Audio to MIDI Converter

About Audio to MIDI Converter

This online tool converts audio files to MIDI format by detecting pitches and notes in the audio. It uses advanced pitch detection algorithms to analyze your audio and create a MIDI file that you can use in any music production software.

What audio formats are supported?

All common audio formats are supported including MP3, WAV, OGG, AAC, M4A, FLAC, OPUS, and more. You can also use video files (MP4, MKV, etc.) - the audio track will be extracted automatically.

What type of audio works best?

This tool works best with monophonic audio - meaning single melody lines like vocals, flute, violin, or any solo instrument playing one note at a time. Complex polyphonic audio (like full band recordings or piano with chords) may not convert accurately because multiple simultaneous notes are difficult to separate.

How accurate is the conversion?

Accuracy depends on the audio quality and complexity. Clean, isolated recordings with clear pitches will produce the best results. Background noise, reverb, or overlapping sounds can reduce accuracy. You can adjust the sensitivity and minimum note duration settings to improve results for your specific audio.

What is detection sensitivity?

Sensitivity controls how quiet a sound needs to be before it's detected as a note. Lower sensitivity will detect quieter notes but may also pick up noise. Higher sensitivity will only detect louder, clearer notes. Adjust based on your audio quality.

What is minimum note duration?

This setting filters out very short notes that may be artifacts or noise. If you're getting too many false notes, increase this value. If you're missing quick notes (like grace notes), decrease it.

How do I use the MIDI file?

The downloaded .mid file can be opened in any Digital Audio Workstation (DAW) like FL Studio, Ableton Live, Logic Pro, GarageBand, Cubase, etc. You can then edit the notes, change the instrument, quantize the timing, or use it as a starting point for your music production.

What is the Piano Roll?

The piano roll is a visual representation of the detected notes over time. The vertical axis shows pitch (musical notes), and the horizontal axis shows time. Each colored rectangle represents a detected note. You can use the zoom controls to see more detail.

Why is my conversion inaccurate?

Common reasons for inaccurate conversion include: polyphonic audio (multiple notes at once), background noise, heavy reverb or effects, very fast passages, or audio outside the selected pitch range. Try adjusting the settings or using cleaner source audio.

Is my audio file uploaded to a server?

No! All processing happens directly in your browser using Web Audio API. Your audio file never leaves your device, ensuring complete privacy and faster processing.

What is the pitch range setting?

The pitch range defines the minimum and maximum frequencies to detect. For vocals, C2-C6 usually works well. For bass instruments, try C1-C4. For higher instruments like violin, C3-C7 might be better. Setting the correct range improves accuracy and speed.

What is velocity in MIDI?

Velocity represents how hard a note is played, affecting its volume. In Dynamic mode, velocity is calculated from the audio volume. In Fixed mode, all notes have the same velocity. Dynamic mode is more expressive but may vary more.

Can I convert singing to MIDI?

Yes! Vocal melodies work great with this tool since singing is typically monophonic. For best results, use a clean vocal recording without background music or heavy effects.