User Manual

12.5 Sonnox DeBuzzer 333
Tone On Button
This button enables an audible tone generator, which can be used to aid location of the
buzz fundamental. While the Tone button is on, a touch pad appears above the button
and becomes a Tone level control. It defaults to -18dB, and has a range of -6dB to
-96dB.
Sensitivity Knob and Touch Pad (%)
This controls the sensitivity of the buzz detection circuit. Fully sensitive might allow the
detection circuit to lock to inaudible and possibly undesirable frequencies. Stronger
buzzes, which typically would be removed first, will require a less sensitive setting.
Hum/Buzz Mode Button
This control switches between Hum mode and Buzz mode. In Hum mode the band-
width limit for harmonic removal is 0 to 800Hz. In Buzz mode the bandwidth limit for
harmonic removal is 0 to 4000Hz. Hum mode is less damaging, and should be used
when possible.
Enable Button
This button enables the buzz removal processing. It allows glitch-less comparisons with
and without the buzz removal. It is important to note that with this button "off" (i.e. the
buzz removal processing is disabled), the buzz detection circuit is still enabled and the
Detect display will still show the degree of buzz detection.
Reduction Display
The Reduction display indicates the level of audio that is being removed from the signal.
Attenuation Knob and Touch Pad (dB)
The attenuation knob and touch pad determine the level of attenuation that the buzz
removal circuit will apply, up to a maximum of 96dB. Generally this should be set so
that the buzz is just inaudible. Excessive use of attenuation can degrade the signal
unnecessarily.
Auto Button
This button enables Auto mode for the buzz detection circuit. In this mode the buzz
detection is continually calculated and a slow drift in the buzz fundamental frequency
will be automatically followed. This mode is useful for material with a time-varying buzz
component. In this mode the removal filters follow the Detected frequency.
Freeze Button
This button enables Freeze mode for the buzz detection circuit. In this mode the buzz
fundamental is fixed to the frequency shown in the touch pad window. This mode is
useful for material with fluctuating buzz level, but with a constant buzz frequency. In
this instance, Auto mode would suffer when the buzz level drops and would typically
re-hunt for a different buzz fundamental. In this mode the removal filters follow the
Nominal frequency.
Detect Display
This display indicates the degree of detection that the buzz detection circuit has
achieved.
WaveLab 7