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AGC and Limiter sections.
Deep Bass EQ: For those who demand thunderous bass. Up to 12 dB of "thunder" can be added to shake
your listeners' walls! This is not merely a simple bass EQ, but a sophisticated concept which considers the
time alignment of low frequencies as they pass through the entire system. This allows loud, clean,
thunderous low end, with no sacrifice to the overall loudness of your signal. Deep Bass is a shelf boost at
85 Hz that utilizes a phase linear 12 dB per octave slope to produce the shelving EQ function.
Phat Bass EQ: Phat Bass is a unique enhancement that adds filtered harmonics to the bass frequencies,
carefully weighted to deliver its effect during the initial rise time of the low frequencies. Low frequency
texture is emphasized with this control; the resulting effect is that older recorded materials sound fuller (or
"phatter") with the illusion of added loudness. The pleasing low frequency harmonics generated by the
Omnia's Phat Bass algorithm helps your station sound bigger and fuller on radios with smaller speakers,
such as portable or desktop radios. This gives your listeners the illusion of deeper bass response from their
radios than they're actually capable of.
Warmth EQ: The Warm Bass parameter is a second order shelf boost with a corner frequency of 150 Hz.
Warm Bass compensates for program material that is naturally lacking in upper-bass punch. The parameter
is adjustable over a 6 dB range.
Stereo EXP: This is a DSP stereo enhancement effect that enhances the stereo soundfield without
unwanted side-effects such as unnatural imaging or exaggerated multipath. Program audio previously
lacking in stereo width will have noticeably increased ambiance and dimension when Stereo EXP is active.
Vocals stay up-front and the sonic details of musical instruments are heard with an apparent slight loudness
increase when listening in stereo. The stereo width is automatically controlled to avoid over-enhancement.
Multiband Dynamic Peak Limiter: Not just simple limiter sections using single time constants, but rather a
sophisticated series of processes which make adjustments based upon the "peak weight" of the signal.
These advanced algorithms rely upon peak-weighted calculations to determine the strength of a transient
peak, which then determines if very fast dynamic control is required. Faster time constants are used only
when necessary, and then only under certain conditions that are dictated by the density of the signal. A
built-in release Hold algorithm allows the limiter to rest momentarily in order to reduce IM distortion.
For maximum clarity and punch, the system uses different algorithms for each of the bands: The super low,
low and mid low bands use a feedback limiter configuration, producing a larger, warmer sound on the
lower frequencies. The mid high, high and super high bands utilize a feedforward limiter design that
maintains a more open, natural and musical texture on higher frequencies. The user may adjust the
individual limiter thresholds, their hold threshold values, as well as each band's attack and release times.
The limiter behavior has been optimized by fixed crossover frequencies of 85Hz, 330Hz, 1kHz, 3kHz, and
7.5kHz.
Non-Aliasing, Distortion Controlled Final Limiter/Clipper: Typically, the clipper section is where
previous attempts at DSP-based clippers have failed. The term "digital grunge" and "that digital sound"
came from early DSP based attempts at simple peak clippers. Omnia-6's proprietary DSP-based clipper
algorithm generates no in-band aliasing artifacts, and reduced audible processing distortion while
producing a clean and very loud signal. Users have reported that this implementation exceeds the
"smoothness" of a well-designed analog limiter! Parameter adjustments include Clipper Drive, Bass Clip
Threshold, Clipper Silk and Composite Clipper Drive.
Stereo Generator / Encoder : All-digital numeric implementation - theoretically perfect performance is
Omnia 6 Use and Installation Guide – Version 1.00a
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