[x3d-public] v4 Sound > Analyser node > x3dom > who's drawing?

[Andreas Plesch]

The pointset animation is quite deeply embedded in the actual spatial sound
implementation in soundController_SpatialSoundFilter.js as an internal
feature . Search for pointSet. (SpatialSound.js is just the x3dom node
interface).

This brings up how one would achieve this kind of amplitude animation in
regular x3d (with the SpatialSound nodes) ?

Hope this helps a little bit, Andreas


> Date: Wed, 1 Feb 2023 12:01:28 -0700
> From: GPU Group <gpugroup at gmail.com>
> To: X3D Graphics public mailing list <x3d-public at web3d.org>
> Subject: [x3d-public] v4 Sound > Analyser node > x3dom > who's
>         drawing?
> Message-ID:
>         <CAM2ogRfokXG=h=YmHRCDq1pa+OvGrGpC=
> 3PZtGbESrDpUvjsSg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> https://medialab.hmu.gr/minipages/x3domAudio/SpatialSoundFilter.xhtml
> Q. where  / what function / who is drawing the Analyser node frequency or
> time domain visualization. I don't see anything in Page Source looking at
> Analyser node fields for output.
>
> Thanks, Doug
> more..
>
> https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Visualizations_with_Web_Audio_API
>
> - web audio example of visualization using Analyser node gets a buffer of
> spatial or time-domain data on each draw loop, and draws it.
> Currently web3d Analyser node has no output fields defined for the spatial
> or time-domain output data.
>
>
> https://www.web3d.org/specifications/X3Dv4Draft/ISO-IEC19775-1v4-DIS/Part01/components/sound.html#Analyser
>  It is a mystery to me how we would use it to visualize without access to
> the data.
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-- 
Andreas Plesch
Waltham, MA 02453
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