POV-Ray : Newsgroups : povray.general : The Sounds of POV-Ray Server Time
16 Jun 2021 10:11:30 EDT (-0400)
  The Sounds of POV-Ray (Message 25 to 34 of 34)  
<<< Previous 10 Messages Goto Initial 10 Messages
From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 19 Apr 2021 10:41:22
Message: <XnsAD11A9C4D31C6seed7@news.povray.org>
in news:XnsACFFA7C775533seed7@news.povray.org ingo wrote:

The ANS syntesizer works,

https://ingoogni.nl/povray/sounds-of-povray/povray-ans/

ingo


Post a reply to this message

From: Bald Eagle
Subject: Re: The Sounds of POV-Ray
Date: 19 Apr 2021 13:35:00
Message: <web.607dbe49e8731e131f9dae3025979125@news.povray.org>
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.


Post a reply to this message

From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 19 Apr 2021 14:35:09
Message: <XnsAD11D1678319Bseed7@news.povray.org>
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


Post a reply to this message

From: Bald Eagle
Subject: Re: The Sounds of POV-Ray
Date: 19 Apr 2021 17:25:00
Message: <web.607df42de8731e131f9dae3025979125@news.povray.org>
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.


Post a reply to this message

From: Bald Eagle
Subject: Re: The Sounds of POV-Ray
Date: 19 Apr 2021 19:52:02
Message: <607e17a2$1@news.povray.org>
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'
1d_fft.png


 

From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 20 Apr 2021 01:42:58
Message: <XnsAD124E78CEEE4seed7@news.povray.org>
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


Post a reply to this message

From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 30 Apr 2021 08:03:47
Message: <XnsAD1C8F0EF7050seed7@news.povray.org>
in news:XnsACFFA7C775533seed7@news.povray.org ingo wrote:


Amplitude modulation and ADSR:
https://ingoogni.nl/povray/sounds-of-povray/povray-modulates-amplitude/

Ingo


Post a reply to this message

From: gregjohn
Subject: Re: The Sounds of POV-Ray
Date: 14 May 2021 22:45:00
Message: <web.609f34b2e8731e1327da7502f3fd986@news.povray.org>
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


Post a reply to this message

From: William F Pokorny
Subject: Re: The Sounds of POV-Ray
Date: 15 May 2021 06:38:10
Message: <609fa492$1@news.povray.org>
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.


Post a reply to this message

From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 15 May 2021 09:03:49
Message: <XnsAD2B993AA1417seed7@news.povray.org>
in news:web.609f34b2e8731e1327da7502f3fd986@news.povray.org gregjohn 
wrote:

> I actually used povray to write a file for csound

Yep, I remember that.

Ingo


Post a reply to this message

<<< Previous 10 Messages Goto Initial 10 Messages

Copyright 2003-2021 Persistence of Vision Raytracer Pty. Ltd.