Movies for TV - Early Television Foundation

98
FUNDAMENTALS
Fig. 4-3. Open view of Brenkert projector and RCA sound head
for 35 mm sound film with preview attachment (lower unit)
which permits operator to run separate sound track, synchronized
with picture film, for screening of "rushes" prior to com-
bining them on composite print.
film mechanism. The drum around which the film circulates to
iron out speed irregularities is combined with the sound head. The
distance from the picture gate to the sound head is twenty frames;
this provides sufficient leeway for the intermittent motion of the
film through the light gate to be smoothed out into constant speed
and prevent wow or flutter in the sound pitch due to varying
speed.
The lowest unit is an addition which,
as far as the author is
aware, has never been made to any television projector although