26
Adjusting Ducking Settings
Ducking is an audio effect in which the level of one audio signal is reduced by the pres
-
ence of another signal. For example, if background music is playing when a page is made,
the ducker will sense the presence of audio from a paging microphone and trigger a
Knee
Sets how far below the threshold compression will begin
to be
gradually
applied to the signal. A very low value,
known as a
hard knee
, immediately applies full compres
-
sion once the threshold is reached. A high value, known
as a
soft knee
, will gradually start applying compression
before the signal reaches the threshold, not reaching
the full effect until the threshold is reached, thereby
“rounding off” the compression effect. Increasing the
knee level decreases the obvious transition from the
uncompressed to the compressed sound.
The range is 1 to 100 dB.
Ratio
Sets the compression ratio to be applied to the signal.
For example, if the ratio is set for 6 (6:1), the input signal
must increase by 6 dB for the output level to increase by
1 dB.
The range is 1 to 100.
Input meter
Shows the strength of the input signal.
Output meter
Shows the strength of the output signal, providing a
visual indicator of the effect of the compressor on the
output signal.
Comp LED
Illuminates when compression is being applied to the
signal.
Table 9. Compressor Settings
