Noise signal from the past

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JMW1937
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Noise signal from the past

Post by JMW1937 » Fri May 09, 2014 10:41 am

Audacity 2.0.5 under Windows XP Home

I have a recording with the filename 'Audacity triangular white' made in 1997. It is different from the white noise generated by 2.0.5 in that it has a triangular amplitude-probability distribution (APD) whereas 2.0.5 produces white noise with a uniform (rectangular) APD. Can anyone remember this 'triangular' noise and whether it was intended as a dither noise?

I think there should be a mention that the APD of the 2.0.5 white noise is uniform and not Gaussian. The pink noise IS Gaussian.
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steve
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Re: Noise signal from the past

Post by steve » Fri May 09, 2014 12:30 pm

JMW1937 wrote:I have a recording with the filename 'Audacity triangular white' made in 1997.
There must be some mistake. The first release of Audacity was in 2000.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
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Robert J. H.
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Re: Noise signal from the past

Post by Robert J. H. » Fri May 09, 2014 1:44 pm

Out of curiosity, how did you see that the current white noise has a uniform distribution?
However, it is true and there should be actually a preset for Gaussian noise too.
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