How it works
Press record and hum. The page listens to the pitch of your voice many times a second, finds the nearest note, and draws it on the piano roll as you go, so a melody appears while you're still singing it. Stop, and the notes are tidied to the nearest sixteenth of the tempo you set. Play them back to check, drag a note if the page heard it wrong, then download the MIDI.
It follows one voice at a time: a hum, a whistle, a sung line, a single instrument. Chords and full songs are a different job, and the Mac app does that one: plastic.audio/dot.
Getting a clean take
Hum close to the microphone in a quiet room, with headphones on if the page is playing a click. Sing "doo" or hum with the mouth closed rather than words; consonants confuse pitch tracking. Hold each note for at least a quarter of a beat, and leave a small gap between notes that repeat on the same pitch, or the page hears one long note. If the whole melody comes out an octave off, use the octave buttons: that shift applies to every note at once.
Tempo and timing
Set the tempo before you record so the notes land on the grid; tap it if you don't know it. The click is optional and only you hear it. After recording, the quantise control snaps notes to sixteenths, eighths or nothing, so a loose vocal phrase can stay loose if that's the point.
Download MIDI
The MIDI file holds the notes, their lengths and the tempo, on one track. Drop it onto any instrument in your DAW: a piano, a synth, a bass. It's a melody file, so there's no audio of your voice in it.
