Controllable - Orban OPTIMOD 6300 Operating Manual

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INTRODUCTION

Controllable


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 ef-
fectively controlling subjective loudness.

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. PreCode includes special audio band
detection algorithms that are energy and spectrum aware. This can improve co-
dec performance on some codecs by reducing 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 spe-
cifically for low bitrate codecs. These presets have "LBR" in their names.

A special 2-band preset creates a no-compromise "Protect" function that is func-
tionally similar to the "Protect" structures in earlier Orban digital processors.
The 5-band and the 2-band structures can be switched via a mute-free crossfade.

OPTIMOD 6300's 2-band structure includes a CBS Loudness Controller™ for
DTV applications. This system measures subjective loudness (as perceived by an
average listener) and then closes a feedback loop to limit loudness to a preset
level. It effectively controls loud commercials, which are the primary irritant in
sound-for-picture applications.
The CBS Loudness Controller is not needed with the 5-band processing
because the 5-band processing's spectral consistency creates consistent
loudness as a desirable byproduct.

The 6300's AGC rides gain over an adjustable range of up to 25dB, compressing
dynamic range and compensating for both operator gain-riding errors and gain
inconsistencies in automated systems. The AGC output is available to drive STLs,
so the 6300 can be used as a studio AGC.

The 6300's processing structures are all phase-linear to maximize audible trans-
parency.

The 6300's equalizers and crossovers use 48-bit arithmetic to ensure mastering-
quality noise and distortion performance.

The 6300 can be remote-controlled by 5-12V pulses applied to eight pro-
grammable, optically isolated "general-purpose interface" (GPI) ports.

6300 PC Remote software is a graphical application that runs under Windows
2000 and XP. It communicates with a given 6300 via TCP/IP over modem, direct
serial, and Ethernet connections. You can configure PC Remote to switch be-
tween many 6300s via a convenient organizer that supports giving any 6300 an
ORBAN MODEL 6300