File:Simple time domain vs frequency domain.svg
Original file (SVG file, nominally 512 × 398 pixels, file size: 30 KB)
Captions
Summary
[edit]DescriptionSimple time domain vs frequency domain.svg |
English: Top:Example of a simple signal, comprised of two sine function.
Bottom: The fourier-transformation if the same signal. Deutsch: Oben: Ein einfaches Beispielsignal, bestehend aus zwei zusammenaddierten Sinusfunktionen.
Unten: Die Fouriertransformierte desselben Signals (vereinfachte Darstellung als kontinuierliche Linie). Die Fouriertransformierte, wird häufig "im Frequenzraum" oder "das Frequenz-Spektrum" genannt. Für mathematische Zwecke ist es wichtig, die *digital* berechnete Fouriertransformation als solche zu kennzeichnen. Daher spricht man hier häufig bewusst auch von einer DFT oder eben FFT. |
Date | |
Source | Own work |
Author | Accountalive |
SVG development InfoField | |
Source code InfoField | R codef <- function(x)
{
noise <- rnorm(1,0,0.05)
a <- sin(10*x)
b <-2*sin( x)
a+b
}
xr <- 20
res <- 10240
x <- seq(0,xr*2*pi,length.out=res)
y <- rep(0, length(x))
for( i in 0:length(x))
{
y[i] <- f(x[i])
}
ft <- abs(fft(y))
old.par <- par(mfrow=c(2, 1), yaxt="n", mgp=c(2,1,0), bty='l')
tToIndex = xr/res
tValues = ((1:length(y))-1) * tToIndex
plot(tValues,y,t='l', xlab="Zeit in s", ylab="signal",xlim=c(1,6),main="signal = 2 sin x + sin 10x ")
freqToIndex = xr
xvalues = ((1:length(ft))-1) / freqToIndex
plot(xvalues, ft,type='l'
,xlim=c(0,11), xlab='Frequenz in Hz', ylab="
|
Licensing
[edit]This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication. | |
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse |
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 08:58, 12 December 2022 | 512 × 398 (30 KB) | VectorVoyager (talk | contribs) | forgot to add "it" at line 104 | |
08:57, 12 December 2022 | 512 × 398 (30 KB) | VectorVoyager (talk | contribs) | add Turkish and Italian | ||
14:03, 22 April 2021 | 512 × 398 (29 KB) | Accountalive (talk | contribs) | Fine tuning and translation via <switch>[https://commons.wikimedia.org/wiki/Commons:Translation_possible/Learn_more#Multiple_translations_within_one_SVG_file] | ||
11:39, 22 April 2021 | 778 × 603 (140 KB) | Accountalive (talk | contribs) | Uploaded own work with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following 2 pages use this file:
File usage on other wikis
The following other wikis use this file:
- Usage on de.wikipedia.org
- Usage on en.wikipedia.org
- Usage on tr.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Width | 100% |
---|---|
Height | 100% |