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1954-55 Theatre Catalog, 12th Edition, Page 273 (237)

1954-55 Theatre Catalog, 12th Edition
1954-55 Theatre Catalog
1954-55 Theatre Catalog, 12th Edition, Page 273
Page 273


1954-55 Theatre Catalog, 12th Edition, Page 273

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jected through an expander lens working in the ratio of 11/21, which gives a screen image in a 2:1 aspect ratio.

At the present time there are three types of anamorphic lenses being manufactured. They are the cylindrical lens type, such as used by CinemaScope; the reflector lens type; and the prismatic type. 01' these three types of lenses, the prismatic type is the only one that can be made variable. The variable prismatic expander lens, has the capability of projecting in any ratio of squeeze, from a ratio of 1:1 to 3:1. In the 1:1 position these lenses will project standard prints either of the old standard type or the VistaVision standard type. Thus, the variable prismatic expander lens provides complete iiexibility in the projection booth for the exhibition of any print.

Theatre Sound

As stated before, all VistaVision release prints, both standard and squeezed, will have a single photographic sound track located in the standard position, so that they will reproduce on any standard optical sound head in any projector throughout the world. The sound track will also carry low frequency modulated control signals which will control the direction of sound reproduction in theatres that are equipped for directional or stereophonic sound.

Perspecta Sound will expand music to multiple loudspeakers and control the direction of the sound source when, and as it is required for dramatic effectiveness. Paramount suggests this type of sound for those exhibitors who desire multi-horn reproduction, and who wish to fill the theatre with sound. The decision as to its use rests with the exhibitor.

For VistaVision stereophonic sound it is only necessary to have three loudspeakers, as shown by A, B and C, in Figure 4, In very wide theatres and very large theatres, the addition of auditorium speakers at D and E may improve the sound effectiveness. These auditorium loudspeakers, if used, should be located well to the front of the auditorium. Loudspeaker D should be connected to the same electrical circuit as loudspeaker A, but operated at a lower



ONE OF the first cameras to be adapted to the VV process (above). The Paramount recommended system for directional sound is at (right).

1954-55 THEATRE CATALOG

level, and loudspeaker E should be connected to the same electrical circuit as loudspeaker C, and also operated at a lower level.

The control units for Perspecta Sound will be available from Westrex, Fairchild, Altec-Lansing, and other manufacturers. The theatre service companies will have complete instructions, in regard to their installation and operation.

Paramount will have no magnetic sound release. It is our opinion that this move will give greater simplicity and flexibility at a lower cost. The sound control units will have an automatic return to monaural sound in case of trouble.

Booth Operation

Booth operation is simplified to the bare essentials in all theatres that use the VistaVision standard prints and monaural sound. VistaVision also otters the simplest and most flexible system for those theatres that wish to play

squeezed prints through variable prismatic expander lenses. VistaVision, with its directional sound, simplifies operation in theatres equipped with multispeaker reproduction.

Drive-In Presentation

Drive-ins can use the VistaVision standard release prints and project them in the same manner as any standard release print. The improved quality of the VistaVision print should be very apparent in the outdoor theatres.

It seems to the writer that drivedns can best be served by using a screen in the ratio of 2:1, and using the squeezed prints along with variable prismatic expander lenses, working at the expansion ratio of 1%:1, as established for the VistaVision prints.

As stated previously, standard sound is available on all VistaVision release prints so that no change will be required in handling VistaVision sound for drivedns.



FIG.4

PREFERRED SYSTEM WITH SIDE SPEAKERS JUST BEYOND SIDE LINES OF PICTURE

LEFT SCREEN SPEAKER @ \



I

C ENTER SCREEN' SPEAKER

RIGHT \ AA {Q SCREEN SPEAKER PICTURE WIDTH I l I ' ,



RIGHT AUD. SPEAKER
1954-55 Theatre Catalog, 12th Edition, Page 273