LESSON 3
OPERATE TURNTABLES AND AUDIO
TAPE RECORDER/REPRODUCER
TASK
Describe the methods for operation of turntables and audiotape recorder/reproducers.
CONDITIONS
Given information about recorded sound, turntables, and audio recorders (reel-to-reel, audiotape
cartridges, and cassette units).
STANDARDS
Demonstrate competency of the task skills and knowledge by responding to the multiple-choice test
covering operation of turntables and audiotape recorder/reproducers.
REFERENCES
None
Learning Event 1:
USE AUDIO TURNTABLES
1.
Recorded sound is used in television and motion picture operations in a great variety of ways.
Background music for films or video productions, live performances, and recorded sound effects are the
most commonly used recorded sound. Recorded sound can be reproduced from live sources: (1)
records, (2) electrical transcriptions (records intended for broadcast use only), (3) audiotape, (4)
videotape, and (5) film. Records and audiotape are only indirectly coupled with the picture portion: that
is, they are not mechanically synchronized with the picture. The audio portion of videotape and film is
directly recorded on these media. The sound is thus mechanically synchronized with the picture.
Records are still the most frequently used prerecorded sound in both television and motion picture
operations. For short segments, the standard records are being replaced with the more efficient
cartridge-tape operations. However, we can safely assume that standard records will be used for
sometime to come and that audio control rooms will still have to be equipped with turntables.
2.
Turntables have provisions to play all speeds - 78, 45, 33 1/3 rpm (revolutions per minute), and
all record sizes - 6 1/2, 7, 10, 12 and 16 inches in diameter. A special attachment built into the turntable
is necessary for the
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