Path: utzoo!censor!geac!torsqnt!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!castle.edinburgh.ac.uk
From: aipp@castle.edinburgh.ac.uk (Pavlos Papageorgiou)
Newsgroups: rec.audio.high-end
Subject: Re: (very) Unconventional Speakers
Message-ID: <2678@uwm.edu>
Date: 1 Mar 90 13:53:07 GMT
Sender: news@uwm.edu
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Approved: tjk@csd4.csd.uwm.edu



*** Un-Disclaimer: this is a serious posting! [Sure it is! -tjk]

	Has anybody out there investigated, or at least considered, the
concept of a 'digital speaker'?  --- meaning a method for driving the
cone in discrete steps. 
	This might be accomplished by any means, from the rather banale
of building a high-power ADC in the speaker box, through PWM, to fancier
tricks like having multiple windings on the speaker coil (having 2, 4, 8
etc.  loops), or having a feedback mechanism to sense the position of
the cone and a computer to then generate the appropriate currents to
move the cone smoothly to the next position. 
	I know it's far off, but I think it makes sense.
	All debate welcome :-) [Not bloody likely. -tjk]


	Pavlos
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	Man who is born of a woman has but a short time to live.