Studio Technologies Gen II - Manual (Page 3)

Generation II User Guide Issue 3, July 1991
Studio Technologies, Inc. Page 5
Introduction
General Description
The Studio Technologies Generation II
Stereo Simulator is designed to create a
simulated stereo signal from a monaural
input. It is intended for use in applications
such as television and radio broadcasting,
film production, and audio restoration.
Specialized circuitry converts the incoming
signal into a time-domain randomized audio
field which provides an excellent stereo
“feel.”
In television applications, the Generation II
is appropriate for both on-air and production
use. The MTS television broadcaster is
faced with the reality of having a large
amount of mono audio material to broad-
cast. Using the Generation II Stereo Simula-
tor can greatly improve the listener’s
appreciation of “stereo” TV. The output is
mono-compatible, ensuring that monaural
(L+R) listeners are not negatively impacted
by the use of the Generation II.
In film and video production use, the Gen-
eration II is invaluable in converting mono
audio into realistic stereo. The two modes of
operation, music and music & voice, allow
for correct processing in all audio scenarios.
In the music & voice mode, a specialized
filter is used to give greater simulation to all
frequencies except those in the voice band.
This ensures that excellent voice centering
is maintained.
In some cases, it is desirable to disable the
front panel controls. An authorized person
may want to optimize the “sound” of the
Generation II, and then restrict the changing
of those settings. A 3-position switch, lo-
cated inside the unit, allows the operating
status to be set. In the fixed—music setting,
the music mode is activated, the front panel
controls are disabled, and the stereo inten-
sity trim potentiometer is active. In the
fixed—music & voice setting, the music &
voice mode is activated, the front panel
controls are disabled, and the stereo inten-
sity trim pot is active.
Careful circuit design provides excellent
audio performance and operational charac-
teristics to match the special requirements
of most facilities. The line input stage is
electronically balanced, maintaining excel-
lent common-mode rejection, low noise,
and low distortion. The audio output stages
use advanced circuitry to provide high
output level, low noise, and low distortion.
Two switches allow the input and output
levels to be set for nominal 0, +4, or +8dBu
operation. Two 3-section LED meters, along
with a meter select switch, provide monitor-
ing of the input and output levels.
Installation
Overview
In this section you will:
• Remove the top and, if required, the
bottom cover
• If required, install an input load resistor
• Set the input, output, and system status
switches
• Replace the cover(s)
• Mount the Generation II
• Connect the audio signals
• Connect power
• Adjust the input level