OPTIMOD SURROUND PROCESSOR INTRODUCTION
1-7
and 2.0 processing chains and work with the both Two-Band and Five-Band
structures. The third-generation improvements reduce annoyance more than
simple loudness control alone, doing so without audible gain pumping. At-
tack time is fast enough to prevent audible loudness overshoots, so the control is
smooth and unobtrusive. Material processed by the CBS Loudness Controller has
been shown to be well controlled when measured with a long-term loudness
meter using the BS.1770 standard. (See Using the ITU BS.1770 and CBS Loudness
Meters to Measure Loudness Controller Performance starting on page 3-78.)
• Orban’
s PreCode™ technology manipulates several aspects of the audio to
minimize artifacts caused by low bitrate codecs, ensuring consistent loudness
and texture from one source to the next. It is particularly useful when processing
for netcasts or mastering for any low bit rate channel.
PreCode includes special audio band detection algorithms that are energy and
spectrum aware. This can improve codec performance on some codecs by reduc-
ing audio processing induced codec artifacts, even with program material that
has been preprocessed or mastered by other processing than Optimod. There are
several factory presets tuned specifically for low bit-rate codecs.
User-Friendly Interface
• A large (quarter-VGA) color liquid crystal display (LCD) makes setup, adjust-
ment and programming of the 8500 easy. Navigation is by a miniature joystick,
two dedicated buttons, and a large rotary knob. The LCD shows all metering
functions of the processing structure in use.
• Use the Locate joystick to navigate through a menu that lets you recall a pre-
set, modify processing (at three levels of expertise), or to access the system’s
setup controls.
Controllable
• The 8685 can be remote-controlled by 5-12V pulses applied to eight pro-
grammable, optically isolated “general-purpose interface” (GPI) ports.
• 8685 PC Remote software is a smooth, responsive graphical application that
runs under Windows XP and Vista. It communicates with a given 8685 via TCP/IP
over modem, direct serial, and Ethernet connections. You can configure PC
Remote to switch between many 8685s via a convenient organizer that supports
giving any 8685 an alias and supports grouping multiple 8685s into folders.
Clicking an 8685’s icon causes PC Remote to connect to that 8685 through an
Ethernet network or initiates a Windows Dial-Up or Direct Cable Connection if
appropriate. The PC Remote software allows the user to access all 8685 features
and allows the user to archive and restore presets, automation lists, and system
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