Best MP3 to MIDI converter: compare the result before you keep it.
The useful test is not a slogan; it is a repeatable comparison against the source. Use the same MP3 fixture, detector settings, output record, and silent control before deciding whether a MIDI file is ready for arranging.
Use one fixed source
Download the public source.mp3 and keep the decode target at mono 11025 Hz PCM. The fixture is a short four-note melody; a dense full mix is a different, untested condition.
Compare the actual MIDI
Run the published experiment script with the public detector, then compare the exported file with results.json.
| Check | Record | Decision boundary |
|---|---|---|
| Pitch | Event count and pitch sequence | Do not call an unmeasured passage accurate |
| Timing | Each start and end window | Compare against the source before arranging |
| Control | Silent-control output | Zero events is the expected silence check |
What makes the comparison useful
The same detector settings, a named source file, and a control recording make the result reproducible. They also show what this test cannot prove: it does not establish full-song accuracy, chord separation, or a universal ranking between tools.
Questions about the best converter test
Does a downloadable MIDI prove the converter is best?
No. It proves an output was produced; the pitch and timing comparison still has to be checked against the source.
Why test silence?
A silent control shows whether the detector returns zero note events for silence. That keeps an empty run from being mistaken for a melody result.
Where can I reproduce this check?
Use the linked source, detector, run script, and results JSON. They are the public evidence chain behind this checklist.