Alesis QuadraSynth Plus Filter Modulation Wheel Depth -99 to +99, Filter LFO Depth -99 to +99

Editing Programs: Chapter 6

Filter (Page 2)

Modulation Wheel Depth (-99 to +99)

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)

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)

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 69).

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)

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 FENV Function (see page 74).

QuadraSynth Plus Piano Reference Manual 87