Educational screen & audio-visual guide (c1956-1971])

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0 ^^^^^mj^l U. in !'««« Projectors used in llic language laboratory at Santa Barbara City College are normally mounted on carts high enough to clear the 18-inch booth partitions. Some of the partitions have been folded to illustrate the flexible booth design. A portion of the laboratory — seven booths — has been enclosed in a separate room (beyond the wall on the left) for use by small groups. Heavy cloth draperies and sliding glass windows open or close this room to the main part of the lab. Flexible Design For Language Labs by J. Roy Barron I> N designing the language laboratoiy installation at Santa Barbara (California) City College every effort was made to postpone obsolescence. Booths, lay-out and equipment are arranged to facilitate a wide variety of application as techniques of utilization are developed over the years. Dependable, high quality equipment of the latest design was acquired to delay need for replacement. More and more visual materials are being produced to convey understanding of scenes or situations while they are being described by accompanying foreign language narration. Anticipating increased emphasis on this method, it was decided to specify projection equipment adaptable for use with a variety of materials. A special effort was made to select a 16mm motion IMcture projector which could be converted easily from the standard optical sound system to magnetic sound so that teachers could make their own foreign language sound tracks to accompany films produced with English or other language tracks. This feature will also permit applying sound tracks to silent travel films made by teachers and local citizens during their trips abroad. Projection equipment specified for a language laboratory installation should be very quiet in operation with top quality audio performance. A remote control filmstrip projector was chosen on the basis of adaptability to both high and low frequency signal operation. Electronic equipment for master lesson sources features "audio-active" earphones with monitoring, intercommunication and recording from a master console. Student amplifiers and the console use transistors and printed circuits. Additional flexibility is gained by using portable (rather than rack mounted) tape recorders. These serve as master lesson sources for student recording at any single booth as needed and for recording of students at the console. A unique feature is the booth design. Solid oak and formica tables were provided by the manufacturer of the "plug-in" laboratory equipment. These were delivered with openings cut in the front apron to receive duplex power outlets and student amplifiers. Folding, gate type, partitions were installed on the tables so that the sides may be folded to the front and the front-side unit folded down to form a clear table surface. Only the microphone remains on the table top when partitions are folded. Teachers find this arrangement to be very desirable for regular class sessions. Even with the added advantage of conversion to a clear table top, the cost per student position was about one-half the cost of standard booth construction. Funds saved in the fiuTiiture design were available to apply toward purchase of top quality electronic and projection equipment. Educational Screen and Audiovisual Guide — April, 1961 175