Cedar AZX+, Owner'S Manual

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Buzz power
Once you have correctly identified the fundamental frequency, the buzz or hum
should be inaudible or, at the very least, greatly reduced. However, the
BUZZ
POWER
and
ATTENUATION
controls have not yet been adjusted so it is likely that
the material is being over-processed.
Your next step, therefore, is to reduce the
BUZZ POWER
control to a level just
above that at which the buzz becomes audible again.
Attenuation
If both the
FREQUENCY
and
BUZZ POWER
controls are set correctly, you will have
given the
BRX
+ all the information it needs to correctly identify the buzz or hum,
both in terms of its frequency spectrum and its amplitude. It now remains only to
determine how much of the noise is removed from the signal.
Your final step, therefore, is to reduce the
ATTENUATION
control (turn it anti-
clockwise) to a level just above that at which the buzz becomes audible. In
doing so, you will minimise the possibility of any signal being removed along
with the buzz or hum.
Note: There are occasions where a signal suffers from two or more buzzes or hums and
in these cases it will be impossible to remove the problem in a single pass of the
audio. If you encounter a signal damaged in this way, you should perform
multiple passes using the
BRX
+, or a single real-time pass on a
CEDAR
for Windows
system.
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