AES Store

Journal Forum

Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
10 comments

Reflecting on Reflections - June 2014
1 comment

Quiet Thoughts on a Deafening Problem - May 2014
1 comment

Access Journal Forum

AES E-Library

Coincident Sound for Home Movies Provided by Tape Recorders

When taped sound must accompany the showing of a motion picture, problems of synchronization arise. This paper describes a simple, widely applicable regulator system for recording such sound, in which a high degree of synchronization is assured. As the film is run through the projector, the accompanying sound is taped on a half-track tape recorder. An auxiliary head simultaneously records a 60 cps tone derived from the projector power source upon the adjoining track. In playback, this tone, suitably amplified, drives a small auxiliary synchronous motor which, by appropriate gearing, controls the projector speed. Errors which may arise from stretched tape, tape creep, and line frequency variations are thus eliminated. Details of a typical system are presented, together with a description of the modifications which must be made on the tape recorder and the film projector.

Author:
Affiliation:
JAES Volume 5 Issue 1 pp. 36-41; January 1957
Publication Date:

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location:

Start a discussion about this paper!


 
Facebook   Twitter   LinkedIn   Google+   YouTube   RSS News Feeds  
AES - Audio Engineering Society