4.5 VOLT Mini

VOLT Mini is a single-oscillator virtual analog synthesizer designed for fast and effective sound creation. It uses a subtractive synthesis engine to produce classic electronic sounds.

Top bar controls

• Simple / Advanced: Toggles between the basic knob-based view and the detailed slider-based modulation view.
• Global Solo: Turns the synth into a solo instrument that plays only one note at a time (monophonic). This is ideal for basslines and lead parts.
• Glide: Adjusts the "pitch slide" time, determines how quickly the sound slides from one note to the next.

OSC A (Simple View) 

• Waveform Icons: Selects the fundamental sound shape: Sine, Triangle, Sawtooth, Square, or Noise.
• Octave: Moves the pitch up or down in 12-semitone jumps.
• Coarse: Moves the pitch up or down in semitone steps.
• Shape: Morphs the geometry of the waveform. For example, on a Sine wave, increasing this makes the sound more like a Sawtooth wave.
• Quality: Adjusts the spectral detail and digital clarity of the oscillator.
• Unison: Layers multiple internal copies of the sound to create a thicker effect.
• Detune: Changes the pitch distance between the layered unison voices.
• Stereo: Spreads the unison voices across the left and right speakers.
• Mix: Sets the output volume level of the oscillator.
• Waveform Window: Displays a real-time visual of the resulting audio wave shape.

OSC A (Advanced View) 

• Oscillator Sliders: This section features the same controls found in the Simple view (Octave, Coarse, Shape, Quality, Unison, Detune, Stereo, Mix), but represents them as sliders for more precise adjustment. Also, additional parameters available in Advanced View:
• Fine: Adjusts the pitch in micro-increments (Cents) for very subtle tuning.
• Gain: Sets the internal drive or "thickness" of the oscillator signal.
• Pan: Positions the oscillator sound specifically to the left or right in the stereo field.
• Envelope Graph: A visual ADSR (Attack, Decay, Sustain, Release) window used to shape how the filter brightness moves over time. You can change the shape by dragging the dots directly on the graph, or by clicking and dragging up/down on the millisecond (ms) and decimal numbers below the graph for more precise control.
• Modulation Sliders (Pitch, Shape, Detune, Level): These four sliders determine how much the Envelope Graph moves those specific parameters.
• Velocity Slider: Sets how sensitive the envelope modulation is to the force used when playing a MIDI note.
• Oscillator LFO Section: A Low Frequency Oscillator that adds steady, pulsing movement to the sound. ▪ LFO Mode: Sets behavior to Free (runs constantly), Retrigger (restarts on every new note), or Oneshot (plays through its cycle only once). ▪ LFO Waveforms: Selects the movement shape (Sine, Triangle, Square, Sawtooth, or Random). ▪ Rate / Amp / Delay: Controls the speed of the wobble, the intensity of the wobble, and the time before the wobble starts. ▪ Targets (Pitch, Shape, Gain, Pan): Four sliders that set exactly how much the LFO wobbles those specific oscillator settings.

FILTER Tab 

• Filter Type Dropdown: Selects the mathematical "shape" used to cut frequencies. ▪ LPF12 (Low Pass): Passes frequencies below the cutoff point. ▪ HPF12 (High Pass): Passes frequencies above the cutoff point. ▪ BPF12 (Band Pass): Passes a narrow range of frequencies centered on the cutoff point.
• FC (Filter Cutoff): Sets the frequency where the filter starts cutting the sound.
• Q (Resonance): Boosts the frequencies at the cutoff point, adding a ringing or "resonant" quality to the sound.
• Drive: Adds harmonic warmth and analog-style saturation to the filter.
• Filter LFO & Envelope: Functions exactly like the LFO and Envelope sections in the Advanced Oscillator view, but applies the movement to the Cutoff frequency instead of the pitch.

AMP Tab 

• Level: Sets the final output volume of the instrument.
• Amplitude LFO & Envelope: Functions exactly like the modulation sections in the Oscillator view, but applies the movement to the final volume (loudness) of the synth.