Dave Smith Instruments Prophet Rev2, Manual

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46 Sequencer Dave Smith Instruments
Gated Sequencer
The gated sequencer provides four 16-step sequences that play in parallel.
Each sequence can be routed to a chosen modulation destination. Each
step in a sequence can be set to a different value used to modulate that desti-
nation.
Unlike the polyphonic sequencer, the gated sequencer doesn’t play notes
unless one or more of the sequences are routed to oscillator frequency.
A gated sequence is really just a series of events at timed intervals that
changes the value of one of the synth’s parameters in discrete steps.
Because the four sequences play in parallel, up to four parameters can be
affected by each step, one per sequence. For the most part, the sequence
destinations are the same as the modulation destinations, since a gated
sequence is really just another modulation source.
For each sequence step, the envelopes are gated on for half the step’s
duration. The duration varies according to the BPM and Divide settings
(or the MIDI clock, if synced to an external source). The envelope
settings of the current program ultimately determine how long each step
plays, however, and longer (more legato) or shorter (more staccato)
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The sequencer requires a note to be gated on — that is, played from the
keyboard or via MIDI — in order for the sequencer to run. There is no
dedicated start or play button and it doesn’t respond to MIDI start/stop/
continue messages. But it can still sync to an external clock.
To start the gated sequencer running, simply press the
type
button to
select the gated sequencer, then hold down a note. Sequencer playback
then begins.
An audio signal connected to the rear-panel
sequence
jack can be used to
control sequencer playback. This makes it possible to tempo sync the sequencer (or
arpeggiator) to a recorded drum track or other audio source. Audio signals used to
drive the arpeggiator/sequencer should not exceed 5 volts peak-to-peak. See “Seq
Pedal Mode” on page 17 for more information.