Audio to MIDI

Converts uploaded audio into a Standard MIDI File, aiding composers, developers, and researchers to analyze pitches and timing for music projects.

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About This Tool

The tool accepts an audio file and outputs a Standard MIDI File, enabling programmatic access to pitch events and timing data. It supports mono and polyphonic transcription depending on the selected mode.
Conceptually the pipeline decodes audio, extracts pitch tracks, detects onsets, quantizes timing, and maps events to MIDI note-on and note-off with velocities. It then exports a MIDI file with a fixed ticks-per-quarter-note resolution.
Target users include composers integrating transcription into DAWs, game audio teams generating background music, researchers building datasets, and developers embedding MIDI generation in Python workflows.
Unique value lies in its mode options, optional tempo estimation, batch processing capability, and a straightforward backend suitable for automation. Use cases include transcribing riffs, vocal lines, or orchestral phrases for scoring experiments or rapid prototyping.

How to Use

  1. Upload an audio file in WAV, MP3, or FLAC format.
  2. Select transcription mode (polyphonic or monophonic) and optional tempo estimation.
  3. Run the conversion to generate a MIDI file.
  4. Download the MIDI file and import into your DAW or sequencer.
  5. If needed, re-run with adjusted mode or sample rate.
How to use audio to midi converter python

Frequently Asked Questions

Find Quick Answers

What formats are supported for input and output?
Input accepts common audio formats such as WAV, MP3, and FLAC. Output is a Standard MIDI File with a .mid extension compatible with virtually all DAWs and sequencers.
How accurate is the transcription?
Accuracy depends on input material and mode. Monophonic transcription tends to be cleaner, while polyphonic material may introduce approximation in pitch and timing. Complex polyphonies and noisy recordings may require manual editing.
Can I batch convert multiple files?
Yes. The tool supports batch processing by queueing multiple audio files for sequential MIDI export, enabling streamlined workflows for large datasets or project pipelines.
What is the MIDI file compatibility?
The output uses Standard MIDI File 1.0 with 480 ticks per quarter note by default, compatible with major DAWs, notation software, and MIDI hardware keyboards.

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