Digital Audio Corporation PCAP II, User Manual

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inverse filter within the specified frequency limits; this
may be set to the approximate difference in
amplitude between the largest and smallest input
spectral components within the frequency limits.
Maximum
Range is 50dB .
NOTE: Maximum Range should only be used when
necessary; it may excessively elevate background
noises.
For Equalize Voice operation, the inverse filter
response rolls off to -40dB outside the frequency
limits. For
Attack Noise operation, the inverse filter
response rolls up to 0dB (no attenuation) outside the
frequency limits.
EQ or Attack Gain specifies the digital boost to be
applied to the entire spectral inverse filter curve.
Normally,
Gain is applied in the Equalize Voice
mode; the gain is usually 0 dB in the Attack Noise
mode. This boost is necessary to make up for the
volume reduction performed by the inverse filter.
Gain should be initially set to approximately 50
percent of the Range setting. If filter output is
distorted, reduce Gain setting and re-Build the filter;
if filter output level is too low, try increasing the Gain
setting.