Alesis QS7, Reference Manual

Page: 63 / 141

Editing Programs: Chapter 6
Modulation Wheel Depth (-99 to +99) Page 4
Determines how moving the modulation wheel affects the filter cutoff frequency.
Example: With positive settings, moving the modulation wheel up raises the filter
cutoff frequency and moving it down lowers the filter cutoff frequency. With negative
settings, moving the modulation wheel up lowers the filter cutoff frequency and
moving it down raises the filter cutoff frequency .
Aftertouch Depth (-99 to +99) Page 5
At +00, aftertouch has no effect on the filter cutoff frequency. Applying aftertouch with
this parameter set to a positive value raises the filter cutoff frequency; conversely,
applying aftertouch with a negative value lowers the filter cutoff frequency. The higher
the number (either positive or negative), the greater the effect for a given amount of
aftertouch.
TIP: Many acoustic instruments sound brighter as you play them more forcefully; in
particular, brass gets brighter as you blow harder. Using aftertouch to increase a
sound’s brightness can give more control and realism with acoustic instruments.
Filter LFO Depth (-99 to +99) Page 6
At +00, the filter LFO has no effect. Higher positive values increase the amount of
filter LFO modulation. Negative values give the same apparent effect, but with
reversed LFO phase (i.e., if the filter cutoff frequency would normally be increasing
with depth set to a positive number, the cutoff would instead be decreasing at that
same moment had the depth been set to a negative number). Filter LFO parameters
(such as speed and wave shape) are programmed from within the FLFO Function
(see page 74).
TIP:
Filter LFO is good for giving wah-wah effects at slower LFO speeds, and for adding
“shimmering” with higher LFO speeds.
Filter Envelope Depth (-99 to +99) Page 7
The Filter Envelope is one of the most important settings in making a program. Many
programs will use the Filter Envelope to determine the tonal character of the sound
over time (attack, decay, sustain, and release). At +00, the filter envelope has no
effect. Positive values raise the filter from the baseline cutoff frequency according to
the envelope shape, and negative values similarly lower the cutoff frequency. The
higher the number (negative or positive), the greater the effect. Filter Envelope
parameters (such as attack and decay time) are programmed within the Filter
Envelope Function (see page 64).
QS7/QS8 Reference Manual 61