Re: [microsound] [ot] glitch and VHS

[e.g.+-ø <glere@xxxxxxxxx>]

Thank YOU!
I was looking for that info but still haven't find it on the net!
And do you know perhaps about artists that have used this?
ciao
e.g.ø

ps: are you the guy of either-1?

Ian Andrews wrote:

> VHS uses helical scan. The rotating heads write tracks in diagonal lines.
> Each track is a field.  1 frame = 2 fields = 2 tracks. These diagonal
> tracks run about 2 or 3 feet along the tape. This is why, when you get a
> vertical crease across the tape the error line will travel down the screen,
> as it goes through successive frames.  The time that it takes for a big
> glitch to travel from the top of the screen to the bottom is equal to the
> time it takes for the tape to travel around half (180 dgrees) of the head
> drum.
> 
> hope this helps.
> 
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