Shape the schedule
Choose a duration, set the playhead, and edit beat or carrier values. The curve is the source of truth.
A PRACTICAL FIELD GUIDECompose with time,
Compose with time,
not just a frequency.
Sineward is built around a schedule: frequencies, loudness, and stereo position can change across a session. The playhead connects what you hear, what the top controls show, and what the automation curves contain.
Start with the workflow ↓8.0Hz difference
LEFT EAR196 Hz+RIGHT EAR204 Hz
01 · WORKFLOW
A session in four passes
Start broad, then add motion and texture. You can hear every change immediately and export only when the mix feels settled.
Build the sound bed
Combine the binaural voice with generated noise, an isochronic pulse, field recordings, or your own audio.
Automate the mix
Add layer-volume and pan lanes so ambience can arrive gradually, move, or fade before the session ends.
Save or render
Save editable work as Sineward JSON. Export a compact MP3 when you want a finished listening file.
02 · AUTOMATION
One schedule, two views
The large curve is the complete transition over time. The top controls show the exact value at the current playhead. Move the playhead to inspect another moment; changing a top control edits or creates a point at that moment.
- Playhead control: scrub the progress rail to inspect or edit any time.
- Curve editor: double-click or use Add point, then drag or type exact values.
- Keyboard: arrow keys nudge a selected point; Shift moves time in larger steps; Delete removes it.
03 · SOUND LAYERS
Use texture with intention
Layers support the schedule without hiding it. Begin quietly, use pan sparingly, and leave headroom for the combined mix.
Binaural tone
The core stereo voice. Carrier controls overall pitch; beat controls the difference between ears.
Isochronic pulse
A clearly audible amplitude pulse. It does not require separate left and right channels.
Generated noise
White, pink, brown, and ocean-shaped textures are synthesized locally and loop indefinitely.
Field recordings
Forest, flowing stream, and fireplace recordings are bundled with source and license credits.
Bundled field-recording sources
Forest ambience by nille — public domain · Swale by Ksd5 — CC0 · Dry grass burning by ezwa — public domain. Original recordings are hosted by Wikimedia Commons; Sineward’s Ogg Vorbis copies are loudness-normalized for consistent mixing.
04 · GNAURAL COVERAGE
A modern browser workflow, with familiar depth
Sineward covers the core composition loop established by Gnaural’s Java editor while making file management and audio export browser-native.
CapabilityStatusSineward approach
Binaural tone schedulesSupported
Beat and carrier automation share one playhead-aware editor.
Multiple sound voicesSupported
Tone, isochronic pulse, generated noise, field recordings, and uploaded audio.
Per-voice volume and stereo positionSupported
Every layer has live controls and automation lanes.
Graph point editingSupported
Add, drag, delete, duplicate, copy/paste, precise values, and keyboard nudging.
Undo and redoSupported
Toolbar controls plus Command/Ctrl-Z and redo shortcuts.
Schedule filesSupported
Versioned Sineward JSON plus an allowlisted, on-demand Gnaural Mindstates importer.
Gnaural binaural and noise voicesSupported
Every binaural, pink, white, and brown voice is translated with its authored automation.
Multiple simultaneous Gnaural tonesSupported
Each voice retains independent carrier, beat, mute, and left/right volume envelopes.
Gnaural loops and alternating pulsesSupported
Finite and continuous cycles remain native; regular and alternating isochronic voices retain animated pitch and pulse rates.
Gnaural sample-file voicesPartial
The schedule reference is preserved, but the separately distributed audio file must be supplied before playback.
Audio-file voicesSupported
Browser-decoded files can loop and remain stored locally in IndexedDB.
Audio exportSupported
Progressive local MP3 rendering with automation: 128 kbps on Free and 320 kbps on Pro.
Group point transformsPartial
Duplicate and keyboard movement are available; box selection and time-scaling remain future work.
GnauralNet synchronizationNot planned
Sineward is intentionally a private, local-first instrument.
Coverage was reviewed against Gnaural’s official Java application guide and schedule-format documentation. The compatibility importer remains isolated and does not include Gnaural code or branding.
🎧
Listen comfortably
Use stereo headphones for binaural separation and begin at a low volume. Stop if listening becomes uncomfortable. Do not use Sineward while driving, cycling, operating equipment, or doing anything that requires full attention. Sineward is an audio instrument, not a medical device.
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