MOTM

> Reminder:
> 
> Pacific Northwest Synthesizer Meeting
> 
> Saturday, October 21, 2006
> 10:00 AM to 3:00 PM
> 
> Renton Technical College
> Building C, Room 110
> 3000 NE 4th St
> Renton, WA 98056
> 
> No charge. (Contribute for the Pizza)  Free.
> 
> There will be several more first time visitors this year. Please bring 
> synths that you have brought in the past. Don't forget power cords, patch 
> cords, adapters. I am planning on having a small Mackie mixer and powered 
> speaker for your use.
> 
> Performances are welcome.
> 
> Talks are welcome.
> 
> Lookers are welcome.
> 
> Good Lookers are welcome.
> 
> Jim Patchell will not be coming this year. A pending marriage takes 
> priority.
> 
> More information at www.sound-photo.com
> 
> Take care,
> John
> www.sound-photo.com
> www.antenna-farm.com
>

Pacific Northwest Synth Meeting
Saturday, October 25
10:00 AM to 3:00 PM

Renton Technical College
3000 NE 4th St
Renton, WA 98056
Room K-203/204

Note: This is a different room from previous years. Use entrance #3 on
Monroe Ave NE. The K Quad is directly opposite the entrance. Parking
will be better than previous years.

Another Note: John will be selling books from his too large library.

If you try to pass NTSC video signals through MOTM (or any other) audio 
processing modules, they will act as severe low pass filters.  Maximum 
bandwidth is maybe 100 Khz.   This is enough to pass vertical and 
horizontal sync signals (60 Hz and about 15Khz respectively), possibly 
intact enough for some monitors, but there won't be much picture 
resolution and probably no color.  You need 6 Mhz bandwidth for video.  
Other issues would be that video drivers expect a 75 ohm load (not 100K 
like MOTM inputs).  And the signal levels are 1 to 2 V p-p.  It's been a 
while since my video synthesis days.  Back then I built voltage 
controlled video processors, with CV inputs being compatible with MOTM, 
but signal paths designed for NTSC video with sync being stripped off 
and added back after processing.  I worked with David Jones.

http://www.audiovisualizers.com/toolshak/vidsynth/djones/djones.htm

http://www.paradise2012.com/visualMusic/vsynths.htm

Richard Brewster
http://www.pugix.com

Paul Bower wrote:

>>
>
> hello all,
> just wondering if anyone has had any success with video synthesis 
> using unmodified MOTM, CGS etc modules ?
> i vaguely remember a short thread along these lines a few years ago, 
> but can't seem to locate it
>
> so far i've managed to get something very interesting out of a Time 
> Machine (okay - feed some composite video in - get a Yuri Gagarin 
> style composite feed out)
>
> i kind of assumed that i might be able to get something out of some 
> modulated VCAs or maybe ring modulation, but so far no luck - though 
> maybe a lot of this is down to my choice of monitor.....?
>
> cheers
> paul
>
>
> *Paul Bower*
> *Un! Recordings*
>
> www.unrecordings.co.uk
> www.youtube.com/user/unrecordings
> www.myspace.com/unrecordings
> www.last.fm/label/Un%21/
>
>
>
>

Paul Bower,
>>just wondering if anyone has had any success with video synthesis using
unmodified MOTM, CGS etc modules ? i vaguely remember a short thread along
these lines a few years ago, but can't seem to locate it<<

Sound is one dimensional, video is two dimensional for one thing, so your
synth isn't going to understand vertical vs horizontal.  And as mentioned,
there are sync signals mixed in you don't want to mess with.  If I decide to
sell my expensive and great JVC BR-9000U timelapse VCR, then I'd also put up
for sale my JVC JX-C7 video corrector.  It's a little more along the lines
of what you would need to modify a video signal, such as changing the RGB
values and sharpening the image and such.  Not exactly video synthesis
though.

http://i127.photobucket.com/albums/p122/Elhardt/Ebay/JVC1.jpg
http://i127.photobucket.com/albums/p122/Elhardt/Ebay/JVC2.jpg
http://i127.photobucket.com/albums/p122/Elhardt/Ebay/JVC3.jpg

-Elhardt