Acoustica Mixcraft 7 - Manual (Page 292)

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Mod Wheel. Consists of a low-frequency oscillator (LFO) capable of controlling Alpha
Sampler’s pitch or filter cutoff frequency, resulting in vibrato, wah wah effects, and
more. One good way to think of a modulation LFO is as a “third hand” to automatically
turn controls up and down.
The amount of modulation can be altered by using your keyboard controller’s mod
wheel (or any other physical controller set to transmit MIDI controller #1).
Speed. Adjusts the rate of the LFO.
Filter and Pitch Buttons. Selects the modulation destinations. Pressing Filter causes
the LFO to modulate the cutoff frequency of the filter. Pressing Pitch causes the LFO to
modulate the pitch. Both can be selected simultaneously if you really want to get crazy!
Triangle/Square Slide Switch. Selects between triangle and square LFO waves. The
triangle waveform cycles up and down in a smooth and uniform fashion, making it
good for subtle vibrato or, at extreme settings, swooping sirens or extreme wah effects
(when modulating the filter). The square waveform jumps back and forth abruptly,
making it good for sirens with alternating pitch, or when used with the Tempo Sync
switch, “synchro-sonic” type rhythmic effects.
Tempo Sync . Syncs the LFO rate to the tempo of the current project and causes the
speed knob to switch between musically relevant values, making the LFO modulate in
“lock-step” with the beat. The synced note values range from a whole-note to sixteenth-
notes.
OUTPUT
The Output section contains a big stereo level meter. Like any meter, you’ll want to
make sure this isn’t slamming into the red, otherwise you’ll get nasty digital clipping.
Volume. Adjusts the master volume level of Alpha Sampler. Its middle setting
represents unity, i.e. Alpha Sampler isn’t adding or subtracting gain, but turning the
master volume up can add some juice to very quiet samples, and dialing back will
prevent super loud samples from distorting - this can be especially helpful when the
filter’s resonance control is cranked up.