Re: LOGO-L> Re: Sound card limits for quasi-parallelism in turtle use ?

[George Mills <mills@softronix.com>]

This is not any fault of Logo implementations but
more how the sound cards are designed.

They can typically can handle:

1 Wave
4 FM Synthesized notes.
4 MIDI instruments.

MSWLogo supports the 1 Wave and can play 4 simultaneous MIDI Notes.
I believe you can have the wave going along with the others.
The wave is often the "Background" in Windows games.

However "Waves" can be PreProcessed, Merged or built on the
fly by the CPU and fed to the card, which is tricky but do able.

Jeff wrote:
> 
> Klaus
> polyphony has long been a wish-list item for those of us who'd like a
> superset logo. But it seems to be one of those things at the margins that
> gets sacrificed when the unavoidable and inevitable compromises are made
> by designers and implementers. In the eighties there were several purpose
> built 'music' logos available, and Atari logo let(lets?) you address the
> wave form. I've wanted a solution where in a multiple turtle environment,
> each turtle has a voice as one of its attributes. The beta release of
> MicroWorlds V1 did allow chords.
> The closest I can get is faking it, using Microworlds V2 and LAUNCH to
> set two melodies going, slightly out of phase...but two is all you can do.
> ...good luck with this.
> Jeff Richardson
> Monash University
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George Mills
email: mills@softronix.com
http://www.softronix.com
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