Studio-electronics Boomstar Manual de usuario descargar pdf (Pagina 17)

Studio Electronics Boomstar Manual 13 Panels

5.2.4 VCO 2 - Voltage Controlled Oscillator 1

word about the

Oscillators as a whole:

OscillatorsaretheAdam(andEve)ofAnalogsynthesis.Anoscillatorproducesperiodicorregularlyrepeating

waveforms, e.g., pitched sounds. The Oscillator’s tuning controls alter the frequency or pitch of the oscillators,

whereas its wave shape selectors determine the harmonic spectrum of the signal, its basic timbre, or tone

coloration.WehereatStudioElectronicsthinkVoltageControlledOscillatorsstillsoundbest.

What do these tone colors sound like, you wonder?

Triangle: Fluty, with odd harmonics like the square wave, but its amplitude is quite

weak in comparison to its fundamental. The Triangle possesses more brilliance

than the similarly shaped sine wave.

Sine: The most elemental waveform with its smooth fundamental and limited

harmonics—perfect for sub waveforms, simple “worm” leads, and enriching and

thickening the sound.

Sawtooth: Bright, buzzy, brassy—the richest harmonically—features a very

smoothtonewhenalow-passlterisengaged;itcontainsbothevenandodd

harmonics of the fundamental frequency.

Square: In its even state, it is a full bouncy sound—a bass beast for many. Near the

edges of its duty cycle, or width, It becomes a “clavi,” reedy, nasal sound, with odd

harmonics only.

The

RANGE

switch selects the octave:

(lowfrequency—clicksandticksbelowtheaudiblerangeforhumans;clicks

canmakeforveryinterestingrhythmicpulsesandsequences),

32’

16’

8’

4’

2’

. The

setting of Oscillator 2 can be

employedasaveryexiblemodulator.Thesefootpitchnumberscomefromthelengthsoforganpipesinthegreat

cathedrals and churches of old—half the length equals double the pitch.

The

SYNC

switch locks the pitch of Oscillator 2 to follow the pitch of Oscillator 1 in hard synchronization, so that OSC

2 will tune only to the harmonic frequencies of Oscillator 1. Intermediate frequencies of Oscillator 2 will produce

unusual, “metallic” wave shapes and timbres; both Oscillators sharing the same base frequency makes all of this

possible.

The

SUB LEVEL

switchselectsahalforfullvolumeoctavedownSquarewavewithacenteroposition—acommon

feature of the Boomstar enabling quick escapes from more complex programming settings.

The

WAVE MIX

switch selects single waveform settings or blending combinations of Triangle or Saw with Sine or

Squarewaveforms.Thecenterpositionisnull,oro.

The

PULSE WIDTH

knob sets the width of the Square waveform, ranging from wide, square rectangular forms to

narrow, nasally tall skyscraper-like shapes. A classic Square wave dials in a little left of the 12 o’clock knob setting—

for that wonderfully warm and yet hollowed-out rubbery tone.

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Studio-electronics Boomstar Manual de usuario Pagina 17

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