User`s manual

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Voice Limits: frequency range, or “ASIF region,” over which the ASIF is applied. Two
red markers, controlled by the sliders below the display trace, indicate
where the lower and upper voice limits are located. The markers may
also be adjusted by clicking and dragging within the display trace.
Viewing audio on the display trace while manipulating the markers is an
easy way to identify where your ASIF region limits should fall.
In Equalize Voice mode, the ASIF region is typically chosen to be the
range over which speech frequencies are found. Setting a Lower Limit
above 300 Hz or an Upper Limit below 3000 Hz is not recommended in
equalize voice mode, as intelligibility may suffer. When in Equalize
Voice mode, all frequencies outside the ASIF region are assumed to be
non-speech and are therefore attenuated.
In Attack Noise mode, the ASIF region is typically chosen to “bracket”
the bandlimited noise as closely as possible. Frequencies outside the
ASIF region will be “passed through,” i.e. there will be little or no effect
outside the ASIF region except for a narrow transition band between the
ASIF region and the passbands.
Note: Changing the Voice Limits does not require an adaptation period
to arrive at a “good” solution. Because a full average spectrum is
maintained regardless of the Voice Limit settings, the new Voice Limits
will take effect instantaneously in both the output audio and the display
traces. However, since the auto gain adapts based on the actual applied
filter with voice limits taken into account, there may be some adaptation
time required to reach a stable auto gain value after the limits are
changed.
Store/Recall
Buttons:
The Store and Recall buttons allow the user to save the state of the
ASIF to be recalled for later use. After clicking the Store button, the
user selects an “.asf” filename under which the ASIF state will be stored.
Upon clicking OK, the system takes a snapshot of the filter state and
saves that information into the specified file.
To restore a saved ASIF file, the user clicks the Recall button, selects the
desired “.asf” file, and then clicks OK for the settings to be loaded into
the ASIF module.
The Store and Recall functionality saves the adapted state of the filter in
addition to all the user settings. This means that the stored file contains a
filter shape that is adapted to whatever audio was running through the
system at the time of the store. When the filter is recalled, it opens with
Adapt disabled so that the state of the filter is preserved until the user
wishes it to begin adapting.