User`s manual

VCO (VOLTAGE CONTROLLED OSCILLATOR)

The Oscillator is the primary sound generating component of an analog synthe-

sizer.BasedonthesamecircuitryastheMinimoogVoyagerandLittlePhatty,

the Werkstatt oscillator produces a raw waveform that is rich in harmonics.

While the keyboard determines the note being played, the frequency knob

determines the pitch of that note.

FREQ (FREQUENCY KNOB)

The Frequency knob offers a wide pitch range, extending over nine octaves.

Keep in mind, the pitch is also controlled via the keyboard, and can be modi-

edbyothercontrolsignals.Dependingonyourmonitoringsystem—andyour

ears—theouterrangesoftheFREQknobmayappeartobeinaudible.

WAVE (WAVEFORM SWITCH)

TwowaveformoptionsareavailableontheWerkstatt.Eachwaveform,orwave-

shape, carries a distinct harmonic content, creating a different sonic signature,

known as timbre.

SAW:ShortforSawtooth,theSawwavelookssimilartothecuttingedgeof

asawblade.TheSawwavecontainsbothevenandoddnumberedharmon-

ics,andcreatesabrightandbuzzysoundbeforeltering.Thestrength—or

level—of each harmonic is the reciprocal of its number in the harmonic series.

PULSE: This waveform is unique in that it only contains the odd numbered

harmonics. The ratio that controls the relative volume of these harmonics

is determined by the Pulse Width. The width of the pulse can be anything

from a wide rectangle to a square to a very narrow rectangle. The thinner

the wave, the more the upper harmonics are accentuated.

PWM (PULSE WIDTH MODULATION)

When the Pulse waveform is selected, the Pulse Width Modulation knob can be

used to determine the shape of the Pulse, thereby changing the timbre of the

wave. With the knob set just a little left of center, the wave will be square, with

a 50% duty cycle. The duty cycle is commonly thought of as the positive por-

tion of the wave. The range of this knob can create a narrow pulse wave with

aduty-cycleofalmostzero,allthewayuptoawiderectangularwavehaving

about a 95% duty-cycle.

NOTE: This knob will not function when the VCO MOD DEST switch is set to

PWM. In this case, the Pulse Width will be controlled by the VCO MOD SOURCE.

The keyboard determines the note

played based on the setting of the

Freq control - these two control inputs

are summed together.