Ed's AV Handbook.com
Home Theater & High Fidelity Stereo Audio
Batting practice for the audio/video pro and a primer for the novice
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Chap 2 AV Physics
Chap 3 Sound
Chap 4 Video
Chap 5 AV System Sequence
Chap 6 The Room, Speaker, & TV
Chap 7 Acoustical Strategy
Chap 8 Home Theater by Design
Chap 9 Sales Training
Chap 10 Business & Marketing
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Multi-Channel Audio Mini History
This page temporarily departs from the discussion of AV terms. It is included to add historical perspective to the next page - home theater surround sound formats.
1940 - Disney’s Fantasia was the first to movie employ multi-channel audio.
An eight-channel soundtrack was optically read from eight separate film reels and synced with the motion picture.
1952 - Cinerama Theaters in select major cities featured 7 channels of audio partnered with several projectors creating a panoramic 146 degree wide screen image.
1953 - 20th Century Fox unveiled The Robe in Cinemascope; an anamorphic
2.35:1 aspect ratio wide screen film with surround sound audio.
1970 - Music only quadraphonic four channel audio added an additional pair of rear speakers to the home stereo arrangement.
1975 - The movie Tommy introduced Dolby Surround, a more commercially viable multi-channel audio system in neighborhood theaters. It was followed by the Dolby debuts of Stars Wars & Close Encounters of a Third Kind.
1982 - The HiFi VCR escorted Dolby Surround home. It evolved into Dolby Pro Logic which closed the balance of the decade and the exclusive Dolby era.
thereafter DTS were established in neighborhood movie theaters.
1997 - DVD is released with Dolby Digital and DTS digital formats.
1999 - A revised Laser Disc adds DTS and Dolby Digital.
2007 - The introduction of the HD Blu-Ray disc introduced lossless Dolby Digital HD
and DTS HD Master Audio.
2014/15 - Dolby Atmos and DTS-X are released. Each offer a more immersive surround sound experience using additional 'above' channels and speakers.
|Ed's AV Handbook.com
Batting Practice for the AV Pro and a Primer for the Novice.
Copyright 2007 Txu1-598-288 Revised 2018