User`s manual

Next, the signal is 200Hz Highpass filtered, to remove any low frequency noises that may remain

after processing, and 3200Hz Lowpass filtered to remove high frequency hiss.

Finally, a 10dB AGC is applied to correct for near party / far party talkers, and to provide a good

output level for recording.

3.4 Programmable Filter Descriptions

Filter modes A-D are factory preset as large, single 2CH Adaptive filters. Their settings are

listed in Tables 7-10. Please refer to the MicroDAC IV Portable Programmable Digital Filter

Configuration Software User’s Manual for complete details on programming filter modes A-D.

Table 7: Programmable MODE A Factory Presets

Parameter Preset Value

Limiter Disabled

Filter Size 3600 taps

Delay Channel Input (Primary)

Delay 100 samples

Adapt Rate 16

Adapt Mode Auto

Output Residue

Algorithm LMS

Reference Compensation Enabled

Crash Detect Enabled

200 Hz Highpass Filter Disabled

Lowpass Filter Disabled

AGC Disabled

Table 8: Programmable MODE B Factory Presets