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REQ: Syntheway Alphatron Oscillion screenshot
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. Available as a plugin in VST and VST3 64 bit versions for Windows, as well as in Audio Unit for macOS.


Voltage Controlled Oscillators (VCOs). They will generate the initial sound signal with four voltage controlled oscillators (VCO1, VCO2, VCO3, VCO4), with the following parameters:

路 Fine. A fine-tuning knob that tunes the VCOs by a semitone. Gives a wide array of frequencies between the oscillators.

路 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.

路 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.

路 Speed. Defines the frequency or speed of the oscillator. Turn the knob clockwise to increase the rate or counterclockwise to decrease the rate.

路 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 鈥楲evel鈥 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.

路 Cutoff. Controls the low-pass filter cutoff frequency. Determines where the signal is cut off.

路 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 鈥楲evel鈥 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.

路 Toggle switch On/Off. A switch indicator to turn ON/OFF the module. Press the toggle to activate the effect, the switch will light, and chorus will be applied to the sound. To inactivate the effect, press again and it will turn off.

路 Stereo Spread. Adjusts the stereo spreading of the chorus voices. For maximum stereo spread, fully clockwise rotation; for a monophonic chorus, simply set to zero.

路 Amplitude. Adjusts the presence of the chorus. Turn it clockwise to increase it or counterclockwise to decrease it.

路 Depth. The slider sets the balance between the unprocessed (dry) signal and the processed (wet) signal that will be blended.

Delay. A stereo delay 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. Parameters include:

路 Time. Modulation to vary the delay time dynamically.

路 Feedback. Regeneration of delay.

Reverb. Integrated reverberation module.

路 Toggle switch On/Off. A switch to turn on/off the unit. Press the toggle to activate the effect, the switch will light, and reverb will be applied to the sound. To inactivate the effect, press again and it will turn off.

路 Size. The knob provides a spaciousness and depth to simulate the sound reflections from walls, floors and ceilings following a sound created in an acoustically reflective environment. Small rooms can be modeled as well as large spaces.

路 Width. This knob adjusts the stereo separation of the wet reverb signal.

Pitch Bend. A virtual wheel to vary the frequency or pitch of the oscillators (VCOs) in a continuously variable manner. Bend wheel upward raises the pitch and moving it downward lowers the pitch. It will automatically return to its initial position when released.

Keyboard. The virtual keyboard lets you listen to the synthesizer sounds without the need for an external master MIDI keyboard. Just click on a virtual key to hear the corresponding sound.

Hint property. Tooltip when the mouse is over a control. You can mouse over any of the controls anywhere in Phasewaver and this will display a short description of what that control does.

MIDI automation. Implementation of MIDI Continuous Controller parameters for use with external hardware control via DAW.

Preset Manager. 'Browser' to load and save presets and banks, enabling to export to *.fxp (VST2 Preset), *.fxb (VST2 Bank), *.vstpreset (VST3 Preset), *.aupreset (Audio Unit Preset) plus two generic formats (plain text): the *.xmlpreset (XML Preset) and the *.xmlbank (XML Bank), providing cross-platform presets/banks. This allows to control over the loading and saving of presets from disk as well as sharing presets between different plugin formats using the generic *.xmlpreset (XML Preset) and the *.xmlbank (XML Bank).

50 internal presets (Pre-programmed sounds) categorized by type: ATMO (6), BASS (6), KEY (10), LEAD (12), PAD (8), PERC (2) and SFX (6) with an ultra-flexible sound shaping capability to create diverse electronic sounds.

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