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17 Apr 2021 07:37:21 EDT (-0400)
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From: ingo
Subject: The Sounds of POV-Ray
Date: 1 Apr 2021 10:29:42
Message: <XnsACFFA7C775533seed7@news.povray.org>
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


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From: William F Pokorny
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 11:21:08
Message: <6065e4e4$1@news.povray.org>
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?

I'm think something along the lines of generating a hook for a collision 
sound when a given collision between two shapes happens. The hook could 
be generated in a generic way allowing for other animation changes - the 
sound hook would track.

I'm guessing the synchronization must have been worked out by those 
doing renders (a), but I don't recall ever running across someone doing 
this in POV-Ray animations from the SDL.

(a) Been posted about in the past, but these guys at 
https://www.animusic.com/ have been at something like the merge of 
animation and music for long while.

Bill P.


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From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 11:52:34
Message: <XnsACFFB5D42DEA3seed7@news.povray.org>
in news:6065e4e4$1@news.povray.org William F Pokorny wrote:

> 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?
> 

There are several way I'm exploring. Nothing is stable yet. But what one 
can do is assign a kind of timeline to each sonding object. The animation 
clock is perfect for that. Maybe add an extreme clock divider to get a 
better granularity within the 1/30 second of a frame. 
Then use that for writing events to a file. These can be midi notes, or 
midi evelopes, or OSC data, or just values in a range to be interpreted 
later.
For a bouncing ball you could start an event at the moment of contact. 
Then create an envelope depending on how much a ball is squished before it 
bounces back. Use such data to modulate a sound source.

The fun thing is that POV-Ray has all these nice functions that 
synthesisers have not. Things that are available hare have to written in 
SuperCollider or Csound. Also I think many of the DSP stuff can be done in 
POV-Ray, but it is slow.

Next up, wave teraain synthesis. I think tomorrow.

Ingo


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From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 12:51:36
Message: <XnsACFFBFDB84914seed7@news.povray.org>
in news:XnsACFFB5D42DEA3seed7@news.povray.org ingo wrote:

> Next up, wave terrain synthesis.

https://ingoogni.nl/povray/sounds-of-povray/the-sound-of-height-fields/

only direct link for now

Ingo


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From: jr
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 14:40:00
Message: <web.60661251e8731e1379819d986cde94f1@news.povray.org>
hi,

ingo <ing### [at] tagpovrayorg> wrote:
> > Next up, wave terrain synthesis.
>
> https://ingoogni.nl/povray/sounds-of-povray/the-sound-of-height-fields/

while I'm not able to relate the visual (HF with circles) to the sound played,
this is very interesting stuff.  more please.  :-)


regards, jr.


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From: Robert McGregor
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 16:35:00
Message: <web.60662e36e8731e1387570eabd4644d08@news.povray.org>
ingo <ing### [at] tagpovrayorg> 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

Bravo, this is super cool! My mind is spinning with all sorts of applications!

Thanks for this, I look forward to reading more :)


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From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 16:49:46
Message: <XnsACFFE837E9FE8seed7@news.povray.org>
in news:web.60661251e8731e1379819d986cde94f1@news.povray.org jr wrote:

> more please

How about the sound of Ken Perlin and a Klein Bottle?

Ingo


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From: Robert McGregor
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 17:00:00
Message: <web.606633a7e8731e1387570eabd4644d08@news.povray.org>
Ingo, I did notice when trying out your code just now that in your files you
use:

#version 3.7;

But when I rendered with the v3.7 executable it choked, which confused me for a
moment until I realized you're using the new v3.8 keyword tau.

It renders as expected with the v3.8 executable so to prevent confusion you
might want to change that to:

#version 3.8;

Again, excellent work!


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From: Bald Eagle
Subject: Re: The Sounds of POV-Ray
Date: 1 Apr 2021 19:00:00
Message: <web.60664f78e8731e131f9dae3025979125@news.povray.org>
ingo <ing### [at] tagpovrayorg> wrote:
> in news:web.60661251e8731e1379819d986cde94f1@news.povray.org jr wrote:
>
> > more please
>
> How about the sound of Ken Perlin and a Klein Bottle?
>
> Ingo

Perlin Noise, Simplex Noise, or a Perlin smooth-stepped function?    ;)
https://en.wikipedia.org/wiki/Smoothstep#Variations

The Klein bottle sounds interesting, as does a Moebius strip.

I am thinking that I'd like to see a "simple" spline-driven song as an
animation, with sheet music.  Likely jr would love to see animated media musical
notes.

I find this extremely interesting, because one of the ideas I had about the FFT
was to analyze sound files, identify notes, and then do what you're doing.

What do you think about a POV-Ray modeled phonograph, with a vinyl album made
from a heightfield?   The grooves could be a spiral function.  :)

Or an old Edison wax cylinder phonograph.


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From: ingo
Subject: Re: The Sounds of POV-Ray
Date: 2 Apr 2021 01:44:01
Message: <XnsAD004EAC7E862seed7@news.povray.org>
in news:web.606633a7e8731e1387570eabd4644d08@news.povray.org Robert 
McGregor wrote:

>  realized you're using the new v3.8 keyword tau

uach. good catch. Mmm as 3.8 isn't out I'll stick to 3.7 and adjust the 
scenes for that.

Thanks


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