't too far off the approved topics for this list: I'm seeking information about math processing software- something that allows math problems to be done on the computer. Something powerful to be used through and beyond college engineering courses. Sort of like Microsoft WORD, but...

I have three courses that I can choose from: Electromagnetics or Digital Signal Processing II or Semiconductor Physics and Theory for my spring? Which do you suggest?

I have seen speculation that if the universe is like a computer and/or runs like cellular automata, then the speed of light can be seen as the processing speed of the universe. You can't go faster because the universe can't calculate what will happen any faster than that. I think it may have...

Hi, I am pretty new to Matlab and am trying to reduce the noise of a particular signal. I found this pdf online and found it to be helpful. However, I am having trouble figuring out what the freq=(0:79)/(2*n*dt) means. More specifically the 0:79 bit. Any help would be much appreciated...

Is it possible to perform some form of data correction by finding the variance/std dev and covariance? I have a bunch data all related to a specific observation. For test purposes, i have 1000 samples of each data for certain condition. I can find the covariance between each data under this...

I am currently working on a project to build a barcode scanner. I have built the apparatus to detect a signal and am able to view this signal on an oscilloscope, however I am wondering if it is possible to build a circuit to output this signal as a binary code on a series of LED's (or something...

>Hii everybody Am having some problems and facing some dificulties concerning, the topic of operational amplifiers. More precisly: - feeding back with the inverting and non inverting terminlas, to get a ten times amplification for my input signal(DC coupled). - feed back to get an...

Homework Statement Is the system y[n] = x[n] - x[n-1] time invariant? Homework Equations The Attempt at a Solution I say no, but there's one thing I don't understand. I think if you shifted the input, and then ran those samples through the system, you'd get x[n-n0] - x[n-1]...

I know this may seem like a simple question to some of you experts out there, but I was thinking today about how much computers have advanced and how they allow us to make substantial progress in design and simulations and stuff. Actually, what got me thinking about it was in my propulsion book...

Determine if the CT systems are 1) casual or uncasual 2) memory or memoryless. Definitions: Casual: If for any time t1, the output response y(t1) at time t1 resulting from input x(t) does not depend on the values of the input x(t) for t > t1. Memory: If the output at time t1 depends in...

I need help, pls ! Hello, Could you pls help me answer this question: - Please take a look at my small Assembly program that reads a tring from keyboard, then displays all the characters that are not uper-case letters in reverse order: .model small .stack 100 .data tb1 db 'Pls enter a...

OK, so this isn't anything I've ever done before and would like some input on feasibility, and whatever else you can throw at me. I'm examining images (of atmosphere with a storm structure building up) but unfortunately the data that is available (i.e. the data I've got to use) has quite...

Hi,I am a graduate student, want to transfer from physics to electrical engineering to study communication and digital signal processing , till now I don't know so much about that. Next semester, I will be a Teaching Assistant in Electrical engineering for the first year.each semester I must...

I have a huge set of data. About 5000 excel sheets and in each one about a 500x7 matrix. I'll be doing a lot of manipulation where I'll need a programming environment that is faster than excel (excel is pretty slow). Anyone have experience with both R and Matlab and can comment on which one is...

Hey guys, I am using the sptool GUI to design and apply filters to noisy ECG signals. I understand the concepts behind lowpass, highpass, and bandpass filters. But I'm confused with the parameters of FDA tool. Here are my questions: 1) In the FDA tool, there is a bandstop filter. what is...

Would a analogue processor offer significant speed ups on binary processors, on the scales of decimal bits and then if we had a bit with 100 states. I know that for the transfer of information would receive significant improvements but would this also be true for processing information?

[Note: P and p throughout are probabilities] Fact: The hypergeometric distribution is the precise probability of crawing from a dichotomous (S-F) population without replacement. A family of probabilistic sieves can be constructed using this fact as follows. Step 1: Suppose we know all...

hello everyone, what stuff can i tackle on my own to learn dsp? complex variables and Fourier transforms to begin with - but what else? how do other aspects of EE play into dsp? how do i get functionality fastest!?

How many cubic centimeters of ore 0.25% by mass silver must be processed to obtain 2.0 pounds of silver? The density of the ore is 7.0 g/cm cubed. cm cubed; 1.00 pound=454 g. Assume that the process is 100% efficient. I get the answer of 520 but the answer is 52000 and i don't understand why...

Hello, this is something I am not sure about, so want to make sure before burning my friends electronics :biggrin: . we are trying to use 68hc12 for processing a sensor input, but the signal from the sensor comes out to be more than 5 volts (around 15 or 20 v), so what we need is to scale the...

I am interested in DSP, for the coming semester, I can only take one signal processing class, and I have two choices that I am not exactly sure what they really are: 1) Statistical Signal Processing: Detection theory and hypothesis testing. Introduction to estimation theory. Properties of...

******************************************************************************** CALL FOR PAPERS 13th International Conference on Neural Information Processing (ICONIP2006) Hong Kong Convention and Exhibition Centre, Hong Kong...

Hi I've just got a small problem that needs to be cleared here to allow me to do the other questions. Statement: Two objects were detected in a 100-sec exposure with 3x4 CCD camera Now you are given 3 by 4 matrices for the raw image data, bias, dark count and flat field. I've provided a link...

anyone know of any forums discussing abt above issues?

I want to write a program in Java that reads RGB information pixel-by-pixel from an image file, processes that information, and then writes it to a text file. I know how to do everything except read from the image file. I'm thinking a Bitmap file might be the best choice for the image file...

I have been reading about the new cell processing that would be used for the PS3. I was wondering when it would be available for regular computers and what price range you think it would be in. I was hoping to build a very nice computer before I go off to college next year, but I am kind of...

Hi. I have a data gaussian g(t) and data that I suspect is a convolution (g*f). I want to find f(t), so I need to deconvolute (using Origin preferably). If I convolute g*g, I get something very beautiful. If I convolute (g*f)*(g*f), I get something very beautiful. If I deconvolute...

My academic background is in math and linguistics, but lately I've gotten interested in speech processing. What I'm wondering is whether I need to go back and get a BSEE (and possibly an MSEE or PhD in EE) or if I can realistically hope to get into the field by just taking a few courses in...

I need help in extracting the fundamental frequency from a recorded wav file. The input is an A-chord from the guitar sampled at 44100 Hz using mono. my source code is as follows. The variable framed is components of the signal required to be processed. So if the waveform of chord A starts...

Hi, I was just wondering if anyone has any experience with signal processing. I am working with musical instrument recognition and would like some help. What is the main difference between musical instrument signals? Where can I get some resources on signal processing(I am using Matlab, but...

It's common knowlegde that any traditional logic function can be realized using quantum logic gates (gates that are reversible). I've been looking for a good book on the subject of Quantum Information Processing but I haven't found one that I am willing to shell out the money for at this point...