Manual

3.6 DescriptionofControls 3 THE OXFORD DEBUZZER
3.6.2 FrequencyDetectPanel
PeakProfile This shows the strength of a given nominal frequency in the input signal.
AUTO The removal filters automatically follow the peak frequency found in the Peak
Profile. It is suitable for tracking a weak, slowly wandering fundamental and
operates over all three frequency bands.
FAST This allows the removal filters to automatically follow a quickly wandering
fundamental. This mode operates on MF and HF frequency selections only. The
peak profile is not active for FAST mode.
FREEZE For a fundamental that is a fixed frequency, once the auto mode has found the
best nominal frequency, you can Freeze the nominal. In Freeze mode, the removal
filters follow the value of the nominal frequency set by the big rotary frequency
control.
Sensitivity Start at a high value and reduce to the point at which the hum becomes
audible again, then push it up a little to make the hum disappear. Doing this
correctly ensures least damage to the signal.
ALT MODE This allows two different modes for hum removal. Try both modes with the
Sensitivity knob, and use the mode that allows the lowest Sensitivity setting.
TONE ON Enables the onboard tone generator which can be useful for finding the
frequency of unusual hums, whines or whistles.
TONE LEVEL Set the level of the tone generator.
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