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Doug, again thanks for these suggestions. Dick and I reviewed your 43_MIDI/NOTES_midi.txt together today.</div>
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We think that this is potentially suitable for a future component.</div>
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It is worth noting that several steps towards that goal are worth pursuing.</div>
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<div class="elementToProof">Can we remedy the dearth of X3D examples using MIDI to show use cases and value,</div>
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<div class="elementToProof">Are there JavaScript libraries for such MIDI capability?</div>
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<div class="elementToProof">Might these nodes first be defined as X3D prototypes for further testing?</div>
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If browsers are going work on sound-related capabilities, then implementation of the X3D 4.0 Sound Component nodes for Web Audio API specification has potentially massive value that takes advantage of X3D spatialization.</div>
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Have fun listening to your X3D models! 8)</div>
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</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">all the best, Don</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">--</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Don Brutzman Naval Postgraduate School, Code USW/Br brutzman@nps.edu</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">X3D graphics, virtual worlds, navy robotics https://faculty.nps.edu/brutzman</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> GPU Group <gpugroup@gmail.com><br>
<b>Sent:</b> Thursday, August 22, 2024 11:20 AM<br>
<b>To:</b> Brutzman, Donald (Don) (CIV) <brutzman@nps.edu><br>
<b>Cc:</b> Extensible 3D (X3D) Graphics public discussion <x3d-public@web3d.org><br>
<b>Subject:</b> Re: [x3d-public] MIDI suggestions</span></div>
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<div style="direction: ltr;">Don,</div>
<div style="direction: ltr;">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. </div>
<div style="direction: ltr;">See this proposed separate 43 MIDI Component which allows that.</div>
<div style="direction: ltr;"><a href="https://freewrl.sourceforge.io/tests/43_MIDI/" id="OWAfa17ee49-0a68-659f-2d86-4fb93503baad" class="OWAAutoLink" shash="GTDOV7yvXGLxcMRxKyemHVZ8Pm+J4ZgDdITXykArGWoulyBHCorJMK7A85by7IlbU/CANoOy3sx99y+mVbqx6d7r2u5ggsyJ6oy6btQMZimAbCgRkSFw/e+icZL53lGBTPs3CDdKZNW3pLBvKX6NfG4WcisW4Q2cEYQuv96plS0=" originalsrc="https://freewrl.sourceforge.io/tests/43_MIDI/" data-auth="Verified">https://freewrl.sourceforge.io/tests/43_MIDI/</a> </div>
<div class="elementToProof" style="direction: ltr;"><a href="https://freewrl.sourceforge.io/tests/43_MIDI/NOTES_midi.txt" id="OWA4d55fd85-a3f0-bf60-7497-f535f2bfa857" class="OWAAutoLink" shash="OFe/g0+pnC4Pfp0FF5KoLj5NUjemGGOb5uwghVQgFxTON6fSHsxstj4P1C+2ept5Wr+vObC5jSjDNCLrX7RifdWLqYPL0ZqSL25fNrh0JzmNmmP5QZK2WsNz8jS/BfBEhS+rHWCSntMadeHH2Qu0D6Izyfj0nPM/j3KcNhucg5c=" originalsrc="https://freewrl.sourceforge.io/tests/43_MIDI/NOTES_midi.txt" data-auth="Verified">freewrl.sourceforge.io/tests/43_MIDI/NOTES_midi.txt</a> </div>
<div style="direction: ltr;">-Doug</div>
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<div style="direction: ltr;">On Thu, Aug 22, 2024 at 11:16 AM Brutzman, Donald (Don) (CIV) <<a href="mailto:brutzman@nps.edu" id="OWA8ecc993e-98ae-d254-4713-b0795bb55da6" class="OWAAutoLink">brutzman@nps.edu</a>> wrote:</div>
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Doug, thanks for your suggestions.</div>
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Regarding MIDI support:</div>
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<div style="direction: ltr;"><i>X3D 4.0 Architecture, 16 Sound component, 16.4.2 AudioClip</i></div>
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<div style="direction: ltr;"><a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioClip" id="OWA430bf0d5-b500-714b-8737-baa6596c956e" class="OWAAutoLink" data-auth="NotApplicable">https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioClip</a></div>
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<div style="direction: ltr;">The <i>url</i> field specifies the URL from which the sound file is loaded.
<a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioEncodingFormats" id="OWA810fdbc0-d294-c196-3f10-86b75e60646b" class="OWAAutoLink" data-auth="NotApplicable" style="text-align: left;">
16.2.6 Audio encoding formats</a> describes required and recommended file format support.
<a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/networking.html#URLs" id="OWA60da9096-89ac-7e34-e048-627d24b2c621" class="OWAAutoLink" data-auth="NotApplicable" style="text-align: left;">
9.2.1 URLs, URNs and URIs</a> contains details on the <i>url</i> field.</div>
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<div style="direction: ltr;"><i>X3D 4.0 Architecture, 16 Sound component, 16.2.6 Audio encoding formats</i></div>
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<div style="direction: ltr;"><a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioEncodingFormats" id="OWA12444f7b-25dc-abd5-ed47-db4c68caaaac" class="OWAAutoLink" data-auth="NotApplicable">https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/components/sound.html#AudioEncodingFormats</a></div>
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X3D browsers shall support at least the <i>wavefile</i> format in uncompressed PCM format (see
<a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/bibliography.html#WAV" id="OWAcced7004-3551-b846-9846-82dfc70a13c3" class="OWAAutoLink" data-auth="NotApplicable">
[WAV]</a>).</div>
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It is recommended that X3D browsers support the MIDI file type 1 sound format (see
<a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#MIDI-1" id="OWAbf7b0a5f-791e-3ddf-f30e-0de8aa35a6cc" class="OWAAutoLink" data-auth="NotApplicable">
[MIDI 1.0]</a>). MIDI files are presumed to use the General MIDI patch set.<br>
<span style="background-color: rgb(255, 255, 0);">X3D browser support is also recommended for MIDI 2.0</span> (see
<a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#MIDI-2" id="OWA8f2cba13-816c-1d22-21fd-1a8be400ed96" class="OWAAutoLink" data-auth="NotApplicable">
[MIDI 2.0]</a> and Web MIDI API (see <a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#W3C-WebMIDI" id="OWAaaf11107-4b2f-6b23-25d1-018d567e62b1" class="OWAAutoLink" data-auth="NotApplicable">
[W3C-WebMIDI]</a>).</div>
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It is also recommended that X3D browsers support the following formats:</div>
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Format=MP3, container=MP3, compressed (see <a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#I11172_1" id="OWA3da3a10a-41a8-e00a-6889-81779e229a4d" class="OWAAutoLink" data-auth="NotApplicable">
[I11172-1]</a>).</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 11pt; color: rgb(0, 0, 0); direction: ltr; margin-top: 4px;">
Format=AAC, container=MP4 (see <a href="https://www.web3d.org/specifications/X3Dv4/ISO-IEC19775-1v4-IS/Part01/references.html#14496_14" id="OWAfa8ea999-6a53-bc4d-3891-59ea0142f690" class="OWAAutoLink" data-auth="NotApplicable">
[14496-14]</a>).</li></ul>
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Example X3Dscene with MIDI content:</div>
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<div style="direction: ltr;">X3D Example Archives: X3D4WA, X3D for Web Authors, Chapter 05 Appearance Material Textures, Pixel Texture Snowman</div>
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<div style="direction: ltr; margin: 0px;"><a href="https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/PixelTextureSnowmanIndex.html" id="OWA4b7ef1cb-5bc4-2ec6-1c60-d606d1fd96de" class="OWAAutoLink" data-auth="NotApplicable">https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/PixelTextureSnowmanIndex.html</a></div>
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<div style="direction: ltr;"><a href="https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/PixelTextureSnowman.x3d" id="OWA592b63fe-5311-48d6-f3e6-9e2b6dcf071d" class="OWAAutoLink" data-auth="NotApplicable">https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/PixelTextureSnowman.x3d</a></div>
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<div style="direction: ltr;"><a href="https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/frosty2.mid" id="OWAfbba46c6-1cd9-2e77-14f0-2c52fc08fc27" class="OWAAutoLink" data-auth="NotApplicable">https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter05AppearanceMaterialTextures/frosty2.mid</a></div>
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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.</div>
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Have fun with X3D and MIDI! 8)</div>
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<div id="x_m_-6959943095254044046m_-2583774351546268228Signature">
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">all the best, Don</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">--</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Don Brutzman Naval Postgraduate School, Code USW/Br
<a href="mailto:brutzman@nps.edu" id="OWA777feeaa-8547-f9a0-a5fc-e54376ab429d" class="OWAAutoLink" style="margin-top: 0px; margin-bottom: 0px;">
brutzman@nps.edu</a></span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">Watkins 270, MOVES Institute, Monterey CA 93943-5000 USA +1.831.656.2149</span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;">X3D graphics, virtual worlds, navy robotics
<a href="https://faculty.nps.edu/brutzman" id="OWA828ffc51-b432-5fb5-b0e1-4744887360b3" class="OWAAutoLink" data-auth="NotApplicable" style="margin-top: 0px; margin-bottom: 0px;">
https://faculty.nps.edu/brutzman</a></span></p>
<p style="margin: 0in; font-family: Calibri, sans-serif; font-size: 11pt;"><span style="font-family: "Courier New"; font-size: 9pt;"> </span></p>
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<div id="x_m_-6959943095254044046m_-2583774351546268228divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> x3d-public <<a href="mailto:x3d-public-bounces@web3d.org" id="OWAa7ee29e3-4efb-3249-cabd-17f0216b665f" class="OWAAutoLink">x3d-public-bounces@web3d.org</a>>
on behalf of GPU Group via x3d-public <<a href="mailto:x3d-public@web3d.org" id="OWA712862bc-6330-8ed2-2d81-028fe143499d" class="OWAAutoLink">x3d-public@web3d.org</a>><br>
<b>Sent:</b> Wednesday, August 21, 2024 3:14 PM<br>
<b>To:</b> Extensible 3D (X3D) Graphics public discussion <<a href="mailto:x3d-public@web3d.org" id="OWA49423088-5225-bcbe-bbad-08d29c57db9c" class="OWAAutoLink">x3d-public@web3d.org</a>><br>
<b>Cc:</b> GPU Group <<a href="mailto:gpugroup@gmail.com" id="OWA304eca9e-d4af-c3cd-d5f7-c100c2d9aaa8" class="OWAAutoLink">gpugroup@gmail.com</a>><br>
<b>Subject:</b> Re: [x3d-public] Web3D 2024: HAnim Music Animation competition - Win cash prizes!</span>
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<div style="direction: ltr;">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.</div>
<div style="direction: ltr;">Something missing from prior work: a node that holds MIDI directly in ASCII format, for easy tinkering in X3D scene file.</div>
<div style="direction: ltr;">-Doug</div>
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