Moderators: Dave Moll, Andrew Davie, Steve Anderson
DrZarkov wrote:I think anything that fits into an audio-channel. You can go a little bit lower, but then you reach a point where nothing is recognizable.
One I have not yet seen proposed would be a version of MAC, multiplexed analogue component, where 3 signals are time compressed to fit within a single NBTV line.
It would make sense for the channels to carry Y and two colour difference signals, with the Y signal occupying 0.5 of the NBTV line time, and the difference signals occupying 0.25 line time each.
Steve Anderson wrote:Stephen,
Yes, all understood. I'm not proposing this, but if our 'interest' were to be renamed I would suggest ACTV (Audio Circuit TeleVision). I think that fits in comfortably with most peoples' thinking.
It also allows non-mechanical systems to be included even though most are interested more in the mechanical side. However, one or two of my posts?
'Audio Circuit TV' sounds rather dry and uninteresting, doesn't it? It certainly would not appeal to the general public, some of whom might become interested if the title were improved.
Maybe mech TV should have one title and non mech another although that might be confusing.
Stephen wrote:With all the different schemes and proposals for NBTV, I am wondering what everyone thinks "narrow-bandwidth" TV really means in terms of bandwidth. When I think of alternate schemes that might provide higher resolution, frame rate or colour, I personally regard it as anything that fits in a high fidelity audio channel, say 20 kHz, but I can imagine that there may be a wide range of opinion on this.
The purists would select 10kHz. They'd also select 30 lines, and having the outermost lines more widely spread.
Rather than narrow-band television (which is really just a consequence of the technology available back then), I tend to think of what I'm interested in as 'Historical Television' which encompasses techniques, not bandwidth
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