Boss WAZA-AIR Using Manual page 87

NS
This effect reduces the noise and hum picked up
by guitar pickups. Since it suppresses the noise in
synchronization with the envelope of the guitar
sound (the way in which the guitar sound decays
over time), it has very little effect on the guitar
sound, and does not harm the natural character of
the sound.
Parameter
ON/OFF
THRESHOLD 0–100
Value Explanation
OFF, ON Turns this effect on/off.
Adjust this parameter as
appropriate for the volume
of the noise. If the noise
level is high, a higher setting
is appropriate. If the noise
level is low, a lower setting is
appropriate.
* High settings for the
threshold parameter may
result in there being no
sound when you play with
your guitar volume turned
down.
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