src - hands 0 cursors 0 auth filtered 0 fps det -ms in - ----

Performance is low. Detection is falling behind the target.

Switch to Essential

Keep current

Tune manually

Telemetry

waiting for frames

Render

Detector

Cadence

FPS sparkline-

Detector ms-

provider - drops -

handpiano.com

HandPiano

Omega v512 Alpha · v512.3-alpha feedback build · Quick first, Tune later, Advanced for WIP tuning and evidence

Quick

Tune

Advanced

Controls Ready to start

Start camera

Enable audio

Enter fullscreen

Languagedevice local

Language is saved on this device.

Start mode30-second setup

Balanced is recommended. Essential lowers load. Pro raises quality. Custom opens tuning.

Runtime modedevice local

Runtime

Main GPU requested; active provider pending.

Device remembered

Device default: Main GPU.

Change runtimeAuto check available

Main GPU

Worker CPU

Main CPU

Worker GPU

Auto check

Reset runtime

Reset all defaults

Instrumentfirst class

Instrument: Grand Piano

Statusfeel + debug

Cursor feel

Balanced

Debug panel

Open Tune

Camera & performancevideo + detector

Cursor smoothing & feelstable | balanced | responsive

Hands & trackinghands + confidence

Piano & soundkeys + instruments

Visuals and stage polish

Runtime Matrixdevice evidence

Profileslocal browser

Name

Saved

Save

Load

Delete

Export JSON

Import JSON

Local profiles plus manual JSON export/import. Account/cloud profile sync is parked.

Diagnostics, witness, and raw evidence

v512.3-alpha quick/tune/advanced drawer contract from v511.9 runtime selector baseline - alpha feedback build, WIP tuning disclosed, defaults pinned in settings_profiles.v512.json. Seams: window.HandPiano.inject*

Telemetry windowdebug

Corner telemetry

HUD FPS trace

Debug-only readout. It observes `window.HandPiano.getPerfSnapshot()` and has no detector, piano, or note authority.

Witnessruntime snapshot

Device label

Trial notes

Copy snapshot JSON

Download snapshot JSON

Use after a live test. This is evidence for the witness receipt, not a witness by itself.

handpiano.com · Support on Ko-fi

Start with a preset. Custom reveals deeper controls only when you ask for them.

Cursor smoothing3 presets + Custom

Authority

raw

filtered

look

One Euro min cutoff

One Euro beta

Lookahead ms

Stickiness (release ms)

Coast ms

Hand Tracking3 presets + Custom

Max hands

Cursors / hand

Cursor size

Min confidence

Enter confidence

Easy

Default

Strict

Continue confidence

Forgive

Default

Strict

Detect conf

Presence conf

Forgive

Default

Strict

Track conf

Piano bar3 presets + Custom

Key count (octaves)

Start MIDI

Piano bar profile

Essential

Balanced

Pro

Piano width

Bar height

Piano opacity

Note labels

Strike depth

Vel sensitivity

Min velocity

Strike response3 presets + custom

Velocity controls loudness, not whether a key triggers. Soft Touch keeps wrist-stable finger taps audible.

Velocity floor

Dynamic range

Response curve

Trigger threshold

AudioDefault + Custom

Sound pack

Volume

Sustain ms

Performance3 presets + Custom

Essential: 320x240 detector input, 1H1F. Balanced: 480x360 detector input, 2H5F. Pro: 640x480 detector input, 2H5F. Runtime is separate: Main GPU is first-run default, with Worker CPU/Main CPU/Worker GPU available per device.

Detector input

320x240 Speed

480x360 Default

640x480 Quality

Detector cadence

Auto

Cadence fine tune

Camera request FPS

Provider path

Worker Smooth

Main Thread Trial

Detector delegate

CPU Stable

GPU Fast Trial

HUD FPS trace

Telemetry: start camera or MP4 to see actual track, detector input, provider path, delegate, detector ms, cadence, and drop rate.

v512 keeps latest-frame-only worker detection for Worker Smooth. The witness snapshot receipts detector input, provider path, delegate, cadence, drop rate, and actual camera track settings.

Runtime mode testAuto + 4 manual

Pick a mode and test it live. Auto runs a bounded local probe and recommends a stable mode; Use recommended mode applies it deliberately.

Runtime mode

Auto check

Main GPU

Main CPU

Worker GPU

Worker CPU

Current

Worker CPU requested; active provider pending.

Fallback

None.

Live stats

init -ms, fps -, frame -ms, detector -ms, skipped 0.

Run device check

Use recommended mode

Diagnostics

Start camera first. The check runs locally, cycles Worker/Main Thread and CPU/GPU, then restores your current mode.

Recommendation: Main GPU is the first-run alpha default. Run device check to compare modes before applying a change.

Cursor overlay3 presets + Custom

Cursor visual

Cursor color

Piano color

UI accent

Effect glow

Show camera layer

Show controls

Watermark

Show landmarks

Show DTO debug

Sequence is default. Monochrome is fastest. Pulse adds light state feedback. Showcase stays custom-only for demos.

Parked for FOSS integration (not hand-coded): video recording tool + loop tool.

HandPiano Omega v512 Alpha

Start camera and audio, keep Balanced, pick an instrument, and play. This is an Omega v512 Alpha feedback build; Tune only if it feels off.

v512.3-alpha · WIP tuning · local device preferences

Enable camera & play

handpiano.com · Privacy · Support · Limits · Witness

or run a no-camera synthetic demo