Use Stable Hand Positions for Gesture Synth

Start from a Neutral, Camera-Visible Position

Face the camera squarely and let the shoulders stay relaxed. Hold the hands slightly below shoulder height with a small horizontal gap between them. Keep each wrist in frame; a detector may see fingertips but lose the hand identity when the wrist repeatedly exits the image.

Use a plain background and soft front light. Avoid a bright window behind you, tight sleeves that merge with the background and positions where one palm covers the other. On a phone, use landscape orientation and a stand rather than trying to hold the device while playing.

• Keep elbows comfortable instead of lifting the shoulders.
• Leave space around every fingertip at the edge of the frame.
• Turn the palms enough for finger separation to be visible.
• Stop and reset when the left and right labels swap repeatedly.

Form Left-Hand Degree and Chord-World Positions

The left hand selects degrees I through V with one to five raised fingers. Degree VI uses index and little fingers; degree VII adds the thumb. Keep unused fingers folded clearly enough that the silhouette does not look like a second raised finger.

Wrist tilt changes the major or minor world. Practise the finger count with a neutral wrist first, then add only the smallest tilt that changes the world indicator reliably. Large rotations can hide fingers, alter lighting and cause the detector to lose the hand.

Open the full left-hand control map → · Review degree and chord-world theory →

Hold Right-Hand Chord, Volume and Octave Positions

The right-hand finger shape selects a triad, inversion or seventh quality. Height controls volume, wrist angle controls filter tone and the thumb can request the lower octave. Because these controls share one hand, change one property at a time while learning.

Choose a middle height where the instrument is audible but not loud. Hold the wrist near neutral, form the finger quality and confirm the chord label. Add filter tilt or the octave thumb only after that label is stable. This sequence makes errors easier to diagnose.

Move Between Positions Without Losing Tracking

Pause briefly after each change. For a chord transition, set the next left-hand degree first, then form the right-hand quality and finally adjust height or tone. Smaller paths give the smoothing logic time to settle and keep one hand from crossing in front of the other.

If tracking becomes unstable, lower the hands, return to the neutral position and rebuild the pose. Do not compensate with faster or larger movement. Enable low-performance mode only when device load is the problem; it cannot fix a hand that is outside the frame or hidden.

Set up the webcam and lighting → · Reduce hand-tracking lag →

Use Comfortable Practice Boundaries

GestureSynth is a browser instrument, not a medical, ergonomic or rehabilitation system. Use a comfortable range, keep playback volume moderate and take a break if the shoulders, wrists or fingers feel tired. A camera should adapt to your available space; you should not force a painful pose to satisfy the detector.

Short, accurate repetitions are more useful than holding a tense shape for a long time. The practice overlay needs only a brief stable hold. If a required gesture is not comfortable or possible, skip it and use another interface rather than treating the site as professional physical guidance.

Follow a short practice routine → · Read current one-hand limits →