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Alphatron Oscillion VST VST3 Audio Unit Polyphonic Subtractive Synthesizer: Leads, Pads, Keys, Basses, Atmos, Percussion, Soundscapes, Sound Effects for Windows and macOS (64-bit)

Alphatron Oscillion is a polyphonic subtractive synthesizer to produce a vast array of sounds, utilizing three main signal modules: frequency (voltage-controlled oscillator VCO), timbre (voltage-controlled filter VCF) and amplitude (voltage-controlled amplifier VCA).

Four VCOs initiate the sound waveform and control its frequency. It also determines the initial timbre by the waveform option selected (sawtooth or square). The VCF module shapes the timbre via a low-pass filter with cutoff and resonance parameters controlled by an envelope generator. The amplitude of the sound is shaped by the VCA envelope.

It generates iconic vintage synthesizer sounds with distinctive pads, peculiar keys, punchy basses, sparkle leads, creepy effects, charming ambient soundscapes or unearthly and otherworldly atmospheres. Suitable for many genres and styles of music and pliability to custom design over a diverse sonic palette.


• Voltage Controlled Oscillators (VCOs). They will generate the initial sound signal with four voltage controlled oscillators (VCO1, VCO2, VCO3, VCO4), with the following parameters:
o Fine. A fine-tuning knob that tunes the VCOs by a semitone. Gives a wide array of frequencies between the oscillators.
o Octave. The knob to specify octaves above or below the current octave of the VCO by dialing in a range between -2 to +3 octaves.
o Shape. Morphs between sawtooth and square non-sinusoidal waveforms. The sawtooth waveform contains all harmonics of the fundamental pitch of the waveform. The square waveform contains just the odd harmonics.
o Speed. Defines the frequency or speed of the oscillator. Turn the knob clockwise to increase the rate or counterclockwise to decrease the rate.
o Gain. This parameter is used to adjust the modulation gain level of each VCO.

• Voltage Controlled Oscillator (VCO) Envelope. Changes the produced frequency. It can be used to modify the attack phase or to create special effect sounds.

• Voltage Controlled Amplifier (VCA) Envelope. Controls the volume or amplitude of the sound with independent control over each ADSR stage (Attack, Decay, Sustain, Release) over the VCA amplifier that varies its gain depending on a control voltage. The 'Level' slider determines the magnitude of the action of the envelope.

• Voltage Controlled Filter (VCF). A low-pass filter that lets the lower frequencies or harmonics pass unchanged, while it attenuates or reduces the strength of the higher frequencies, offering a simple and effective tone control to shape and color the sound source.
o Cutoff. Controls the low-pass filter cutoff frequency. Determines where the signal is cut off.
o Resonance. Controls the low-pass filter resonance. Emphasize or suppress portions of the signal above or below the defined cutoff frequency.

• Voltage Controlled Filter (VCF) Envelope. This section provides control of the filter cutoff frequency over time, with independent control over each ADSR stage (Attack, Decay, Sustain, Release). The 'Level' slider determines the magnitude of the action of the ADSR envelope on the frequency and response of the low-pass filter.

• Chorus. A 4-voice stereo chorus effect that imparts richness and character to the sound by adding multiple short delays with a slight amount of feedback, making each sound distinct from the original. Parameters includes a toggle switch on/off, stereo spread, amplitude and depth controls.

• Delay. A stereo delay with time and feedback parameters that stores the input signal and plays it back after a certain amount of time, creating from a subtle echo to a pronounced blending of previous sounds with new sounds.

• Reverb. Integrated reverberation module with a switch indicator on/off, size and width room controls.

• Pitch Bend. A virtual wheel to vary the frequency or pitch of the oscillators (VCOs) in a continuously variable manner.

• Keyboard. The virtual keyboard lets you listen to the synthesizer sounds without the need for an external master MIDI keyboard.

• Preset Manager. Browser to load and save presets and banks.

• MIDI automation.

• 50 internal presets:

01 ATMO Asynchronous Cacophony
02 ATMO Chaotic Environment
03 ATMO Ecosystem Invaders
04 ATMO Gliding Asteroids
05 ATMO Oneiric Ambient
06 ATMO Psychedelia
07 BASS Fuzzy Circuit
08 BASS Hollow Line
09 BASS Oscillating Resonance
10 BASS Rubbery Rebound
11 BASS SH101 Roygbiv
12 BASS Trembling Glide
13 KEY Acid Funk
14 KEY Crazy Diamond
15 KEY Daydream
16 KEY Electric Harpsichord
17 KEY Electric Piano
18 KEY Fantasyland
19 KEY Glowing Amplitude
20 KEY Percussive Organ
21 KEY Scintillating Boost
22 KEY Vintage Organ
23 LEAD Brassy Essence
24 LEAD Dimensional Sawtooth
25 LEAD Fusion Waves
26 LEAD Hoover Apocalypse
27 LEAD Hoover Dominator
28 LEAD Hoover Gabber
29 LEAD Hoover Gritty
30 LEAD Hoover Juno Sway
31 LEAD Square Quantum
32 LEAD Trance Formant
33 LEAD Wavering Spectrum
34 LEAD Wobbly Pressure
35 PAD Dystopian Worldview
36 PAD Flanging In Heaven
37 PAD Idyllic Momentum
38 PAD Immenseness
39 PAD Relaxed Ambience
40 PAD Soundscape Vibes
41 PAD Spatial Motion
42 PAD Stellar Choir
43 PERC Mallet Percussion
44 PERC Tubular Chimes
45 SFX Catatonic Voices
46 SFX Concatenated Creatures
47 SFX Crescendo Horror
48 SFX Dark Signals
49 SFX Gloomy Lament
50 SFX Incorporeal Beings.

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