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History of Surround Sound
Transcript of History of Surround Sound
1960s thru 1975
Bell Labs 3-channel stereophonic system
“Auditory Perspectives” experiments
Disney “Fantasound” (developed for ‘Fantasia’)
1st of 8 variations used 3 front channels and 2 rear)
Multitrack recording, pan potting, overdubbing invented
Post-war technology boom
Strong permanent magnets
Magnetic tape, unrestricted materials use
4-track magnetic prints
70mm 6-track specialty prints
Matrix surround systems (phase/amplitude or carrier based)
ATSC "3.0" anticipated for 2016
Beyond 7.1 ~ Height!
9.1 / 10.2 / 14.2
SRS Labs "MDA"
MPEG | H
Pixar's "Brave" 1st film to release in ATMOS format
Ambisonics revitalized (format agnostic recording)
Surround ~ 80 years to an "overnight success"!
Edge of 35mm film print
Angles and Limits for all current
Atmos and Auro3D
Dolby Stereo released (commenced Dolby Film Program)
Amplitude/Phase matrix (borrowed from Quad) allowed 4 channels worth of information to be stored in the 2-track optical space on release prints
1st release: “Lisztomania”
Star Wars, Close Encounters
Star Wars - 1st multichannel film to win Oscar
Revitalization of 70mm 6-track format:
Advent of “Baby Boom” channel
Close Encounters (70mm version) 1st film to use dedicated Subwoofer channel
1st film to utilize “split” surrounds
1st film to use the equivalent of modern 5.1
(L, C, R, LS, RS, Lfe)
Dolby Surround released (Consumer ‘Stereo’ decode: Surround Channel)
THX TAP released
Dolby AC-1 released
SMPTE codifies 5.1 for digital sound on film
1st Superbowl (XXI) broadcast in Surround
Home theatre revolution begins
Dolby ProLogic emerges (Consumer decoding of ‘Centre’ added to “Surround”)
Dolby AC-2 released
Alan Blumlein invents the Stereo Variable Area soundtrack
Why did it fail?
3 competing formats
Required very tight tolerances in consumer equipment
Different artistic outlooks and consumer reluctance
Dolby AC-3 (Dolby Digital) released
Dolby SR*D (optical AC-3) released
DTS and SDDS theatrical formats released
1st consumer AC-3 decoders available
“Speed” is 18th consecutive Dolby film to wins Oscar
1st 5.1 (AC-3) broadcast
WBNS-DT Columbus Ohio, College Football
Dolby Surround EX released
“Star Wars: The Phantom Menace”
Dolby E released
ProLogic II released
1st regular drama series broadcast in 5.1 (NYPD Blue, ABC)
Dolby Digital Plus released
Select events from Athens Olympic Games broadcast in 5.1
ProLogic, ProLogic II, ProLogic Iix for decode
Dolby Digital (AC-3)
Flexible from 1 to 6 channels
Dolby Digital Plus
Expands AC-3 to include 7.1 plus Object
Mezzanine compression for Production/Contribution
Dolby ED2 & AC-4 (pending)
It's a Dolby World...