Vaudeville
[1870~1920]
Traveling variety acts
performed in local
theaters
[1870~1920]
Traveling variety acts
performed in local
theaters
[1920~Present]
The Jazz Singer [1927]
was the first fully
developed talkie.
Vitaphone
[1926]
Sound on Disc: [~1913]
A “Follower” system
using a mechanical
interlocks to keep the
projector synchronized
with the record. Warner
Bros. used the Vitaphone
THX
THX is
a certification
which assures quality
between different
theaters.
Cinerama
[1952-1962]
L|LC|C|RC|R|3S.
Interlocked magnetic film
“follower system”.
Dolby Digital
5.1
encoded between the
sprockets.
SDDS
7.1(like
Cinerama) encoded
along the edges.
DTS
5.1 played from an
interlocked disc (like
Vitaphone).
Center Speaker
dialogue and on-screen action
Left/Right
Music and
directional effects.
Left/Right Surround
Reverb, surround SFX,
directional SFX, and low
level music.
Low Frequency
Extension:
Bass Rumble