Re: VOC output to AV Mac: Excellent!!!

[dempson@atlantis.actrix.gen.nz (David Empson)]

In article <nugundamDp9Bvn.8Fz@netcom.com>,
Joseph Lee <nugundam@netcom.com> wrote:
> FermiLevel (fermilevel@aol.com) wrote:
> : almost like the IIGS monitor!  Big question:  why is the NTSC composite
> : output on the VOC so much better than the IIGS???
> 
> The VOC has chromo-crosstalk filters that clean up the NTSC signal out
> which the GS doesn't. 

That sounds like the most likely explanation.

> Also I think the GS outputs composite (which has audio mixed in,
> degrading video bandwidth) which the VOC doesn't do. 

Definitely not.  The IIgs video output is the composite video signal
(the term "composite" here refers to the composite vertical and
horizontal sync which is included with the video information).  The
IIgs video connector does provide the sound out a separate pin, which
the VOC is not likely to do.

To include the sound with the video, the computer would have to output
a radio frequency signal, which has the composite video signal on a
VHF or UHF carrier frequency, with the sound in a nearby frequency
band.
-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand