File:Blue noise.ogg

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Blue_noise.ogg ‎(Ogg Vorbis sound file, length 10 s, 74 kbps, file size: 90 KB)

Description 10 seconds of blue noise with an RMS value of -12.2 dB.
Histogram
Frequency analysis
Date
Source

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.
Author Omegatron
Permission
(Reusing this file)
I, the copyright holder of this work, hereby publish it under the following licenses:
w:en:Creative Commons
attribution share alike
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported, 2.5 Generic, 2.0 Generic and 1.0 Generic license.
You are free:
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  • 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 the same or compatible license as the original.
GNU head Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free 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 entitled GNU Free Documentation License.
You may select the license of your choice.
(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.)

Assessment

Media of the day This file was selected as the media of the day for 30 July 2023. It was captioned as follows:
English: Resurrection, by Leo Tolstoy, Book 1, in English. Translated by Louise Maude. Chapter 1 - Maslova in Prison.
Other languages
Čeština: Četba z části románu Vzkříšení (Resurrection) Lva Nikolajeviče Tolstého v angličtině, překlad Louise Maude, kapitola 1 - Maslova in Prison (Maslova ve vězení).
English: Resurrection, by Leo Tolstoy, Book 1, in English. Translated by Louise Maude. Chapter 1 - Maslova in Prison.
Français : Résurrection, par Léon Tolstoï, livre 1, en anglais. Traduction par Louise Maude. Chapitre 1 - Maslova in Prison.
Эрзянь: «Вельмевтема» (Resurrection), Лев Тольстойень, 1-це книгась, англань кельсэ. Ютавтыцязо Луиза Мод (Louise Maude). 1-це прявксось - Маслова тюрьмасо.
Українська: «Воскресіння», Лев Толстой, книга 1, англійською мовою. Переклад Луїзи Мод. Розділ 1 - «Маслова у в'язниці».

Captions

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Items portrayed in this file

depicts

inception

27 April 2008

MIME type

application/ogg

checksum

c4163e9a7c01f85f0f1b2e941f3f959473c1fc71

determination method: SHA-1

data size

91,875 byte

duration

10 second

File history

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

Date/TimeThumbnailDimensionsUserComment
current03:54, 28 April 200810 s (90 KB)OmegatronOgg Vorbis version
03:53, 28 April 200810 s (876 KB)OmegatronLossless FLAC version
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