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Chapter 20. WHY X3D? > I Hear You Calling

I Hear You Calling

As you may recall from Chapter 9, "Customizing Light, Background, Fog and Sound," VRML's sound model provides support for MIDI and WAV files. Unfortunately, most VRML browsers' support of MIDI isn't what you might hope for. Many of the browsers that implement MIDI tend to slow navigation down to a crawl when the sound is playing, and MIDI rarely synchronizes properly to other events in the world unless you have a very high-end computer and an undemanding VRML world.

Synchronization is a serious problem. Often you don't want to start a sound track until all the geometry has downloaded that goes along with it. At other times you'd like to have your sounds play in sync with events taking place in the world (when a blacksmith strikes his anvil, for example, the "clang" sound should play when the hammer strikes, not before or after). It turns out that doing either of these things is a very difficult problem in VRML.


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