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From: leconte@irisa.fr (Thierry Leconte)
Newsgroups: rec.audio.high-end
Subject: Re: crossover design / bi-amping
Message-ID: <9230@uwm.edu>
Date: 30 Jan 91 13:44:52 GMT
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Approved: tjk@csd4.csd.uwm.edu
Originator: tjk@csd4.csd.uwm.edu

>From article <9199@uwm.edu>, by Jon.Fairbairn@computer-lab.cambridge.ac.uk (Jon Fairbairn):
> No one has mentioned the idea of using a digital crossover.
> In theory this could solve all the problems of phase and slope.
Well It's a good idea if all your sources are digital.
If not you have to convert from analog to digital before
the digital crossover then to convert from digital to analog
after...not a big win.

And how about a true digital amp?
Now with bitstream technologie digital to analog convertion
consist in the modulation of density or width of a high
frequency(>> 1Mhz) pulse signal.
Why not  modulate a high level ouput signal which will
be send directly to the speakers  ?
(in fact a sort of digital class D amp)
I think that a simple passive output filter will suffice.

Any comment ?

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