strange idea....now even strangerer ...and also now way off topic

[Paul Maddox]

Roel,

  Easist thing to do is video feedback...

  Point a cmacorder at the screen, feed the camcorder into 
the telly turn down the brightness... turn off all thie lights..
now slowly bring up the brightness/contrast and bingo video feedback,
remember the early doctor who intro?

  If you turn the brightness just below the point of feedback
and hold a match infront you get some wicked effects.. trying
bringing the brightness back up a little so you get a slow pattern and
putting you hand infront, wicked...

  Have fun..

  Paul


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-----Original Message-----
From:	Roel Das [SMTP:Roel.Das at student.groept.be]
Sent:	Wednesday, December 22, 1999 7:48 PM
To:	Synth DIY
Subject:	Re: strange idea....now even strangerer

This reminds me of another topic. Are there some easy things one can do with
TV-sets or something, to help my friends psychedelic band (i am the
preliminary mixer) get a show? They've got an oil-filter, but they could
really use some more stuff. Is their an easy way to generate video-signals
to? (I haven't studied my course on media's yet...)

Roel


-----Oorspronkelijk bericht-----
Van: Martin Czech <martin.czech at intermetall.de>
Aan: synth-diy at mailhost.bpa.nl <synth-diy at mailhost.bpa.nl>;
pfperry at melbpc.org.au <pfperry at melbpc.org.au>
Datum: woensdag 22 december 1999 17:13
Onderwerp: Re: strange idea....now even stranger


>:::paul perry melbourne australia
>:::
>:::BTW anyone making hand operated LFO generators, try using moire
>:::effects and a LDR. You can photocopy line and screen patterns
>:::onto overhead projection transparencies.
>
>Reminds me of a toy I had: a motor with carton disk, more or
>less shadowing a bulb so that more or less light will fall
>onto a ldr.
>
>
>The very first tv scanners worked in a similar way.
>
>More motors, more carton disks interfering with each other with strange
>shapes ??
>
>Hey , why not fix a ldr to your tv screen. I guess the horizontal
>frequency of about 16kHz will not be visible in the ldr current,
>because of ldr slowness. The 25Hz vertical blank will be seen.
>Perhaps one can filter that away.
>
>A nice source of incertainty...
>
>m.c.
>
>