Orban OPTIMOD-PC 1100, Руководство по эксплуатации

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INTRODUCTION ORBAN MODEL 1100
The audio driver’s efficiency has been improved, meaning that audio clicks are much
less likely to occur through OPTIMOD-PC’s WAVE inputs and outputs when the com-
puter’s PCI bus is heavily loaded.
These changes between Version 1 and Version 2 mean that it is not possible to im-
port user presets created under version 1 . If you have existing user presets that you
rely on, you may not wish to upgrade to version 2. However, we expect that any ver-
sion 1 user preset can be improved if it is reworked using version 2’s new features
and algorithms.
Audio Processing for Level Control
Audio Processing: Making Broadcasts/Netcasts Sound Professional
Professional radio broadcasters would never consider going on the air without audio
signal processing. They consider it a vital aspect of their program content. This care-
fully crafted content is what holds listeners and keeps them coming back. Since
1975, Optimod algorithms have dominated the world market for professional radio
and television audio processing and have been improved continuously since then.
OPTIMOD-PC V2 puts this technology inside your computer.
For optimum sound, loudness, and peak control, you should digitally preprocess an
Internet audio signal to condition it prior to encoding. The appropriate preprocess-
ing has much in common with the preprocessing required for DAB, HD Radio™, CD
mastering, or digital satellite.
OPTIMOD-PC audio processing is appropriate for all of these and for any other digi-
tal transmission media and channels. OPTIMOD-PC’s three on-board Motorola
DSP56362 DSP chips provide a loud, consistent sound to the consumer by performing
automatic gain control (AGC), equalization, multiband gain control, and peak-level
control.
There are many gain/peak control devices and software available to perform dynam-
ics processing. Many of these tools are designed for recording studio applications as
effects compressors/limiters for individual microphone or instrument tracks. These
devices’ controls need to be tuned carefully for the specific material being proc-
essed—they are not “set and forget” processors. Moreover, most do not process
mixed program material without introducing objectionable audible artifacts, par-
ticularly when called upon to gain-ride input material having widely varying levels.
A broadcast audio processor should ideally be “seen, but not heard.” Optimod proc-
essing algorithms simultaneously control audio gain and peaks, artistically, musically,
and naturally, to give the illusion that processing is not taking place. Moreover, Op-
timod algorithms intelligently adapt themselves to the input program material.
Once OPTIMOD-PC is tuned for the sound texture required for the broadcast or net-
cast format (which is made easy by OPTIMOD-PC’s many format-specific presets), it
will provide excellent consistency regardless of the level or texture of the original
program material. OPTIMOD-PC’s automatic gain control and equalization achieve a
consistent sound, while accurate peak control maximizes loudness. Booming bass is
tightened; weak, thin bass is brought up; highs are always present and consistent in
level.