Digital Audio Corporation PCAP II, Руководство пользователя

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Try to capture a representative spectrum using the Freeze/Run
button. Once a stable, representative spectrum is obtained on the
display, Freeze the analyzer. This same spectrum may be used for
several different variations of the filter (changing Limits or Range, as
an example).
NOTE: Immediately following Freeze, the screen will continue to
update briefly, as the PC is receiving the final prefrozen spectral data
from the external unit.
Limits: In the Equalize Voice Operation, the Upper and Lower Voice
Limits should bracket the voice signal. Outside these limits, the
audio is bandpass-filtered. Setting the Lower Limit above 300 Hz and
the Upper Limit below 3000 Hz may adversely affect intelligibility. Try
several sets of Limits; build the SIFs; Store the filters, and Recall and
compare in an A/B fashion.
In the Attack Noise Operation, bracket the noise band surgically with
these Limits. If there are several disjoint noise bands, series
Figure 4-38 SIF with EQ Range set to 50dB