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File:Pcm.svg

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Size of this PNG preview of this SVG file:500 × 375 pixels.Other resolutions:320 × 240 pixels |640 × 480 pixels |1,024 × 768 pixels |1,280 × 960 pixels |2,560 × 1,920 pixels.

Original file(SVG file, nominally 500 × 375 pixels, file size: 21 KB)

This is a file from theWikimedia Commons. Information from itsdescription page there is shown below.
Commons is a freely licensed media file repository.You can help.

Summary

An example of 4-bitpulse code modulation (16 different binary-coded possibilities) showing quantization and sampling of a signal (red).Generated by myself using Inkscape to heavily modify gnuplot output.

See:4-bit-linear-PCM.svg

Details

Generated curve and scale with the following gnuplot script:

This plot was created withGnuplot.

Source code

InfoField

Gnuplot code

setterminalsvgsize16001200fname"Times New Roman"fsize48enhancedsetoutput"pcm.svg"setsamples1000setnokeysetgridyticslw4setxtics32setmxtics32setytics1setnoxzeroaxissetnoyzeroaxissetnobordersetxrange[0:32]setyrange[0:15]plot7.5*sin(2*pi*x/32)+7.5lw4

Floor function was then performed by hand in Inkscape, along with various other image quality tweaks.

Other versions

[edit]

.svg:

Russian .svg
Chinese (China) .svg
Chinese (Taiwan) .svg
int .svg

.png:

Estonian .png
English .png

Licensing

I, the copyright holder of this work, hereby publish it under the following licenses:

Permission is granted to copy, distribute and/or modify this document under the terms of theGNU Free Documentation License, Version 1.2 or any later version published by theFree Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitledGNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue

	This file is licensed under theCreative Commons Attribution-Share Alike 3.0 Unported license.

	You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. share alike – If you remix, transform, or build upon the material, you must distribute your contributions under thesame or compatible license as the original.
	This licensing tag was added to this file as part of the GFDLlicensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue

This file is licensed under theCreative Commons Attribution-Share Alike2.5 Generic,2.0 Generic and1.0 Generic license.

You are free:

to share – to copy, distribute and transmit the work
to remix – to adapt the work

Under the following conditions:

attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under thesame or compatible license as the original.

https://creativecommons.org/licenses/by-sa/2.5CC BY-SA 2.5Creative Commons Attribution-Share Alike 2.5truetrue

You may select the license of your choice.

Captions

English

sine wave

Items portrayed in this file

depicts

copyright status

copyrighted

copyright license

GNU Free Documentation License, version 1.2 or later

Creative Commons Attribution-ShareAlike 1.0 Generic

Creative Commons Attribution-ShareAlike 3.0 Unported

Creative Commons Attribution-ShareAlike 2.5 Generic

Creative Commons Attribution-ShareAlike 2.0 Generic

File history

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

	Date/Time	Dimensions	User	Comment
current	20:51, 23 March 2014	500 × 375(21 KB)	Aquegg~commonswiki	Use 'lollipop' notation, per Lyons, "Understanding DSP", 2001
	15:13, 10 May 2006	800 × 600(17 KB)	Ktims	Okay removed the border, it looks like crap.
	15:08, 10 May 2006	800 × 600(17 KB)	Ktims	Fixed transparency a bit more, added border.
	13:12, 10 May 2006	800 × 600(21 KB)	Ktims	Shrunk due to Wiki's crappy rasterizing of SVGs and tweaked to work with transparency.
	11:26, 15 March 2006	1,600 × 1,200(23 KB)	Ktims	An example of 4-bitpulse code modulation showing quantization and sampling.