sound format
class of sound systems used in cinema and home theaters
surround sound
system with loudspeakers that surround the listener
Ultra Stereo
cinema sound system
Dolby Digital
Audio compression technologies
Cinema Digital Sound
multi-channel surround sound format used for theatrical films in the early 1990s
Sony Dynamic Digital Sound
cinema sound system
Dolby Digital EX
sound format by Dolby
Dolby Stereo Spectral Recording
Cinema sound system, a version of Dolby Stereo with added SR noise reduction
sound-on-film (optical)
storing sound recordings on film
DTS
series of multichannel audio technologies owned by DTS, Inc.
quadraphonic sound
sound that uses four channels in which speakers are positioned at the four corners of the listening space
Dolby Pro Logic
surround sound processing technology developed by Dolby Labs
Dolby Stereo
sound format by Dolby
sound-on-film (magnetic)
class of sound film processes
Perspecta
1950s movie sound system
stereo sound
method of sound reproduction using two audio channels