File:Square1000 spectrum.png

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Spectrum analysis of uncompressed source for 5 seconds of square wave at 1000 Hz^ⓘ. Note the logarithmic frequency scale. The y-range of this graph may not be appropriate for comparison of similar waveforms; it is designed to match the frequency spectrum graphs for audio noises on en:Colors of noise.

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

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 by n.

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