How it works
From each voice we measure the average pitch (fundamental frequency), the brightness of the tone (spectral centroid) and how much the pitch moves. Pitch sets the hue, brightness the lightness and pitch range the saturation of each voice color. The distance between your two pitches becomes a musical interval, such as a perfect fifth, a major third or an octave, which scores the harmony; tone balance and rhythm complete the match score.
Play with a friend far away
Record your voice, then tap Send to a friend. The link carries only colors and numbers, never the recording. When your friend opens it and records, your match appears right away.