[sdiy] (OT?) FEEDBACK as a topic in electronics, music, science, etc?? BOOKS?

[Dave Manley]

Steve Reich (IIRC) did a feedback piece where he had a microphone mounted
under a speaker that was on a pendulum.  As the pendulum brought the speaker
in proximity of the mic it created feedback.  This was the instrument for
the composition.  Your call if it was musical or artistic :-)

 On Thu 11/09/08  9:58 AM , "Scott Nordlund" gsn10 at hotmail.com sent:
> 
> > Great thread and since I've been meaning to ask
> about this as well - I thought this question might be relevant. Hope you
> don't mind Dan.>
> > Can anyone comment on the main qualities
> affecting 'musical' (or, I guess, in the case of video - 'artistic')
> feedback?>
> > Is it...
> >
> > a) The time delay - e.g. the time it takes a
> signal to get from the speakers of my amp and back into my guitar
> pickups> b) The change in the shape of the waveform e.g.
> small inaccuracies that start to stack up infinitely> c) Other...