3
1.0 OVERVIEW
1.1 Introduction
The PicoDAC digital filter is a compact, low-power digital filter intended for dedicated field
signal processing applications. This powerful signal processor is fully self-contained and
features:
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Easy set up and operation
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Operation with live voice signals, tape recorders (all types), video cassette
recorder, telephone, radio receiver, and body transmitter
•
Low-power, 8-16 VDC operation, or internal 9V battery operation
•
Compact enclosure (1.1" H x 2.8" W x 7.2" D)
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Bandwidths of 3.4, 5.0 and 7.5 kHz suitable for voice enhancement
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Ten selectable filters to cover most voice enhancement scenarios
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Two stages of 256th order, fixed and/or adaptive filters
1.2 Standard Filter Configurations
The ten standard filter configurations in the PicoDAC are optimized for noise removal and
clarification of live and recorded voice signals. The standard filter configurations consist of
combinations of three different adaptive filter sizes at three bandwidths followed by either
another short adaptive filter or a bandlimiting filter. The selected combinations of filter
bandwidths and sizes allow the operator to easily customize the PicoDAC to a wide range
of noise removal situations. Any of the ten filters can be rapidly selected with a front panel
FILTER
switch as detailed in Section 3.0.
1.3 Custom Filter Configurations
Custom filter selections are also available for special applications. Please contact
Digital Audio Company for further information.
