DTS MIXING
- Digital Theater Systems is a world leader in providing digital audio for motion pictures. This guide provides background information and helpful tips for producing printmasters that take advantage of the sonic performance possible with DTS.
- Six digital audio channels in a 5.1 format (i.e., left, center, right, left surround, right surround and
subwoofer) are recorded on to a CD-ROM. A simple, robust, and easy to read time code track is
simultaneously recorded on to the optical negative as the standard stereo optical sound track is
exposed. This 5 mil (0.005 inch/127 microns) wide track is printed on a safe, non-contact area of
the film, inside the normal SMPTE specified soundtrack exposure aperture. This location is not
used for picture or audio.
- A miniature reader, smaller than a person’s fist, is mounted on to the projector, between the feed
arm and the projection head. The reader is not sprocket driven, does not increase the load on the
projector motor, and has a long life L.E.D. light source. A prewired cable connects the reader to
the main electronic package of the system. Power for the reader is supplied from the main
electronics. Logic and audio signal switching relays control the selection of the DTS digital
audio track or the backup analog track.
- The film is threaded through the reader and the rest of the normal film path. When the reader
begins reading time code, the audio from the CD-ROM will play synchronously with the picture,
the audio becomes a slave to the projector, and consequently, the audio editing will match any
physical edit of the film.
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