[x3d-public] MIDI suggestions

[GPU Group]

Don,
The current Sound component doesn't have a way to look at each MIDI note as
an event, nor to create MIDI notes with events during scene execution.
See this proposed separate 43 MIDI Component which allows that.
https://freewrl.sourceforge.io/tests/43_MIDI/
freewrl.sourceforge.io/tests/43_MIDI/NOTES_midi.txt
-Doug

On Thu, Aug 22, 2024 at 11:16 AM Brutzman, Donald (Don) (CIV) <
brutzman at nps.edu> wrote:

> Doug, thanks for your suggestions.
>
> Regarding MIDI support:
>
>
>    - *X3D 4.0 Architecture, 16 Sound component, 16.4.2 AudioClip*
>    -
>    https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioClip
>    - The *url* field specifies the URL from which the sound file is
>    loaded. 16.2.6 Audio encoding formats
>    <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioEncodingFormats> describes
>    required and recommended file format support. 9.2.1 URLs, URNs and URIs
>    <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/networking.html#URLs> contains
>    details on the *url* field.
>
>
>
>    - *X3D 4.0 Architecture, 16 Sound component, 16.2.6 Audio encoding
>    formats*
>    -
>    https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioEncodingFormats
>
> X3D browsers shall support at least the *wavefile* format in uncompressed
> PCM format (see [WAV]
> <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/bibliography.html#WAV>
> ).
> It is recommended that X3D browsers support the MIDI file type 1 sound
> format (see [MIDI 1.0]
> <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#MIDI-1>).
> MIDI files are presumed to use the General MIDI patch set.
> X3D browser support is also recommended for MIDI 2.0 (see [MIDI 2.0]
> <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#MIDI-2> and
> Web MIDI API (see [W3C-WebMIDI]
> <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#W3C-WebMIDI>
> ).
> It is also recommended that X3D browsers support the following formats:
>
>    - Format=MP3, container=MP3, compressed (see [I11172-1]
>    <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#I11172_1>
>    ).
>    - Format=AAC, container=MP4 (see [14496-14]
>    <https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#14496_14>
>    ).
>
> Example X3Dscene with MIDI content:
>
>    - X3D Example Archives: X3D4WA, X3D for Web Authors, Chapter 05
>    Appearance Material Textures, Pixel Texture Snowman
>    -
>    https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/PixelTextureSnowmanIndex.html
>    -
>    https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/PixelTextureSnowman.x3d
>    -
>    https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/frosty2.mid
>
>
> Regarding MIDI content in ASCII form, it is certainly not disallowed in
> the X3D specification.   Might you please send some references and an
> example?  Perhaps an ASCII plaintext version of frosty2.
>
> Have fun with X3D and MIDI!  8)
>
> all the best, Don
>
> --
>
> Don Brutzman  Naval Postgraduate School, Code USW/Br
> brutzman at nps.edu
>
> Watkins 270,  MOVES Institute, Monterey CA 93943-5000 USA
> +1.831.656.2149
>
> X3D graphics, virtual worlds, navy robotics
> https://faculty.nps.edu/brutzman
>
>
>
> ------------------------------
> *From:* x3d-public <x3d-public-bounces at web3d.org> on behalf of GPU Group
> via x3d-public <x3d-public at web3d.org>
> *Sent:* Wednesday, August 21, 2024 3:14 PM
> *To:* Extensible 3D (X3D) Graphics public discussion <x3d-public at web3d.org
> >
> *Cc:* GPU Group <gpugroup at gmail.com>
> *Subject:* Re: [x3d-public] Web3D 2024: HAnim Music Animation competition
> - Win cash prizes!
>
> MIDI > at least one web3d browser supports MIDI with nodes that give
> events, which could be used to synchronize HAnim motions to music tones /
> beats, or vice versa.
> Something missing from prior work: a node that holds MIDI directly in
> ASCII format, for easy tinkering in X3D scene file.
> -Doug
>
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