POV-Ray : Newsgroups : povray.binaries.images : audio spectrum : Re: audio spectrum Server Time
23 Feb 2025 03:58:21 EST (-0500)
  Re: audio spectrum  
From: Leroy
Date: 11 Feb 2025 16:05:00
Message: <web.67abba627262bfb6baacd1fcf712fc00@news.povray.org>
"ingo" <nomail@nomail> wrote:
> an audio spectrum visualizer using FFT of a set of parametric filters on a log
> sine sweep 20 - 22050 Hz, 2^15 samples. The resolution in the low end is low and
> wavey. The result is normalized.
>
> The filters:
>
> //ini_filter(peak(dB), Freq(Hz), bandwidth(Hz), samplerate)
>
> #declare band4000 = init_filter(+6, 4000, 520, sampleRate);
> #declare band1000 = init_filter(+3, 1000, 520, sampleRate);
> #declare band500 = init_filter(-9, 500, 100, sampleRate);
> #declare band200 = init_filter(-5, 200, 150, sampleRate);

Cool!! Using POV!? Like to see the code.
It's been awhile since I played with audio on POV. Audacity has a sampling
function that lets you get and place sound data. Can't remember all the stuff I
did, but I mostly played with wave forms.

Have Fun!


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