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by TheOtherHobbes
2579 days ago
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The new attributes in the spec should make it possible - although not entirely easy - to include 2D position information with note on messages. I would have been happier with a more general note spec that left the number of attributes and their resolution open and system-definable. This would allow 2D/3D/4D/etc control of note events, super-high resolution pitch definitions for microtonal support, and so on. Bandwidth really isn't an issue any more, so there's no reason to limit the spec to a low common denominator. Even so - 2.0 is better than the limitations of 1.0. So that's progress. |
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It bears some resemblance to OpenAL source parameters which is little surprise as Creative seems to have written it. Some obvious differences:
- sources' positions are sent in azimuth/elevation/distance, i.e. spherical coordinates instead of rectangular
- the positions are always relative to the listener instead of often having a listener that moves around in a stationary 3D world
- the source is now allowed to be both spatialized and stereo with extra parameters for angular distance between the "speakers", the roll angle of the pair, etc.
I located the PDF maybe on Google, maybe by accident more than a few years ago. (I think it was from MIDI.org even then) I had to make an account at MIDI.org in January just to look through the specs, and it was there. Now I can't find a link so I'm afraid it disappeared behind the MMA member paywall. <sigh> Here's to progress.