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Ever-lasting credit must be given the true cine' amateur. If new ideas are rumored, and the manufacturers do not move as fast as some think they should, the cine' bug does something about it on his own. Magnetic sound film is on its way, but just when recording heads on cameras and reproducing units for projectors will become available is not yet known. Here is one amateur's solution to the problem. — Ed.
READY FOR A "TAKE" WITH SHOESTRING PRODUCTIONS
for this is a puck, the rubber tired wheel which is used to drive the turntable in most record players. They are available at radio supply stores and may be purchased mounted on a bracket. The bracket should be bolted to the recorder in such a position that the puck can be held tightly against the drive mechanism by a spring.
Another problem to overcome is that of adjusting the speed of the recorder. Most amateur tape recorders record at a speed of 37 V? feet per • See "LIP SYNC" on Page 474
*J$p Sync' for c4mateur£
By AlSri\ H . McKIV \ E Y
AFTER having been frustrated for many years by the lack of an adequate and inexpensive method of producing home movies with lip synchronized sound, I was finally relieved of this vexing problem by the introduction of magnetic tape recording. The similarity between magnetic recording tape and motion picture film makes this new medium readily adaptable to motion picture sound recording. However, ordinary i^-inch recording tape has proved to be less satisfactory for this puropse than the larger 16mm. perforated magnetic recording film (a relatively new recording
Projector and recorder in sync
medium which consists of a 16mm perforated safety base with a magnetic coating like that used on J/4 -inch tape).
There are two advantages of perforated magnetic recording film over V4-inch tape. First, there is less variation in the length of magnetic film due to changes in humidity, and second, the perforations of the magnetic film offer a positive means of synchronization.
The first step in this new project of "wiring for sound" is to adapt the recorder for use with magnetic film. This is accomplished by widening the guides which guide the tape over the recording heads so that the recording can be made down the center of the magnetic film. Or better still, build new guides which will allow the recording film to by-pass the tape guides so that the recorder will still carry 14 -inch tape. Plastic will probably be the best material for this purpose. If the heavier magnetic film slips over the drive mechanism it will be necessary to add a "pinch' 'wheel to hold the recording film tight. A good wheel
LEGEND FOR DIAGRAMS
1. Film tension roller
2. Spring
3. Electrical contact switch Recorder take-up reel Sprockets Guide rollers
Action film from projector
8. Action film to projector
9. Earphones
10. Spring
1 1 . Panel bearing
12. Insulator
1 3. Flexible wire
14. Panel bearing shaft
15. Earphone contact switch
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