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VP-8IP / Sep 2013
G E N E R A L I N F O R M A T I O N
Overview
The VP-8
iP
is the industry’s first true multi-mode audio processor, having six
built-in operating modes for: FM, AM, FM-HD, AM-HD, MP3/AAC>48k, and
MP3/AAC<48k. In each mode, special processing algorithms designed by Vorsis
condition the audio appropriately for the selected transport medium.
Audio is first preprocessed by a phase-linear four-band AGC, then by an eight
band limiter and final limiter or clipper. The eight band and final limiter section
operation is entirely different in each of the operating modes due to special signal
conditioning algorithms that have been specifically designed and tuned for the
particular needs of the operating mode. Changing operating modes is as simple as
selecting a new mode from within the PC-based Windows Graphical User Interface;
no reboot of the unit is required.
Feature Highlights
- Selectable phase rotator for making voice energy more symmetrical.
- Adjustable input high-pass filter may operate in Stereo or M/S modes.
- Separate audio input gains for analog and digital inputs.
- Four band parametric EQ may be placed before or after multiband section.
- Four band linear phase crossover with adjustable crossover points.
- Exclusive Wheatstone Multiband Dynamics Processing.
- Precision eight-band multiband limiter.
- Specialized codec preconditioning tailored for each of the four CODEC modes.
- Advanced Distortion Masked Clipper for absolute FM and AM peak control.
- Reference-grade stereo encoder available in FM mode.
- Adjustable positive asymmetry, LF tilt correction, and dual transmitter outputs
in AM mode.
- 4.5kHz, 5kHz, 5.5kHz, 6kHz CCIR, and 6.5kHz, 7.5kHz, 10kHz NRSC
low-pass filters supported in AM mode.
At the heart of the VP-8
iP
is a specialized DSP farm containing both floating and
fixed-point processors. Advanced signal routing capability allows restructuring of the
processing chain as desired and on-the-fly. Confidence monitoring via headphones
can be patched to any processing section at will. The flexibility of the headphone
monitoring also allows a backup audio source that is attached to the VP-8
iP
but not
even on the air to be monitored!
The most salient feature of the VP-8
iP
is its eight band final processing section,
which is completely reconfigured for each of the six possible operating modes. This
innovative design allows for far more flexible peak control and audio tailoring for
each of the specialized six modes than the antiquated limiters having fewer bands
found in other audio processors on the market today.
