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April 1956 Popular Electronics
 Table
of Contents
Wax nostalgic about and learn from the history of early electronics. See articles
from
Popular Electronics,
published October 1954 - April 1985. All copyrights are hereby acknowledged.
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Disneyland opened its gates in Anaheim, California on July 17,
1955. It was billed as the most high-tech theme park in the world, with a 'wow'
factor on par with the World's Fair extravaganzas. One of its much-ballyhooed features
was the "realistic" jungle safari tour with life-like animal automatons and authentic
3-D jungle sounds. This 1956 Popular Electronics magazine article, published less than a year after opening day, highlights
some of the equipment and methods used by artists and engineers to achieve the effects.
Of course the equipment and methods used today make this effort seem less than
amateurish.
Electronic Realism in Disneyland
Carousel uses 10 speakers around canopy for musical rides.
Sound effects liven scenic make-believe at mammoth park
Whether you want a rocket trip to the moon or a riverboat ride through the African
jungle, you can find it in Disneyland, the super dream-and-play area created by
the famous Walt Disney in Anaheim, California.
But more than a land of fun and fantasy, Disneyland has proven to be a vast laboratory
and workshop where engineers and technicians have let their imaginations run wild
in creating new equipment and startling visual and sound effects.
The sky was the limit in setting up Disneyland, and hundreds of specialists from
such companies as Altec Lansing, Ralke, Berger Electric, Graybar Electric, etc.,
combined their talents to create illusions of sight and sound.
One hundred and sixty acres of flat, sandy ground were transformed into an intricate
terrain of make-believe mountains, valleys, rivers, lakes, and forests. Artists,
architects, earth-movers, builders, studio technicians, and electronics men teamed
up to change a wasteland into the many little worlds that comprise Disneyland. These
include: Adventureland, Fantasyland, Frontierland, and Tomorrowland.
The sound installation, made by Altec, simulates the noises of dozens of beasts
and birds that inhabit the banks of the jungle rivers. Prerecorded tapes are the
storehouse of such sounds.
Cruising down jungle river, visitors see and hear warlike savages,
drum-beats, wild-animal cries.
Close-ups reveal behind-the-scenes Altec Lansing speakers.
In the Adventureland control room, trumpeting elephants, roaring lions and rhinos,
chattering monkeys - as well as the beating of native drums - originate from a bank
of tape players. These machines play continuously a tape of any desired sound, repeating
it at 10-second intervals. Operating in this manner, the tape machines repeat their
messages 4320 times daily.
Camouflaged to resemble huge mushroom growths in foliage.
Maze of equipment and wiring is electronic heart of Disneyland.
Technician Jim Hervey adjusts tape system that is sound source for all audio effects
heard throughout 160 acres of play area.
Finding the sounds to go on these tapes was a job in itself. It required months
of searching through the sound track morgues of movie studios, broadcast stations,
and universities.
Seventy-four separate loudspeaker systems, each carefully camouflaged beside
animals and in the trees, reproduce the sounds. Six miles of cable connect these
speakers to power amplifiers.
One difficult problem encountered was how to move the sound of birds that were
supposed to be flying from one spot to another. Complete realism was required; the
system had to do the job without the customary relay clicking and time delay switching.
Invented solely for this task was a unique unit dubbed a "rotation audio fader."
This device transfers the bird calls from one set of speakers to another so neatly
that visitors to Adventureland swear they actually see the non-existent birds flying
in the dense foliage.
All other sounds in Disneyland blend into their surroundings so well that it
is impossible to identify them as being artificially produced. The myriad of voices,
music, and background sound is so vital to the operation and success of Disneyland
that a full-time sound crew has been hired to stand by constantly to service the
equipment. - John A. Norman.
Posted February 25, 2022
(updated from original post on 9/1/2015)
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