Tap to add · drag a note to tune · drag empty space to change speed
Move the speed into the pitch region and listen.
Hear a kick turn into pitch, harmony and a song. Then build your own by touching the graph.
Sound starts only when you choose. You can replay the tour anytime.
Explore is a playable instrument. Tap empty space in the circular graph to add a note, then drag it outward for a higher pitch or inward for a slower rhythm. Drag around the center to shift its rhythmic phase. Drag empty space up or down to change the speed of all notes together while preserving their ratios.
Select a note to mute or remove it, or use Clear to start from silence. You can combine up to six independent notes. The selected-note slider and arrow keys provide precise control, and Snap tunes it to the nearest piano note. The frequency ruler also plays: tap or drag it to tune the selected note.
Press Play, then drag Speed from 2 hits per second into the pitch region. The same synthesized kick is repeated at every speed. It is never replaced by a separate sine-wave instrument.
Fifth: 2 and 3 hits per cycle become 110 and 165 Hz: a 3:2 perfect fifth.
Chord: 4, 5 and 6 hits become 110, 137.5 and 165 Hz: a just major triad.
Song: an original Am–F–C–G loop combines a slow beat, bass, chords and melody, all using the same kick. Toggle the four layers to hear them separately.
Audio mode plays a local file through the visualization. Choose a start point and a clip length of up to 30 seconds. Nothing is uploaded. The graph shows the mixed waveform and strong frequency bands, not an automatic transcription of notes or isolated instruments.
At low speeds, the needle, polygon points and ripples mark actual pulse timing. As the rhythm becomes too fast to count, the display blends into a polar waveform. Song mode separates the layers into luminous rings. The frequency ruler is logarithmic; the small keyboard highlights nearby equal-tempered notes, while the chord ratios remain exact.
The guided tour moves from rhythm to pitch, harmony and a song. Use its timeline to revisit any section. Switching to Explore keeps the current notes so you can reshape them, add more or remove them. Editing the graph leaves the guided demonstration and puts you in control.
About 20 Hz is an approximate perceptual transition, not a universal boundary. The instrument uses a synthesized kick. Audio clips visualize the recording directly. Phone speakers may not reproduce the lowest pitches. Start quietly.