Cinema digital sound

Cinema Digital Sound (CDS) is a digital sound recording system introduced in 1990 by Kodak and Optical Radiation Corporation . CDS is the first sound recording system in which all stages of sound recording and playback are digitized.

Like Dolby Digital, CDS has six separate audio channels based on the 5.1 scheme and two control tracks ; five sound tracks were independent of each other (left, center, right, surround left, surround right), the sixth (bass) channel was frequency-limited. For the compression is delta modulation used.

CDS sound could only be played in suitably equipped cinemas; the procedure is no longer used today. The current digital sound processes in cinemas are Dolby Digital (from 1992 ), DTS (from 1993 ) and SDDS (from 1993).

Films with CDS

• Days of Thunder (1990) - on 70mm film
• Dick Tracy (1990) - on 70mm film
• The Doors (1991)
• Edward Scissorhands (1990)
• Flight into the Dark (1991)
• Flatliners (1990)
• Days of Fame, Days of Love (1991)
• Hudson Hawk (1991)
• Terminator 2: Judgment Day (1991)
• Universal Soldier (1992)

See also

• Fantasound
• DTS Stereo and Ultra Stereo
• Cinerama
• Sensurround
• High Definition Film and Sound System (HDFS)
• Dolby
• THX and SONIX

Web links

• http://www.filmvorfuehrer.de/index.php/Geschichte_des_Filmtons - history of film sound
• http://www.multicinema.de/soundsysteme.html - sound systems in the cinema