Full-Wave Rectified SINE Fourier analysis and spectrum PLEASE !!!!?
84563
I really do not understand what you want. The reference you gave seems to have the answer in it already.
464204
A frequency oscillator.
1116032
There is a possible package at the bottom of the link.  But, why not just use some of the Matlab functions written by others and do it yourself?  Should be straightforward.
676950
A few that come to mind at Euler, Maxima and Octave. Unfortunately, I don't think any of the free packages come close to Mathematica or Matlab, but maybe one of them will still meet your needs.
86731
The splitting and shift of a spectral line into several components in the presence of an electric field.
60102
Sierra Pacific Infrared\n\nhttp://www.x20.org/
693668
Fourier analysis is a mathematical technique that has application in a lot of fields.  It's often used for retrieving meaningful data from statistical "noise", for instance..  it also shows up in antenna and filter design, signal analysis, and many other areas.
207471
Go here for an automatic HJT analysis:\nhttp://hjt.networktechs.com/
371301
1. Solving AC circuits that have resistors, inductors, and capacitors in them.\n2. Signal processing\n3. Solving differential equations.\n\nA smart guy by the name of Euler showed that e^(i*x) = cos(x) + i*sin(x), thus allowing the conversion of a complex number in rectangular form (a + b*i) into polar form (r*e^(i*x)). It also allows us to write sinusoids in terms of complex exponentials, as in:\ncos(x) = (1/2)(e^(i*x)-e^(-i*x))\nIt turns out, perhaps unexpectedly, that complex exponentials are oftentimes easier to deal with then sinusoids. It also turns out, according to a guy by the name of Fourier, that most "well-behaved" functions can be written in terms of sinusoids (and thus can be written in terms of complex exponentials as well). This paved the way for a lot of neat applications. Google "complex exponential" (or any of the terms or names I dropped here) if you want more details.
800374
This newpaper article states what I have been saying for years (and my mother before me RE: transistor radios).\n\nhttp://www.hearinglossweb.com/discus/messages/11/807.html?SundayMarch1920060829am
173036
A Fourier Transform is a mathmatical way to convert a time domain signal to a frequency domain signal and vice versa. What does that mean?\n\nSuppose you want to detect a certain tone. An FT (Fourier Transform) could take the input from a microphone. Imagine that the input is a sine wave at one frequency (say 1kHz). Then the output will be a "spike" at 1kHz since the x axis of the FT is frequency. Feed the spike to the inverse transform and you'd get the sine wave back out.\n\nSo frequency detection is one application. If you put a square wave in, you'd find that the square wave has a spike at the fundamental frequency and spikes at the odd harmonics. If you don't belive that, try sketching some sine waves at f, 3*f, 5*f, 7*f, and add them together (easy with Excel or Matlab) and watch how quick it "squares" up.\n\nAnother application is filtering. Manipulating data in the frequency domain allows you to build very sharp filters... then passing it through the inverse transform produces the signal after filtering.\n\nThere are other applications such as correlation, tomography, etc.\n\nIn the real world, you probably use a Discrete FT (DFT) and probably an FFT (Fast FT) which is a specific computer algorithm for a DFT. DFT means that the input is sampled as it would be for a computer. Computers don't read sine waves, they read little points on sine waves every X microseconds. The frequency they read the signal must be at least twice the frequency of interest, or you won't get proper results.
49580
NO WAY Why?\n\nF(t) = A Sin(wt)\n\nA called the magnitude : how high the sine function reach\nif A =1 the sine is between 1 and -1\nif A =5 the sine is between 5 and -5\n\nW = 2*pi*f where f is the frequency : how many period during 1 sec\nif w=1 f=1/(2pi) this means at t=2pi we will have one period\nsin(2pi)=sin(0), one period for each 2pi\nif w=2 >>> one period ecah pi\n\n\nSO when the function is expressed by the sum of many sines, many differents frequancies, impossible to regroup them in one frequency\n\nTHe basic frequency called fimdemental and the other frequencies called harmonics (mulpitles of fundemental)\n\nFourrier Series gives the magnitude of all harmonice of unregular from, BUT IT IS NOT POSSIBLE TO JOINT MORE THAN ONE FREQUENCY IN ONE TERM\n\nlike 3x^2+4x^5 since the powers are differents we can't sum or add them in one term
505284
Sure, I have a scanner and the website I use to find frequencys is http://www.radioreference.com/modules.php?name=RR&stid=17 . \n\nHope that Helps :)
209312
Go to the website in sources and download the sample Matlab programs\n\nWhen you unzip the file, the examples will be divided into chapters based on the book Digital Signal Processing using Matlab V, by Vinay K. Ingle and  John G. Proakis.   Here are the titles to the chapters:\n\n    *  Chapter 2:  Discrete-Time Signals and Systems\n    *  Chapter 3:  The Discrete-Time Fourier Series\n    *  Chapter 4:  The z-Transform\n    *  Chapter 5:  The Discrete Fourier Transform\n    *  Chapter 6:  Digital Filter Structures\n    *  Chapter 7:  FIR Filter Design\n    *  Chapter 8:  IIR Filter Design
443258
http://en.wikipedia.org/wiki/Sine_wave
450183
this might prove to be useful:\nhttp://islab.oregonstate.edu/koc/ece575/02Project/Mor/
1148068
IFT means Inverse Fourier Transform\nDFT means Discrete Fourier Transform