Wiard GR-371 User Manual

Wiard Model GR-371 Woggle Bug

out tone and CV.

SMOOTH TONE out (1-6 octaves).

off when the woggle PLL is in lock.

Woggle Bugs. Audio is output when B LED is lit.

LFO [out] 0-10v square wave from 0.05-50 Hz.

[out].

SMOOTH RANGE knob.

Woggle Bug and 2 goes to right.

TONE [outs] of each Woggle Bug. Sound affected by all 10 knobs.

Wiard GR-371 Woggle Bug

Rev: 031001

LEDs
LR (LFO Rate) Green, lit when LFO [out] is at 10v.

Woggle

Bug

Audio

Two circuits - WOG1, WOG2

Generator Processor

Out1, Out2
Smooth Tone
Woggle Tone

Child Tones

None

ST (Stepped Voltage) Red/orange, indicates voltage at STEPPED CV
[out].

SM (Smooth Voltage) Red/orange, indicates voltage at SMOOTH CV [out]
B (Bug Light) Yellow, indicates audio pulse rates at OUT1 [out] and OUT2

[out]

Control
Voltage

Woggle Control
WOGGLE RANGE [knob] Sets the range of

WOOGLED TONE [out] (1-6 octaves).

WOGGLE TIME [knob] Sets the lock in time of the
woggle oscillator phase locked loop. The B lamp is

Step and Tone Range Setting
CLUSTERING [knob] Sets the range of probable

values for the STEP CV [out]. At minimum, equal
probability of voltage from 0 – 10 V at STEP CV
[out]. At maximum, limits change to next value ­samples tend to cluster.

LFO Section
RATE [in] 0-10v added to LFO RATE to vary LFO

rate from 0.05-50 Hz.

Smooth Output
SMOOTH CV [out] 0-8v smooth random voltage.

Probable rate of change set by LFO RATE knob
added with RATE [in].
SMOOTH TONE [out] 0-10v audio rate square
wave, the frequency range of which is set by the

Woggle PLL/VCO Disturb CV Inputs
DISTURB CV 1, DISTURB CV 2 [in] 0-10v control

voltage added to STEP CV out at the WOGGLE TONE
in. WOGGLE RANGE knob must be set to less than
maximum for this input to work, 1 goes to left

Step CV

Smooth CV

Woggled CV

LFO (SQR)

None

LFO Control
LFO RATE [knob] Value added to voltage at RATE

[in], controls LFO rate linearly (1 cycle / 20 sec to
50 cycles / sec). Sets rate of change of SMOOTH

Oscillator Range
SMOOTH RANGE [knob] Sets the range of

Main Output Section
OUT1, OUT2 [out] Primary audio outs for the

Stepped Output
STEP CV [out] 0 – 10V stepped random voltage. A

new voltage is selected at each positive going clock
pulse at STEP CLOCK [in].
STEP CLOCK [in] New voltage selected each time a
positive clock pulse crosses 1.5V. Normalized to LFO

Woggled Output
WOGGLED CV [out] 0 – 8V product of the smooth

and stepped random voltages. The demodulated
output of a phase locked loop frequency modulation
detector tracking the smooth tone and being
disturbed by the step control voltage. PLL loop lock­in time is set by WOGGLE TIME knob. When the PLL
is in lock, the B LED is off.
WOGGLED TONE [out] 0 – 10V audio rate square
wave, the frequency range of which is set by the
WOGGLE RANGE knob.

© 1996-2003 Wiard Synthesizer Company – design by Bill Sequeira/Axon Hillock Source of Uncertainty

Child Tone Outputs

Child tones are the XOR (ring mod) product of the two Woggle Bug parents.

CHILD TONES 3 [out] – 0 – 10V pulse wave which is the audio XOR product of the SMOOTH TONE
[out] of each Woggle Bug. Sound changed by both SMOOTH TONE controls.

CHILD TONES 4 [out] – 0 – 10V pulse wave which is the audio rate XOR product of the WOGGLE

Wiard Model GR-371 Woggle Bug

Woggle Bug First Order Units

SMOOTH

RANGE

RATE

LFO
Square

LFO RATE

Smooth

Random

Square

LFO

CLUSTERING

S&HCLOCK

Woggle
Saw

SMOOTH CV

LFO

STEP CV

DISTURB CV 1

VCO

Freq

Cv

WOGGLE

TIME

PLL

SMOOTH TONE

WOGGLE

RANGE

Saw

VCO

RING
MOD

(XOR GATE)

OUT1

WOGGLED CV

WOGGLED TONE

Woggle Bug Second Order Units

SMOOTH TONE

WOGGLED TONE

WOG1

SMOOTH TONE

WOGGLED TONE

WOG2

RING
MOD

(XOR GATE)

RING
MOD

(XOR GATE)

CHILD TONES

OUT3

Smooth Smooth

OUT4

Woggle Woggle

© 1996-2003 Wiard Synthesizer Company – design by Bill Sequeira/Axon Hillock Source of Uncertainty