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I managed to download the audio of 12 hours of white noise from http://www.youtube.com/watch?v=1KaOrSuWZeM into a mp3 file. The file is 661 MB. I wonder if it is possible to reduce its size without losing its sound quality noticeably?

My OS is Ubuntu 12.04. So I prefer software that works under it.

Thanks!

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Do you know the current bitrate? The size of the file doesn't tell that it's 320kbps or just 128, it just says that it's large. –  nerdwaller Nov 28 '12 at 22:54
    
@nerdwaller: how can I check that bitrate? I will do it once I finish downloading it. How is the bitrate help me reduce the file size? –  Ethan Nov 28 '12 at 23:00
    
I think exiftool does it, try exiftool -AudioBitrate nameOfFile.mp3 this article from SuperUser agrees (and provides other options). –  nerdwaller Nov 28 '12 at 23:04
    
Use MediaInfo...mediainfo.sourceforge.net/en –  Moab Nov 29 '12 at 3:55
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What exactly would be a noticeable loss of quality for white noise? –  terdon Nov 29 '12 at 13:19

3 Answers 3

Since it's white noise, why don't you just grab 10 seconds of it and loop that in your favourite media playing software?

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+1 for being awesome. –  nerdwaller Nov 28 '12 at 22:55

what about this site; http://simplynoise.com/ this goes on forever. (assuming web connection and power are in place forever) and there's (presumably) no compression. and; http://dirk.net/2009/07/14/white-noise-generator-for-linux/ gives instructions for a command line noise generator. (so you could control it, for sleeping etc.)

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The repeating of the white noise is not a good solution. Probably the white noise is needed for a scientific program/experiment.

If you repeat it every ten seconds, white noise IS NOT white noise any more, cause it has a period of 1/(10 s) = 0.1 Hz. In many cases this is unacceptable.

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