Mirage DSK-1 Manual page 49

Controls the maximum cutoff frequency the filter will reach at the top of the attack slope. It is
adjustable from zero (VALUE 0) to a maximum of 15KHz (VALUE 31). Note that the peak
level has no effect on the rate of the attack.
42/Filter Decay (00-31)
Controls the rate at which the filter cutoff frequency will descend from the PEAK value to the
SUSTAIN value. At VALUE 31, it will take 30 seconds to reach the sustain level. At VALUE 0,
it will drop instantly to the SUSTAIN level.
43/Filter Sustain (00-31)
Controls the cutoff frequency that the filter will hold as long as the key is depressed. At VALUE
0 it will be the same as the initial cutoff frequency (param. 36). At VALUE 31 it will be
maximum.
44/Filter Release (00-31)
Controls the rate at which the filter frequency will descend from the sustain value to the initial
cutoff frequency (param. 36) after the key is released. At VALUE 31 it will take 30 seconds to
reach the minimum level and at VALUE 0 it will release instantly.
45/Filter Attack vs (00-31)
The VELOCITYSENSITIVEFILTERATTACK parameter makes the filter attack rate dependent
on key velocity. At VALUE 0, key velocity will not effect the attack rate. Increasing the value
will make the attack rate more sensitive to keyboard velocity (increased key velocity will speed
up the attack rate).
46/Filter Peak vs (00-31)
The VELOCITY SENSISTIVE FILTER PEAK parameter makes the maximum filter frequency
peak level dependent on the key velocity. At value 0, key velocity will not affect the peak.
Increasing the value will make the peak level more sensitive to key velocity (increased key
velocity will raise the peak frequency).
47/Kybrd Decay Scaling of Filter (00-31)
A parameter that makes the decay rate of the filter envelope dependent on the location of the key.
This permits the filter to have a longer decay rate on lower notes than on higher notes. At
VALUE 0, it will have no effect on the decay setting. Increasing the value number will shorten
the decay time of higher notes.
48/Filter Sustain vs (00-31)