Turn a recording into a note-by-note MIDI sketch. Your file stays right here in this browser.
Choose MP3, WAV, M4A, AAC, OGG or AIFF audio, or MP4, MOV, WebM, M4V, AVI, WMV, MKV or FLV video. This local page accepts files up to 100 MB and 120 seconds. The browser must support the codec inside the file; video audio is captured as it plays, in real time.
Fieldnote decodes audio on your device, then tracks fundamentals from roughly 65–1,000 Hz (C2–B5) with a lightweight autocorrelation method. It writes a standard MIDI file with note names and timing. No media is sent to a server.
Results are strongest for a clean, single-note melody. Chords, drums, overlapping instruments, heavy effects and noisy recordings can confuse pitch tracking. This is a monophonic transcription sketch, not a studio-grade arrangement.
Yes. Select an MP4, MOV, WebM or M4V video with an audio track. The video is played locally so its audio can be analyzed; a 20-second clip takes at least 20 seconds to process.
This page converts files you have on your device. It does not fetch YouTube links. If you have permission to use a recording, choose its audio or video file here.