Alesis ion Manuel D'utilisation Du Propriétaire page 8

which enables portamento, and the [waveform select] buttons, which
determine the waveform utilized by each oscillator.
Special cases
[tap tempo] button – This button allows you to match the speed of the
arpeggiator, an LFO, or other effects to the tempo of a song simply by
tapping the button in time to the music! The LED under the button
flashes to give you an idea of what the tempo setting is currently.
[transpose] and [octave] buttons – These three buttons control the
global transposition and octave shift of the Ion's keyboard. The settings
will affect all programs and setups, as well as the MIDI note output.
Knob functions
volume knob – This is the red knob just above the Pitch wheel. It
controls the level of the main and headphone outputs. Note that this
control has no effect on the aux outputs.
tempo knob – This is the knob in the upper left corner of the Ion. It
controls the speed of any number of functions, most notably the
arpeggiator.
data knob – This is the clear knob to the right of the display. Use it for
fine-tuning your edits, or to edit a parameter that has no front-panel
knob. It is also used for selecting Programs and Setups.
Performance controls
The Ion gives you a number of expressive controls at your fingertips, in
addition to all of the knobs and buttons:
Velocity – The Ion's keyboard will respond to differences in how hard
you play the keys. You can tailor-make the keyboard's response to your
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