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1.0 OVERVIEW
1.1 Introduction
The MicroDAC IV is a portable, programmable digital filter targeted for applications requiring
unattended filter deployment. A replacement for the venerable MicroDAC III, this powerful
signal processor is fully self-contained and features:
•
Easy setup and operation
•
Operation with live voice signals, cassette and microcassette tape recorders, video cassette
recorders, telephone taps, and radio receivers
•
12VDC power input enables operation from AC power (external adaptor included) or from
12V automotive battery system
•
Compact enclosure (1.5” H x 7.3”W x 10.0”D)
•
Fixed bandwidth of 5.4kHz
•
Three factory preset adaptive filtering modes
•
Four programmable filtering modes
Key Features
•
Stereo processing capability, in addition to standard monaural
•
Windows
programming software, which allows easy, intuitive reprogramming of filters for
specific applications
•
Crash Detect, which will automatically clear the adaptive filter should it crash
•
Reference Compensation, which automatically adjusts the
RIGHT (REF)
input level as
necessary to avoid coefficient saturation and maintain optimum cancellation
•
Auto Mu, which maintains adaptive filter stability by automatically scaling adapt rate for both
input signal power and filter size
•
Both standard LMS (Least Mean Square) and LAV (Least Absolute Value) adaptation
algorithms available
•
EXTERNAL CLEAR connector, which allows manual clearing of the adaptive filter by remote
switch closure
•
Dynamically partitionable filter array, which allows combining large and small filters in series
•
Input Limiter, which automatically reduces input levels on overload
•
AGC, which automatically boosts level of processed signal prior to output
•
Digital Output (S/PDIF format) for recording directly to DAT
