Image:AM signals.svg

From Wikipedia, the free encyclopedia

AM_signals.svg‎ (SVG file, nominally 800 × 600 pixels, file size: 40 KB)

Wikimedia Commons logo This is a file from the Wikimedia Commons. The description on its description page there is shown below.
Commons is a freely licensed media file repository. You can help.
Description

This shows the variations in the modulated signal with changes in the percentage en:modulation. Created using en:Gnuplot.
The commands are in the following sequence:

# describe the formula (x indicates time)
f(x) = (1 + m*sin(2*pi*100*x))*sin(2*pi*10000*x)
# set the terminal
set terminal svg size 800 600 |dynamic |enhanced
# set the output file
set output "am_signals.svg"
# set the 'default' axes properties 
set xlabel " "
set ylabel "Amplitude"
set grid
unset key
# start multiplot
set multiplot
# 50% Modulation
set origin 0,0.66
set title "50% Modulation"
set size 1,0.33
plot m=0.5, f(x)
# 100% Modulation
set origin 0,0.33
set size 1,0.33
set title "100% Modulation"
plot m=1, f(x)
# 150% Modulation"
set origin 0,0
set size 1,0.33
set xlabel "time"
plot m=1.5, f(x)

# end plotting
unset multiplot
unset output
set terminal win

(Note: The carrier frequency = 10000Hz = 10KHz and modulating signal frequency = 100Hz)
Source

Originally from en.wikipedia; description page is/was here.
Date

2005-12-28 (original upload date)
Author

Original uploader was Krishnavedala at en.wikipedia
Permission
(Reusing this image)

Licensed under the GFDL by the author; Released under the GNU Free Documentation License.

[edit] License information

NOTE: "subject to disclaimers" below may not actually apply, this was tagged with {{GFDL-user-en}}, and after May 2007, w:en:Template:GFDL-self did not require disclaimers. Please check the image description page on the English Wikipedia (or, if it has been deleted, ask an English Wikipedia administrator). See Wikipedia:GFDL standardization for details.
Krishnavedala at the English language Wikipedia, the copyright holder of this work, has published or hereby publishes it under the following license:
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.

Subject to disclaimers.

Asturianu | Български | Català | Deutsch | English | Español | Français | Gaeilge | Italiano | 한국어 | 日本語 | Polski | Português | Română | Türkçe | +/-

Note: This tag should not be used. For images that were released on the English Wikipedia using either GFDL or GFDL-self with disclaimers, use {{GFDL-user-en-with-disclaimers}}. For images without disclaimers please use {{GFDL-user-en-no-disclaimers}} instead. If you are the copyright holder of files that were released on Wikipedia consider removing the disclaimers.

[edit] Original upload log

(All user names refer to en.wikipedia)

  • 2005-12-28 18:23 Krishnavedala 800×600×0 (41347 bytes) Created using [[Gnuplot]]

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeDimensionsUserComment
current16:53, 2 May 2007800×600 (40 KB)Adambro ({{Information |Description=This shows the variations in the modulated signal with changes in the percentage en:modulation. Created using en:Gnuplot.<br> The commands are in the following sequence: <pre> # describe t)
The following pages on the English Wikipedia link to this file (pages on other projects are not listed):