Shift
By holding down the
Cycle
button while turning the
Offset
knob, the
Shift
amount can
be controlled. This is similar to
Offset
, but is applied
after
the envelope is offset and
scaled. The DC level of the
Shift
amount is the center-line across which the
Scale
knob
attenuates and inverts the envelope.
Shift
essentially shifts the scaled/offset envelope
up and down, causing clipping at the -9.4V and +9.4V rails.
By default,
Shift
is 0V, which is the most intuitive setting. Any envelope voltages
(amplitude and offset) that the
Mini PEG
is capable of generating can be produced
without adjusting
Shift
. However, with a proper understanding of DC offset, amplitude,
inversion, and clipping, changing
Shift
can help in special-case situations by allowing
the
Scale
knob to invert the envelope across a voltage other than 0V.
ENV OUT
ENV OUT
is the main envelope output. Its range is from -9.4V to +9.4V. The red and
blue lights above the
ENV OUT
jack are helpful in determining if the envelope is
positive (blue), negative (red), or both.
5V ENV
The
5V ENV
jack is an envelope output that always produces a 0V to +5V envelope
regardless the
Offset
,
Scale
, and
Shift
settings.
EOF
The End-of-Fall (
EOF
) jack outputs a gate that goes high when the fall segment ends. If
the envelope is stopped, the jack will remain high. It will only go low when a rise
segment ends and a sustain or fall segment begins. Another name for this jack might be
“Envelope is Rising or Stopped”.
In System Mode, this jack can be configured as an End-of-Rise jack, a Half-Rise jack,
or a Tap Clock output jack. End-of-Rise (EOR) goes high when a fall segment starts
(and stays high if it stops), and goes low when a rise segment starts (and stays low if it
sustains). This jack could be called “Envelope is Falling or Stopped”.
Half-Rise goes high when the rise portion is half-way finished, stays high through any
sustain period, and goes low when the fall portion is half-way finished.
Tap Clock runs freely even if the envelope is not running. It outputs the raw ping clock
(before division/multiplication) that was tapped on the
Ping
button, ignoring any
external clocks. See the Tap Clock Output section for details.
The
EOF
jack outputs a square wave by default, but in System Mode it can be changed
to output triggers instead.
Maximum and Minimum Clock Times
The
Mini PEG
can process incoming clocks and output envelopes up to about 4kHz, with some jitter,
glitches, and imprecision. When outputting frequencies higher than 500Hz, the output will contain
increasing amounts of noise and glitches, but still holds a solid fundamental frequency and waveshape.
Since it goes well into the audio range, the
Mini PEG
can be used as a rudimentary lo-fi harmonizer
(e.g. sub-octave generator). Be aware that when using the
Mini PEG
as an audio generator, small
amounts of jitter on the incoming clock will cause large amounts of audible distortion and glitches on
the output.
The maximum envelope time is about 29 hours (1750 minutes). The maximum ping clock time is also
about 29 hours, so if you fire a clock pulse into the
Ping
jack once a day, the
Div/Mult
setting must be
= or multiplying in order to produce an accurate output.
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ENV OUT
5V ENV
EOF
Offset
Cycle
+
