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Bass Cut
Bass Cut is the next tone-shaping processor.
Basically, it's a high pass filter with a very steep
slope. In mastering, Bass Cut is most often used
to remove "subsonic" frequencies, sounds that are
below the human hearing range.
The Bass Cut effect is very simple, with just two
controls:
•
ON/OFF—turns the Bass Cut section on (lit) or
off (unlit).
•
FREQ(Hz)—sets the cutoff frequency below
which all frequencies are removed. For most
types of music, the default setting (20 Hz) is
appropriate.
Enhancer
The MTK's final tone-shaping processor is
the Enhancer. It works by adding musical
harmonics at and above a selected frequency.
Depending on the setting, the Enhancer
adds brilliance, edge, or "air" to the sound.
The Enhancer has the following controls:
•
ON/OFF—turns the Enhancer on (lit) or
off (unlit).
•
FREQ(Hz)—sets the frequency at which
the Enhancer begins to act. This can
be set anywhere between 200 Hz and
20000 Hz (20 kHz).
•
SENS—sets the amount of harmonics added to the signal.
•
MIX LEVEL(dB)—sets the amount of the Enhancer effect
that is blended with the mix.
The Dynamics Processors
A music mix consists of many loud and soft sounds that convey
the rhythm and emotion of the performance. These variations
are referred to as musical "dynamics. " The MTK provides a set
of four powerful processors for controlling them.
The Mechanics of Dynamics Processing
A dynamics processor is essentially an automatic volume
control. Changes in a signal's level trigger the dynamics
processor to act, adjusting the volume according to the
processor's settings.
All dynamics processors change a signal's level based upon
settings determined by the following controls:
•
A threshold level setting—tells the processor to start
working when the signal reaches a particular level.
•
An attack setting—tells the processor how quickly it should
respond after the signal reaches the threshold level.
•
A ratio setting—tells the processor how much to adjust the
signal's volume. The higher the ratio, the greater amount
of processing.
•
A release setting—tells the processor when to stop adjusting
the signal's volume.
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