Broad Spectrum Sound Experiment
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June 30th, 2014

Broad spectrum sound created by overlaying 2000 constant sine waves with frequencies chosen at random between 20Hz and 20kHz (uniform sampling).
This sounds a lot like white noise (moreso than I thought it would) - if you look at the power spectrum it's reasonably similar (though there are some gaps because 2000 waves isn't enough to fully fill out the spectrum).
However I don't think it's (true) white noise because it lacks the necessary randomness to qualify as noise. Randomness is a big subject - there's no single test for this, though autocorrelation and statistical independence are commonly employed.
You can investigate this in Audacity (and similar programs) by using the Analyze | Plot Spectrum... function.

Comments

  • avatar
    RockitBoi 5 months, 2 weeks ago

    New here. Cant find forem. link would be great please. Interessting stuff Speedy!

  • avatar
    AlienXXX 5 months, 2 weeks ago

    Excellent sound experiment! Thanks for posting.

    You should include in the description a link to the forum discussion.

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Type
Wave (.wav)
Duration
00:05:000
Filesize
430.7 KB
Samplerate
44100.0 Hz
Bitdepth
16 bit
Channels
Mono
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