1-4
INTRODUCTION
ORBAN MODEL 8300
system introduces peak overshoots into the 8300-processed signal. Because this
limiter closes a feedback loop around the audio processing, it allows the user
to
adjust the processor’s subjective setup controls
freely
without violating
BS412 limits, regardless of program material. The multiplex power limiter acts on
all outputs (not just the composite output). It reduces clipper drive when it re-
duces power, simultaneously reducing clipping distortion.
All input, output, and power connections are
rigorously RFI-suppressed
to
Orban’s traditional exacting standards, ensuring trouble-free installation.
The 8300 is designed and certified to
meet all applicable international
safety and emissions standards
.
Adaptability through Multiple Audio Processing Structures
A
processing structure
is a program that operates as a complete audio proc-
essing system. Only one processing structure can be on-air at a time. OPTIMOD-
FM realizes its processing structures as a series of high-speed mathematical com-
putations made by Digital Signal Processing (DSP) chips.
The 8300 features three processing structures:
Optimum
Five-Band
(or “Multi-
band”; 15 or 20 ms delay) for a consistent, “processed” sound, free from unde-
sirable side effects,
Ultra-Low-Latency Five-Band
(5 ms delay) for environ-
ments where talent monitors live off-air and they object to the delay of Opti-
mum Five-Band, and
Two-Band
for a transparent sound that preserves the fre-
quency balance of the original program material. A special Two-Band preset cre-
ates a no-compromise “Protect” function that is functionally similar to the “
Pro-
tect
” structures in earlier Orban digital processors. The Optimum Five-Band and
the Two-Band structures can be switched via a mute-free crossfade; the Low La-
tency Five-Band structure causes a very brief audio mute when activated.
The 8300
can increase
the density and loudness
of the program material by
multiband compression, limiting, and clipping. This improves the consistency of
the station’s sound and increasing loudness and definition remarkably, without
producing unpleasant side effects.
The 8300
rides
gain
over an adjustable range of up to 25 dB, compressing dy-
namic range and compensating for both operator gain-riding errors and gain in-
consistencies in automated systems.
The 8300’s Two-Band processing structure is
phase-linear
to maximize audible
transparency.
The 8300 can
import and run any 8400 or 8500 user preset
via the 8300 PC
Remote application. (Certain 8400 and 8500 features are not available and will
be reinterpreted.) See
To Import Archived 8400 and 8500 Presets into Your 8300
on page
3-
70 for details.)
Summary of Contents for 8300J
Page 1: ...Operating Manual OPTIMOD FM 8300 Digital Audio Processor Version 2 1 Software...
Page 7: ...Operating Manual OPTIMOD FM 8300 Digital Audio Processor Version 2 1 Software...
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Page 247: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 29...
Page 254: ...6 36 TECHNICAL DATA ORBAN MODEL 8300 CPU Module...
Page 260: ...6 42 TECHNICAL DATA ORBAN MODEL 8300 8300 RS232 BOARD PARTS LOCATOR...
Page 262: ...6 44 TECHNICAL DATA ORBAN MODEL 8300 8300 POWER SUPPLY PARTS LOCATOR...
Page 264: ...6 46 TECHNICAL DATA ORBAN MODEL 8300 8300 I O BOARD PARTS LOCATOR...
Page 270: ...6 52 TECHNICAL DATA ORBAN MODEL 8300 DSP BOARD PARTS LOCATOR DRAWING 32170 000 14...
Page 278: ...6 60 TECHNICAL DATA ORBAN MODEL 8300 8300 DISPLAY BOARD PARTS LOCATOR...
Page 279: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 61 DISPLAY BOARD...