Posted by Gary Eickmeier on 11/18/05 02:12

Harry Kiri wrote:

> "Gary Eickmeier" <geickmei@tampabay.rr.com> wrote in message
> news:Lr1ff.8867$dT3.2867@tornado.tampabay.rr.com...
>
>
>>Anyone else experience this nonsense? The camera will record and
>
> play
>
>>back now, but I can't get ANY sound out of it if I put it in a
>
> standard
>
>>(i.e. new) Sony camera, especially at LP speed. It will play some of
>
> my
>
>>older tapes, recorded when new, at SP, but no LP.
>
>
> I wonder if LP problems arise because the capstan controller can't
> keep the speed within such tight (percentage) limits at LP at it does
> at SP? On the other hand, at LP the drum would have to rotate at a
> lower speed too, so the voltages induced in the heads should
> theoretically be significantly lower, (flux change/unit time reduces),
> and if the induced head voltages approached the "not permitted"
> voltage levels (in the threshold area between a 0 and a 1), then you
> would get a rubbish data stream off your tape that no amount of error
> correction will fix.
>
> Hypothesis and conjecture, of course. Needs someone with a bit more
> cam knowledge to contribute.

The greatest mystery is that thru all of this, the video tracked just
fine. Even tracks the LP tapes that have no sound. So how can we track
the video part of the scan and not the audio? It's all recorded in one
rev of the head drum, and it's all digital.

Gary Eickmeier

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