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CLAPSTICKS must be used to indicate the synchronous start of both sound and pic¬ ture on every take. On film the “start” is determined by locating frame where clapsticks come together; on the sound track, by the audible sound of the clap¬ sticks coming together. (Photo courtesy Ohio Wesleyan College.)
IN EDITING method described by author, the same machine used for recording must also be used to reproduce the sound when transferring from V4 -inch tape to sprocketed 16mm magnetic film. (Univ. of So. Calif, photo.)
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^he increasing interest in sound film production among 16mm film makers, using l/^-inch magnetic tape, has revealed need for more general information on basic sound recording procedures. This is evident in the number of letters regularly received by the Editor which pose questions on the subject — some of which are referred to this writer for the answers.
Typical is a recent letter from a reader who indicated he was preparing to undertake a 16mm sound film pro¬ duction using equipment that consisted of a spring motordriven Bolex H16 camera and a Berlant Concertone 2track stereo ^4-inch tape recorder having a sync motor.
“If I equip my Bolex with a sync motor,'1 he asked, “and the recorder has a sync motor, and both are fed from the same power source, use of a clapstick and slate should give me the necessary cue marks on picture film and sound tape. But where do I go from there? How do I edit the sound on tape with the picture film?"
On '/4-inch Tape . . .
HOW DO YOU
EDIT THE SOUND?
BY LOREN L. RYDER
Ryder Sound Services, Hollywood, Calif.
The Answer
If the Bolex H16 is driven with a synchronous motor and the Berlant recorder is also sync-motor driven, the sound and picture will be in approximate sync, which should be satisfactory for takes of from one-half minute to one and one-half minutes in length. In the filming and recording of such takes, clapsticks must be used to indi¬ cate the synchronous start on tape and film.
The same tape recorder should be used to reproduce the sound when transferring it from ^-inch tape to 16mm sprocket-driven magnetic tape. The original tape should be on the same feed reel as used during the take and, pref¬ erably, the same size take-up reel should be used. Sub¬ sequent to the transfer, the 16mm picture can be edited with the 16mm sprocket-driven magnetic film.
An alternate and better system is to record as before, using a sync motor on the camera and a sync motor on the recorder, but recording the audio on only one of the stereo tracks and the 60-cycle supply signal on the second
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AMERICAN CINEMATOGRAPHER, MARCH, 1963