Conversion guide
How audio-to-MIDI conversion works
Audio-to-MIDI conversion analyzes a recording and turns detected pitches and timing into editable MIDI note events. Audio-to-MIDI.io is built for useful first passes: upload a supported recording, review the notes, then correct or export the result.
The input and output
A recording becomes portable note data.
The converter accepts MP3, WAV, FLAC, and OGG files up to 50MB and five minutes. The result is a MIDI file with a browser piano-roll preview. MIDI stores musical events such as pitch, timing, duration, and velocity so you can continue in a DAW or the local MIDI editor.
- Input
- MP3, WAV, FLAC, or OGG audio up to 50MB and five minutes.
- Processing
- The private upload is sent to Replicate Basic Pitch through a temporary signed link.
- Output
- A MIDI file and a read-only note preview that can be opened in the browser editor.
- Retention
- The server source is removed after the provider reaches a terminal state; MIDI results and job records expire within 24 hours.
Three steps
From recording to editable notes.
The workflow keeps the source, generated MIDI, and editing handoff separate so you can check the result before using it elsewhere.
- 01
Upload a clear source
Choose a supported file you own or have permission to process. One prominent part is easier to interpret than a dense mix.
- 02
Wait for transcription
The upload is processed by Replicate Basic Pitch and the generated MIDI is returned through a private result link.
- 03
Review before export
Compare the source with the note preview, remove errors in the browser editor, and export MIDI for your DAW.
Accuracy boundaries
The recording determines the cleanup work.
The service does not promise perfect musical accuracy or studio-ready notation. It is most useful when you want a playable, editable starting point and are willing to review the notes.
Usually clearer
- • One prominent instrument or melody
- • Audible note attacks and limited room noise
- • Dry stems or clean reference takes
More cleanup likely
- • Dense mixes with several competing parts
- • Reverb, clipping, noise, or soft attacks
- • Piano resonance and sustained pedal
Continue the workflow
Convert first, then correct the notes.
Use the converter for a private first pass and the browser MIDI editor for note, timing, controller, and export work. Keep the MIDI file as the editable source and use your DAW for final production.
Common questions
Before you convert
What is audio-to-MIDI conversion?
Audio-to-MIDI conversion analyzes a recording and writes detected pitches and timing into editable MIDI note events. The result is MIDI data, not another audio file or engraved sheet music.
Which recordings give the clearest result?
A dry recording with one prominent instrument, melody, or vocal line and audible note attacks usually gives the model more useful information than a dense mastered mix.
Can it transcribe a complete song?
You can upload a complete song you are allowed to process, but competing instruments, drums, effects, and loudness processing can create extra or missing notes. Treat the result as a draft to edit.
Does the service create sheet music?
No. Audio-to-MIDI.io returns a MIDI file and a browser note preview. Use a notation application if you need engraved sheet music, and review the transcription before exporting it.