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| View Original: | White noise spectrum.png (800x600) | |||
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| Keywords: White noise spectrum.png Spectrum analysis of uncompressed source for 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 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 comaprison with pink noise having the log frequency plot keeps the frequency axis on both the same White noise spectrum svg 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 n set terminal png transparent font /usr/share/fonts/truetype/ttf-bitstream-vera/Vera ttf size 800 600 enhanced set output white_noise_spectrum png this seems to fix the trailers on the TTF font for the x-label set bmargin 4 enable grid set grid set grid mxtics set up x-axis set logscale x 10 set xrange 100 22000 set xlabel Frequency Hz set xtics border nomirror set up y-axis set yrange -40 0 set ylabel Intensity dB set ytics border nomirror again to deal with bad bboxes on the TTF set key height 1 box plot the output from Audacity plot white_noise txt title White Noise with filledcurves x1 3 White noise | ||||
