| CES : Technical Guidelines for Dolby Stereo Theatres November 1994 Page 10 |
Dolby Tech Page |
Cat 64P
Pink Noise on color stock
Cat 69T
Dolby Tone on color stock
Cat 97
Left/right test film for solar cell alignment
Cat 151 and Cat 151B
The Cat. No. 151B is an optional alternative to the existing Cat. No. 151. Unlike the 151, the 151B utilizes band limited frequency pink noise on front and surround channels, making it easier to achieve timbre matching. Engineers may find this film easier to use in practice than the Cat. No. 151, though both films will be available for the time-being.
Cat 566
Lack of illumination uniformity along the slit is a major cause of distortion and inadequate high-level highfrequency response with analog soundtracks. Until now the only method of measuring uniformity was with a snake track, a difficult and cumbersome procedure. This new test film only requires use of a real-time analyzer, and provides an instant visual display of any illumination problems.
Cat 1010: Synchronization test film
Enables setting of sound delay to match picture sync with digital sound reader varying projector mounting locations. Contains digital "pip", analog "pip", picture sync mark, and frame/sprocket markers for visual verification.
Cat 1011: Channel Identification test film
Contains verbal identification for each main channel (Left, Centre, Right, Left Rear and Right Rear), and a low frequency tone for sub-woofer.
35mm picture test film, manufactured by the SMPTE. Used for checking focus, lens resolution and aspect ratios.[SMPTE RP105: Picture Jump and Weave]
This is an updated version of the well-known Jiffy test film, now containing both an SR sound-track, and a digital sound-track. There are six minutes of subjective audio tests in some cases different for the analog and digital sound-tracks. The test film also contains some quick visual tests, to verify framing and check for ghosting and shutter problems.
Dolby Stereo SR, 1.85:1 aspect ratio. A one minute helicopter journey across the Columbia Gorge with a stirring orchestral score written by Henry Manicini.
Dolby Stereo SR·D for use in Digital equipped theatres. A 60-second sound effect fanfare to introduce a Dolby Stereo digital feature.
The following manuals Dolby Laboratories:
8.1.1 CP55 (manual coming online soon)
8.1.2 CP65 (manual coming online soon)
8.1.3 CP200 (manual coming online soon)
8.1.4 SRA5 (manual coming online soon)
8.2.2 Light on Screen and Reflected/Ambient Light. SMPTE 196M-1993
SMPTE and ANSI documents can be ordered from:
SMPTE
595 West Hartsdale Ave.
White Plains, NY 10607(In the USA, the SMPTE can also provide ISO and IEC documents)
ISO documents can be ordered from:
ISO: Central Secretariat, Case Postale 56
CH-1211 Geneve
SwitzerlandIEC documents can be ordered from:
IEC: 3 Rue de Varembe, Case Postale 131
CH-1211 Geneve
Switzerland
Technical information on motion picture sound, and theatre sound systems and installation can be found in a wide variety of journals and magazines. The best known are:
SMPTE Journal:
Society of Motion Picture and Television Engineers (SMPTE)
545 West Hartsdale Ave. White Plains, NY 10607Film Journal:
244 West 49th Street, Suite 305,
New York, NY 10019Box-Office Magizine:
6640 Sunset Blvd., Suite 100 Hollywood,
CA 90028Image Technology (incorporating Cinema Technology):
British Kinematograph, Sound and Television Society (BKSTS),
547-549 Victoria House, Vernon Place
London WC1B 4DJ
EnglandJournal of the Audio Engineering Society:
AES
6O East 42nd Street, Room 2520
New York, NY 10165-2520
This committee meets irregularly, and has a membership from all aspects of the motion picture industry, producers, theatres, and equipment manufacturers. Discussions are of technical issues of current interest -- for example, the committee has been heavily involved in discussions relating to the adoption of 6000 feet shipping reels for motion picture distribution in the USA.
Contact:
John Mason
Eastman Kodak Company
6700 Santa Monica Boulevard
Hollywood, CA 90038
Tel.: 213-464-6131
The Theatre Equipment Association provides a forum for the interchange of information between equipment manufacturers and equipment dealers. The membership is largely from the USA, with increasing representation from overseas. The TEA also hosts an annual seminar series covering motion picture industry issues ranging from theatre sight lines to crowd control at the concession stands. Communication is by mail, and at an annual convention held each summer at a different location in the USA.
Contact:
The Theatre Equipment Association
244 West 49th Street, Suite 305
New York, NY 10019
THX is a division of LucasArts Ltd which publishes a set of criteria for theatre performance. They provide regular training courses for the measurement of theatre performance, and for the installation of THX loudspeaker systems.
Contact:
THX Division LucasArts Ltd.
PO Box 2009
San Rafael, CA 94914
Dolby Laboratories provides regular training courses for theatre equipment installers, theatre operations staff, and studio personnel. Course material contains specific information about theatre equipment installation, and much of the material discussed in these guidelines. The courses are held several times a year, in different locations in the USA, and in London.
Contact:
US Address:
Dolby Laboratories Marketing Department:
100 Potrero Avenue
San Francisco, CA 94103
Phone (415)558-0200
Fax (415)863-1373UK Address:
Wootton Bassett
Wiltshire SN4 8QT England
Phone 01-793-842100
Fax 01-793-&42101
In the USA, technical help is available:
Monday-Friday 8.00am - 5.30pm (Pacific Time) (415)558-0200 (Outside of business hours for theatre emergencies call: (415)554-8537Reference test films for measurement of illumination uniformity, scanning beam location and picture test films are available from several sources, including:SMPTE:
595 West Hartsdale Ave.
White Plains, NY 10607DEFA: OPTRONIK GMBH
August-Bebel-Strasse 26-53
D 14482 PotsdamTel: 49-331-965-2472
Fax: 49-331-965-2471
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