Gesture Synth

Gesture Synth is a free, online gesture synthesizer that transforms hand movements into expressive musical control using just a webcam and your browser. Designed for musicians, educators, and curious tinkerers, the platform leverages MediaPipe's hand tracking and Web Audio synthesis to let users shape harmony, voicing, octave, volume, and filter in real time without any downloads, accounts, or specialized hardware. All processing stays local, ensuring privacy—camera feeds, microphone audio, and generated recordings never leave your device. With 12 keys and three synth voices, users can explore chord progressions, practice voicings, or capture short MP4 performances directly from the browser. The intuitive interface includes a tutorial and visual feedback to guide beginners through creating their first chord in under two minutes. Whether you're sketching musical ideas, teaching music theory, or experimenting with gesture-based performance, Gesture Synth offers a accessible, private, and innovative way to make music from anywhere with an internet connection.