Generating violet noise

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julia_p
Posts: 5
Joined: Sat Jan 06, 2018 2:08 pm
Operating System: OS X 10.11 El Capitan or later (macOS)

Re: Generating violet noise

Post by julia_p » Sat Jan 06, 2018 5:45 pm

Thank you very much for your answers, Trebor and steve, I really appreciate it!

Right, in the end that does make sense...
So the indicated dB in the frequency spectra don't have to be equal for the different colors of noise, right?
Did I understand it right that it's more important to have similar RMS levels of the waveforms?

Again, thanks a million!

Trebor
Posts: 4656
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows Vista

Re: Generating violet noise

Post by Trebor » Sat Jan 06, 2018 8:30 pm

Before you do RMS normalize, maybe remove everything below 30Hz and above 20kHz, if your project relates to human hearing. Generate will produce frequencies outwith that range which no-one can hear, but they will effect the result of RMS normalize if you don't remove them.
30Hz-20kHz.png
30Hz-20kHz.png (46.2 KiB) Viewed 175 times
30Hz-20kHz.XML
data to be imported into Audacity equalizer
(294 Bytes) Downloaded 12 times
Even with the same RMS value, noise will not necessarily sound equally loud, e.g. ...
violet then brown , both -20dB.flac
(460.28 KiB) Downloaded 16 times

julia_p
Posts: 5
Joined: Sat Jan 06, 2018 2:08 pm
Operating System: OS X 10.11 El Capitan or later (macOS)

Re: Generating violet noise

Post by julia_p » Sun Jan 07, 2018 6:00 pm

Perfect, worked very well just as described.
Again, steve and Trebor, thank you so so so much for your work and your answers!
Very much appreciated ;)

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