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OPTIMOD-PC
Specifications
SYSTEM
Number of Audio Processors: One stereo or two independent mono audio processors,
each consisting of the following cascaded processing elements: Internal Processing: In-
put Stereo Enhancer Two-Band defeatable AGC with window gating Five-Band
Equalizer/HF
Loudness Controller Output.
Number of Channels: The 1101's audio driver allows it to appear as two standard sound
devices to the computer operating system. Each of the two sound devices can handle
one stereo channel or two mono channels. The channels can be mixed and routed via a
three-bus mixer ("processed," "direct device 1," and "direct device 2"), but the 1101 can
only apply stereo or dual-mono audio processing to the output of the "processed" bus.
The remaining two "direct" busses are applied to the output routing switcher but cannot
be further processed. See block diagram.
Frequency Response: ±0.1dB, 2-20,000Hz (Bypass software running).
Input/Output Delay: Adjustable from 25 ms to 62 ms in 1 ms steps. Presets available for
one frame of: 30 fps (33.33ms), 29.97 fps (NTSC color video; 33.37ms), 25 fps (most
PAL video; 40ms), and 24 fps (film; 41.67ms). "Minimum" delay is also available; this de-
lay will vary according to the processing structure in use and crossover mode settings.
Internal Filters: 10, 11, 12, 13, 14, 15, and 20kHz can be used to provide additional anti-
aliasing for low sample rate services, such as Internet Streaming Encoders, Eureka-147
(24kHz mode), iBiquity HD-AM (32kHz) and Digital Radio Mondiale.
Internal Sample Rate: 48 kHz
Wave Sample Rate: 8 - 96 kHz
Internal Resolution: 24-bit fixed point (3 x Freescale DSP56367)
Input/Output Resolution: 24-bit
Peak Control: Peak limiter is oversampled at 192 kHz, yielding a worst-case overshoot of
0.5 dB at the analog output and for all output sample rates. (To achieve this perform-
ance at 32 kHz output sample rate, it is necessary to set the 1101's lowpass filter cutoff
frequency to 15 kHz.)
Phase Response: All processing is linear-phase (constant group delay).
AGC (Automatic Gain Control): ±12dB/24dB gain range, Two-Band, Gate and Window
enabled.
Stereo Enhancer: Two styles available: (1) Orban-patented L–R dynamic expansion trig-
gered by L+R transients; (2) L–R delay.
Equalizers: Shelving Low Bass EQ, selectable 6 dB, 12dB or 18dB/octave. Three-band Pa-
rametric EQ with analog-style bell-shaped curves. Program Adaptive HF Enhancer.
Enhancer Multiband
Compressor Look-ahead
SPECIFICATIONS
Section 7
Specifications
Limiter Automatic
7-1
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