File:White noise spectrum.png

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White_noise_spectrum.png ‎(800 × 600 pixels, file size: 5 KB, MIME type: image/png)

This file is from Wikimedia Commons and may be used by other projects. The description on its file description page there is shown below.

Summary

Description
English: Spectrum analysis of uncompressed source for 10 seconds of white noise. Note the logarithmic frequency scale.

The analysis was done using Audacity, and plotting with gnuplot. Transparency was touched up in GIMP to make the graph background pure white.

(I find the log frequency plot here confusing, as it suggests that white noise may rise slightly with increasing frequency. A linear frequency scale would be better. However, for comparison with pink noise, having the log frequency plot keeps the frequency axis on both the same.)
Date
Source Own work
Author Javg (talk · contribs)
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File:White noise spectrum.svg is a vector version of this file. It should be used in place of this PNG file when not inferior.
File:White noise spectrum.png → File:White noise spectrum.svg
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Instructions

Obtain the frequency analysis from Audacity, set the maximum number of windows, and use a Hamming window. The following script was used to generate the image:

 
This plot was created with Gnuplot.

Licensing

Public domain I, the copyright holder of this work, release this work into the public domain. This applies worldwide.
In some countries this may not be legally possible; if so:
I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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File history

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Date/TimeThumbnailDimensionsUserComment
current14:54, 26 November 2006Thumbnail for version as of 14:54, 26 November 2006800 × 600 (5 KB)wikimediacommons>Javg== Summary == Spectrum analysis of uncompressed source for {{Audio|White noise.ogg|10 seconds of white noise}}. Note the logarithmic frequency scale. The analysis was done using Audacity, and plotting with gnuplot. Transparency was touched up in

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