Image:Blue noise.ogg
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Blue_noise.ogg (Ogg Vorbis sound file, length 10s, 74kbps)
| This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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| Description | 10 seconds of blue noise with an RMS value of -12.2 dB.
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See Image:White noise.ogg for details on generation and conversion. Since there's no simple way to generate blue noise, I just used powernoise.m by Max Little, which generates the spectrum first, and then uses an inverse-FFT to produce the noise. blue=powernoise(1,48000*10,'normalize'); wavwrite(blue,48000,16,'blue.wav'); The pristine, lossless file is accessible in File history, while the smaller lossy file is the one included in articles. |
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| Permission (Reusing this image) |
(In short, this means that you can copy and modify the image freely as long as you provide attribution; preferably in the form of a link back to this page.) |
File history
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| Date/Time | Dimensions | User | Comment | |
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| current | 03:54, 28 April 2008 | 10s (90 KB) | Omegatron | (Ogg Vorbis version) |
| 03:53, 28 April 2008 | 10s (876 KB) | Omegatron | (Lossless FLAC version) |
File links
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