Luminara Six

Six‑Oscillator Software Synthesizer by Skan

1. Introduction

Luminara Six is a polyphonic, browser‑based synthesizer built around six independent oscillators, a flexible filter, an amplitude envelope, three low‑frequency oscillators (LFOs), a modulation matrix, and integrated spatial effects (reverb and delay). It is designed for pads, leads, basses, keys, plucks, ambient textures, and experimental sound design.

This manual describes the user interface, each control, and provides practical tips for creating specific types of sounds.

2. Interface overview

The main interface is divided into the following sections:

• Transport & Presets (top bar)
• Oscillators 1–6
• Filter
• Amp Envelope (ADSR)
• LFOs 1–3
• Mod Matrix
• Master & Space (Master Volume, Reverb, Delay)
• Keys (virtual keyboard)
• Status (Voices and CPU)

3. Transport and preset controls

3.1 Transport

• Play – Starts internal playback where applicable.
• Stop – Stops playback.
• Record – Arms recording of MIDI input if supported by the host environment.

3.2 Status indicators

• Mode: Poly – Indicates that the synthesizer is operating in polyphonic mode.
• MIDI Connected – Confirms that a MIDI device has been detected and is available for input.

3.3 Preset management

The preset system allows quick recall of factory and user patches.

• Preset dropdown – Selects a preset (e.g., “Glass Pad”, “Warm EP”, “Deep Bass”, “Airy Keys”, etc.).
• Save Current – Saves the current patch state as a preset file.
• Load – Loads a previously saved preset file.
• Choose File – Opens a file dialog to select a preset file from disk.

4. Oscillators (Osc 1–6)

Luminara Six provides six independent oscillators. Each oscillator can be configured separately and then mixed to form complex, layered timbres.

4.1 Oscillator controls

4.2 Practical usage

• Subtle detune – Detune multiple oscillators by small amounts for lush, wide pads.
• Wave layering – Combine a sine for body with a saw or triangle for brightness.
• Level balancing – Reduce levels on some oscillators to avoid clipping and maintain headroom.

5. Filter section

The filter shapes the harmonic content of the combined oscillator signal, allowing you to emphasize or remove certain frequency ranges.

Note: A low cutoff with moderate to high resonance is useful for classic sweeping filter effects.

6. Amp envelope (ADSR)

The amplitude envelope defines how the volume of each note evolves over time, from key press to key release.

6.1 Common envelope shapes

• Pad – Long attack, medium to long decay, medium sustain, long release.
• Pluck – Very short attack, short decay, low sustain, short to medium release.
• Lead – Fast attack, medium decay, medium sustain, medium release.
• Bass – Fast attack, short decay, medium sustain, short release.

7. LFOs (1–3)

LFOs (Low‑Frequency Oscillators) are modulation sources used to create periodic changes in parameters such as pitch, filter cutoff, or volume.

7.1 LFO controls

7.2 Typical LFO uses

• Vibrato – LFO → Oscillator pitch (small amount, moderate rate).
• Tremolo – LFO → Master level or amp level (small to medium amount).
• Filter sweeps – LFO → Filter cutoff (slow rate for evolving pads).

8. Modulation matrix

The modulation matrix (Mod Matrix) allows flexible routing of modulation sources to destinations. Each slot defines a source, a destination, and an amount.

8.1 Mod matrix columns

8.2 Example modulation routings

• Slow evolving pad – LFO 1 → Filter Cutoff (small positive amount).
• Rhythmic movement – LFO 2 → Oscillator Level (medium amount, tempo‑like rate).
• Velocity‑sensitive brightness – Velocity → Filter Cutoff (positive amount).

9. Master & Space

The Master & Space section controls the overall output level and the built‑in spatial effects.

Tip: Combine moderate reverb with subtle delay for pads and ambient swells; use lower reverb and tighter delay for leads and plucks.

10. Keys (virtual keyboard)

The Keys section provides a virtual keyboard spanning approximately C3 to C5. Notes can be triggered by clicking on the keys, allowing quick auditioning of sounds without an external MIDI controller.

11. Status panel

The Status section displays real‑time information about the synthesizer engine.

• Voices – Number of currently active voices (notes sounding).
• CPU (approx) – Approximate CPU usage of the synthesizer.

12. MIDI support

Luminara Six supports MIDI input where the browser and environment allow it. When a compatible MIDI device is connected and permission is granted, the “MIDI Connected” indicator will be shown.

• Connect a MIDI keyboard or controller.
• Grant permission if prompted by the browser.
• Play notes and control parameters as configured.

13. Preset workflow

13.1 Saving a preset

1. Design or modify a sound using the available controls.
2. Click Save Current.
3. Follow the browser prompt to save the preset file to your computer.

13.2 Loading a preset

1. Click Choose File and select a compatible preset file.
2. Click Load to apply the selected preset.
3. The interface will update to reflect the loaded patch settings.

14. Sound design tips for specific sounds

The following sections provide suggested settings and approaches for creating sounds similar to the named categories. Values are indicative rather than absolute; adjust by ear to taste.

14.1 Glass Pad (e.g., “Glass Pad”, “Wide Pad”, “Ambient Swell”)

• Oscillators – Use 4–6 oscillators with a mix of triangle and sine waves; add one or two saws at lower level for shimmer.
• Detune – Slight detune (small positive and negative values) across oscillators for width.
• Filter – Low‑pass with moderately high cutoff; add a little resonance for a glassy edge.
• Amp Envelope – Long attack, medium decay, medium sustain, long release.
• LFO – Slow LFO to filter cutoff for gentle movement; optional slow LFO to oscillator level for subtle evolving texture.
• Effects – High reverb mix, moderate delay mix for spacious, floating ambience.

14.2 Warm EP / Vintage Keys (e.g., “Warm EP”, “Vintage Keys”, “Soft Organ”, “Bright Keys”)

• Oscillators – 2–3 oscillators using mainly sine and triangle waves; add a low‑level saw for bite.
• Detune – Very subtle detune for a gentle chorus effect.
• Filter – Medium cutoff, low to moderate resonance to keep the tone warm and rounded.
• Amp Envelope – Fast attack, medium decay, medium sustain, medium release (for EP); for organ‑like sounds, use fast attack and high sustain with shorter release.
• LFO – Optional slow LFO to pitch or level for a slight “wobble” reminiscent of vintage hardware.
• Effects – Moderate reverb; optional short delay for a subtle stereo spread.

14.3 Deep Bass / Thick Bass / Crunch Bass

• Oscillators – 1–3 oscillators; use sine or triangle for sub weight, saw for harmonics.
• Detune – Minimal detune to maintain focus in the low end; more detune for “Thick Bass”.
• Filter – Low‑pass with relatively low cutoff; increase resonance slightly for character.
• Amp Envelope – Fast attack, short decay, medium sustain, short release for tight bass.
• LFO – Optional LFO to filter cutoff for subtle movement; avoid excessive modulation to keep bass solid.
• Effects – Low reverb and delay to preserve clarity; bass typically benefits from a dry or nearly dry signal.

14.4 Airy Keys / Soft Bell / Soft Pluck / Noisy Pluck / Chill Pluck

• Oscillators – Use sine and triangle for bell‑like purity; add a low‑level noise or saw component for “Noisy Pluck”.
• Detune – Very small detune for width; keep it subtle for precise, bell‑like tones.
• Filter – Medium to high cutoff; for softer tones, lower the cutoff slightly and reduce resonance.
• Amp Envelope – Very short attack, short decay, low sustain, medium release for plucks; for bells, use slightly longer decay and release.
• LFO – Optional slow LFO to pitch or level for gentle shimmer; keep amount low.
• Effects – Moderate to high delay mix for repeating chimes; add reverb for spacious, airy character.

14.5 Soft Lead / Crunch Lead / Wide Lead

• Oscillators – 2–4 oscillators with saw and triangle waves; for “Soft Lead”, reduce higher harmonics by lowering saw levels.
• Detune – Moderate detune for “Wide Lead”; minimal detune for more focused leads.
• Filter – Medium to high cutoff; adjust resonance to taste for brightness or edge.
• Amp Envelope – Fast attack, medium decay, medium sustain, medium release.
• LFO – LFO to pitch for vibrato (moderate rate, small amount); optional LFO to filter cutoff for expressive movement.
• Effects – Moderate delay for rhythmic interest; reverb to place the lead in a mix without washing it out.

14.6 Ambient Swell / Wide Pad

• Oscillators – Use many oscillators (4–6) with a mix of waveforms; emphasize triangles and sines for smoothness.
• Detune – Spread detune values across oscillators for a wide stereo impression.
• Filter – Low‑pass with moderate cutoff; automate or modulate cutoff slowly for evolving tone.
• Amp Envelope – Very long attack and release; medium sustain for continuous, swelling textures.
• LFO – Slow LFOs to filter cutoff and oscillator levels for evolving, organic motion.
• Effects – High reverb mix and moderate delay mix for deep, immersive ambience.

15. Technical considerations

• Browser – Use a modern browser for best performance and audio stability.
• CPU usage – High polyphony, many active oscillators, and heavy effects increase CPU load.
• Gain staging – Keep oscillator levels and Master Volume at reasonable values to avoid clipping.

16. Credits

Luminara Six
Design and development: Skan
Six‑oscillator web synthesizer with filter, envelopes, LFOs, modulation matrix, and integrated spatial effects.