OPTIMOD 6300
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Lebih Lengkap Mengenai OPTIMOD 6300
The Orban 6300 is a high-quality,
multipurpose stereo audio processor for digital radio, digital
television, netcasts, STL protection, satellite uplink protection, and
digital mastering. Orban's all-digital Optimod 6300 Audio Processor can
help you achieve the highest possible quality digital audio broadcast,
digital television, and netcast audio processing. Thanks to versatile
signal routing, the 6300 can also serve as a studio AGC with an
all-digital signal path, and simultaneously as a talent headphone
processor. Because all processing is performed by high-speed
mathematical calculations within digital signal processing (DSP) chips,
the processing has cleanliness, quality, and stability over time and
temperature that is unmatched by analog processors.
OPTIMOD 6300
is descended from the industry-standard OPTIMOD audio processors for
radio and television. Thousands of these broadcast-specific processors
are attracting and holding audiences all over the world. They have
proven that the "OPTIMOD sound" can attract and keep an audience even in
the most competitive commercial environment.
The 6300 includes
third-generation CBS Loudness Controllers™ for DTV appliations. Loudness
controllers 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. Attack 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 ITU-R BS.1770-2 standard. The 6300
also includes a "BS.1770 Safety Limiter" that follows the CBS Loudness
Controller; use the BS.1770 if the BS.1770-2 meter reading must be
constrained to a preset value.
The 6300 also implements "true
peak" control by oversampling the peak limiter's sidechain at 192 kHz.
This allows the 6300 to prevent clipping in a playback device's analog
signal path by predicting and controlling the analog peak level
following the playback device's reconstruction filter to an accuracy of
better than 0.5 dB. For typical program material, accuracy is 0.2 dB!
Without true peak control, analog clipping can occur even if all peak
values of the digital samples are below 0 dBFS. This phenomenon has also
been termed "0 dBFS+."
Thanks to true peak control, sample rate
conversion, unless it removes high frequency program energy or
introduces group delay distortion, cannot cause sample peaks to increase
more than 0.5 dB. For example, sample rate conversion from 48 kHz to
44.1 kHz is highly unlikely to cause sample peak clipping in the 44.1
kHz audio data.
The 6300 includes analog and dual AES3 digital
inputs and outputs. The digital input and digital outputs have
sample-rate converters and can operate at 32 kHz, 44.1 kHz, 48, 88.2,
and 96 kHz sample rates. The pre-emphasis status and output levels are
separately adjustable for the analog and digital outputs.
OPTIMOD
6300's outputs can be independently configured to emit the output of
the AGC or the output of the multiband compressor/limiter, all
configurable to use or bypass look-ahead limiting. So a 6300 can be
configured to drive an STL with a peak-limited output from the AGC while
also providing a fully processed digital radio/netcast feed and a low
delay, multiband compressed talent headphone feed.
The 6300
features two processing structures: 5-band for a spectrally consistent
sound with good loudness control, and 2-band for a transparent sound
that preserves the frequency balance of the original program material
while also effectively controlling subjective loudness. There are over
60 Factory Presets wich are our "factory recommended settings" for
various program formats or types. There are multiple Factory Presets for
both radio-oriented and video oriented programming.
Orban's new
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. There are several factory
presets tuned specifically for low bitrate codecs.
The 6300 can
be remote-controlled by 5-12V pulses applied to eight programmable,
optically isolated "general-purpose interface" (GPI) ports. Moreover,
because the 6300 supports presets that be recalled by remote control, it
can be automatically synchronized to the presets on-air at a
transmitter side Optimod when presets are dayparted. The 6300's software
can be upgraded by running Orban-supplied downloadable upgrade software
on a PC.
Features:
Analog Audio Input
-Configuration: Stereo / Dual-Mono.
-Impedance: >10kΩ load impedance, electronically balanced.
-Nominal Input Level: Software adjustable from -4.0 to +13.0 dBu (VU).
-Maximum Input Level: +27 dBu.
-Connectors: Two
XLR-type, female, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3
electronically balanced, floating and symmetrical.
-A/D Conversion: 24 bit 128x oversampled delta sigma converter with linear-phase anti-aliasing filter.
-Filtering: RFI filtered, with high-pass filter at 0.15 Hz (-3 dB).
Analog Audio Input
-Configuration: Stereo / Dual-Mono.
-Source Impedance: 50Ω, electronically balanced and floating.
-Load Impedance: 600Ω or greater, balanced or unbalanced. Termination not required or recommended.
-Output Level (100% peak modulation): Adjustable from -6 dBu to +24 dBu peak, into 600Ω or greater load, software-adjustable.
-Signal-to-Noise: >= 90 dB unweighted (Bypass mode, de-emphasized, 20 Hz-15 kHz bandwidth, referenced to 100% modulation).
-L/R Crosstalk: <= -70 dB, 20 Hz-15 kHz.
-Distortion: <= 0.01% THD (Bypass mode, de-emphasized) 20 Hz-15 kHz bandwidth.
-Connectors: Two
XLR-type, male, EMI-suppressed. Pin 1 chassis ground, Pins 2 (+) and 3
electronically balanced, floating and symmetrical.
-D/A Conversion: 24 bit 128x oversampled.
-Filtering: RFI filtered.