How Does It Work - Peavey Feedback Ferrett Manual De Operación

Operating Instructions
™
Where To Put Your Ferret
The Feedback Ferret can be used in a variety of locations within a sound system. Place a Ferret at the input
insert of every microphone or you could process many microphones together by placing a single Ferret on
the output of a vocal subgroup. One of the most common connections is to install the Ferret between the
mixer's output and the power amp's input. This mixer output may be from the main output or the monitor
output‚ depending on your needs. You can also place the Ferret on a single channel's insert to eliminate
feedback from a single microphone or instrument. Once the Ferret has determined the problem
frequencies for a particular setup‚ you can save that group of filter settings to one of the four preset
buttons for instant recall.

How Does It Work?

The Ferret includes a set of 16 digital notch filters that employ sophisticated algorithms that seek out and
destroy feedback‚ without destroying your tone. There are two sets of filters on the Ferret‚ static and
dynamic. Filters 9–16 are static and always set before the dynamic filters (1–8). Once these static filters are
set‚ they lock and maintain their status until they are reset by the user or a different preset is selected. The
dynamic filters (1–8) are those filters that change as your needs change. Any filter (static or dynamic) that
is set‚ but not locked (as indicated by blinking filter LED)‚ will slowly release and return to flat (0 dB) and
be available for further use.
When the Ferret locates an offending frequency (feedback)‚ it applies a filter‚ starting with filter 16. This
filter is centered at the feedback frequency and uses only as much attenuation as needed to remove the
feedback. If feedback continues‚ the filter depth is progressively increased until the feedback is gone. If the
feedback is momentary‚ such as a short squeal‚ the Ferret applies a filter but slowly releases it in .10 dB
steps until it is returned to flat (0 dB). If the same frequency causes feedback again‚ the same filter will be
reapplied. This process continues as additional filters are engaged‚ starting from the right side of the Ferret‚
until all feedback is gone. Monitoring continues as the Ferret attempts to release each active unlocked filter
.10 dB at a time. Once a filter reaches 0 dB‚ the Ferret returns the filter to the queue. The Feedback Ferret
continuously applies the least amount of attenuation required to eliminate feedback.
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