4ms Company Mini PEG, Руководство пользователя

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Sync and Async Modes
The Mini PEG can operate in Sync or Async mode. Most of the
time, the difference between the two modes is not important
and the mode will automatically change in an intuitive way.
In Sync mode, the envelope will always begin and end on the
divided/multiplied ping clock, but in Async mode the envelope
can begin at any point in time. Thus, Sync mode locks the
phase of the envelope and the divided/multiplied ping clock
together, while Async mode allows for any phase difference.
Changing Between Sync and Async Mode
• To enter Sync mode, fire a trigger into the Trigger jack while
it’s configured as a Quantized Trigger jack. Or, you can fire a
trigger into the Cycle jack while it’s configured to enter Sync
mode. See System Mode for instructions on how to configure
the jacks.
• To enter Async mode, fire a trigger into the Trigger jack when it’s configured as an Async Trigger or
Async Gate jack.
• You can toggle modes by holding down Cycle , tapping Ping , then releasing Cycle .
In Sync mode, the Ping button flashes cyan. In Async mode, the Ping button flashes white.
Figure 1 illustrates envelopes in each mode. The Mini PEG begins cycling in Sync mode: each
envelope starts o n a ping clock pulse. When a trigger is fired into the Trigger jack (which is set to
Async Trigger or Gate mode), the envelope immediately resets and continues cycling out-of-phase with
the ping clock. The module has now changed to Async mode automatically. In this case, it’s not
important that you know what mode the module is in, it’s just doing
what you told it to do.
Cycle Button in Sync and Async Mode
When using the Cycle button, it can be important to know whether
the Mini PEG is in Sync or Async mode.
When you turn on the Cycle button in Sync mode, the envelope will
immediately start outputting from the same phase as the ping clock.
You can imagine this as if the envelope was always running (in
sync with the ping clock), and the Cycle button un-mutes it. See
Figure 2. This can cause some discontinuities, but the envelope will
always be in sync with the ping clock. When you turn Cycle off,
the output will stop after the current envelope finishes.
If you turn on the Cycle button in Async mode, the envelope will
immediately start outputting from zero. One or more complete
envelopes will always be output, but they will be synced to your
button press, not to the ping clock. See Figure 3.
Modulating Div/Mult in Sync and Async Mode
If you change the Div/Mult amount while an envelope is running,
the module’s response will depend on whether it’s in Sync or
Async Mode. In both modes, the envelope slope will track the
Div/Mult amount as long as the amount keeps changing.
In Sync mode, if no change to the Div/Mult is made for 50ms,
then the envelope will re-sync to the ping clock based on the
new Div/Mult amount. See Figure 4. The Div/Mult knob was
turned from /2 to = at the black arrow. Between the black and
red arrows, the envelope makes a quick transition to a new
envelope which is in sync with the ping clock. Notice how every
envelope starts and ends exactly on a ping clock, even though
we changed envelope lengths.
In Async mode there is no requirement that the envelopes sync
to the ping clock, so it will transition smoothly between
waveforms without any re-syncing. See Figure 5. The envelope
tracks the changes in the Div/Mult amount but never needs to
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Figure 1: Envelope (green) is synced to
Ping clock (magenta) until an Async
Trigger (gold) is received
Figure 2: Pressing Cycle button in
Sync mode.
Figure 3: Pressing Cycle button in
Async mode.
Figure 4: Changing Div/Mult in Sync Mode