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in news:XnsACFFA7C775533seed7@news.povray.org ingo wrote:
The ANS syntesizer works,
https://ingoogni.nl/povray/sounds-of-povray/povray-ans/
ingo
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ingo <ing### [at] tagpovrayorg> wrote:
> in news:XnsACFFA7C775533seed7@news.povray.org ingo wrote:
>
> The ANS syntesizer works,
>
> https://ingoogni.nl/povray/sounds-of-povray/povray-ans/
>
> ingo
Very nice. You're making some pretty cool progress :)
"In POV-Ray there is no FFT, so I have to use brute force"
I converted Paul Bourke's c++ code to SDL
http://web.ipac.caltech.edu/staff/fmasci/home/astro_refs/FFT_DFTsummaryAndCode.pdf
http://news.povray.org/povray.binaries.images/thread/%3Cweb.58b813187922eedfc437ac910@news.povray.org%3E/
I would love to have FFT be an internal function. No one saw the value for a
raytracer.
https://ingoogni.nl/contact/
403 Forbidden!
You don't have permission to access the requested object. It is either
read-protected or not readable by the server.
also a bad contact _link_ on the ANS page.
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in news:web.607dbe49e8731e131f9dae3025979125@news.povray.org Bald Eagle
wrote:
> 403 Forbidden!
>
Yes, dunno what to put there yet. Maybe just a link here for now. The blog
won't be all pov-ray, but is for now.
Completely missed your code, I'll investigate. I may have thought it was
about a FFT lib for POV-Ray, or just not pay attention. It can be usefull
on images too, not just sound.
Thanks,
Ingo
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ingo <ing### [at] tagpovrayorg> wrote:
> Completely missed your code, I'll investigate. I may have thought it was
> about a FFT lib for POV-Ray, or just not pay attention. It can be usefull
> on images too, not just sound.
I'll have to check and see if I ever posted the code.
AFAIK, The 1D FFT works just fine.
I also tried a 2D FFT, for use with images, but I never ironed out all the
kinks.
I _think_ it works ok, and I just needed to figure out how to "shift everything
into the center".
Gimme a bit and I will dig up the scene files.
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OK,
Here's the 1D FFT scene.
I removed a bunch of extraneous cruft.
I add 5 sine waves of different frequency to get the black curve.
The yellow lines indicate the frequencies of the component sine waves.
The magenta lines are the output of the FFT.
I have no idea what the negative magenta signal near 0 is. Maybe some
kind of "ringing" artefact?
Post a reply to this message
Attachments:
Download '1d_fft.pov.txt' (10 KB)
Download '1d_fft.png' (77 KB)
Preview of image '1d_fft.png'
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in news:web.607df42de8731e131f9dae3025979125@news.povray.org Bald Eagle
wrote:
> I'll have to check and see if I ever posted the code.
This?
http://news.povray.org/povray.binaries.images/message/%
3Cweb.58bffecbe7e104a8c437ac910%40news.povray.org%3E/#%
3Cweb.58bffecbe7e104a8c437ac910%40news.povray.org%3E
Haven't looked at it yet.
ingo
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in news:XnsACFFA7C775533seed7@news.povray.org ingo wrote:
Amplitude modulation and ADSR:
https://ingoogni.nl/povray/sounds-of-povray/povray-modulates-amplitude/
Ingo
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William F Pokorny <ano### [at] anonymousorg> wrote:
> On 4/1/21 10:29 AM, ingo wrote:
> > https://ingoogni.nl/povray/sounds-of-povray/the-sound-of-povray/
> >
> > The last weeks I've been exploring ways to use POV-Ray for sound creation.
> > It actaully works quite simple. I put up a first article on it. Very basic
> > (the site also). More will follow,
> >
> > Ingo
> >
> Wow. That's cool! :-)
>
> I was also not aware of https://supercollider.github.io
>
> ---
> I've done almost no animation over the years, but a question I've
> carried around for a long while is:
>
> Has anyone has figured out how to add sound synchronization 'hooks' into
> rendered frames or file associated frames during particular frame
> renders by Pov-Ray?
Ages ago, I made this. I actually used povray to write a file for csound, based
on the timing of collisions in my scene:
https://www.youtube.com/watch?v=4dsRyZGt_co
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On 5/14/21 10:40 PM, gregjohn wrote:
> William F Pokorny <ano### [at] anonymousorg> wrote:
..
>
> Ages ago, I made this. I actually used povray to write a file for csound, based
> on the timing of collisions in my scene:
> https://www.youtube.com/watch?v=4dsRyZGt_co
...
Neat! Something I missed. Thanks for the pointer & post.
Bill P.
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in news:web.609f34b2e8731e1327da7502f3fd986@news.povray.org gregjohn
wrote:
> I actually used povray to write a file for csound
Yep, I remember that.
Ingo
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