Audio → MIDI

Audio to MIDI Converter

How do I get an audio-to-MIDI result into Logic Pro?

The short answer: the file this converter gives you is a Standard MIDI File (format 1) that Logic Pro opens without any conversion. Drag the .mid onto a Software Instrument track in the Tracks area, or choose File › Import › MIDI File. Logic turns it into a MIDI region on that track and reads the tempo from the file. The part that surprises people: the file carries no sound and no instrument, so any audio you hear comes from whatever instrument Logic put on the track — usually a default patch — not from the file itself. If you import onto an existing track, the region plays through that track's instrument. The rest of this page is the few fixes worth making in Logic afterward.

What the file actually is (and what it is not)

The converter writes a normal .mid — a Standard MIDI File — so Logic Pro treats it exactly like any MIDI you export from another project. Knowing what is inside saves you the confusion of an import that "worked" but sounds wrong. Here is exactly what the converter packs in and what it leaves out:

What this converter's .mid contains, and how Logic Pro reacts to each part on import.
Part of the .midWhat it holdsWhat happens in Logic Pro
NotesPitch, start, end and velocity, grouped into one channelLands as note events inside a new MIDI region on the track
TempoThe BPM you dialled in before convertingLogic reads it and can adopt it as the project tempo
VelocityEstimated from how loud each note was, capped at 127Shows as note velocities — often flat, see below
InstrumentNone — no program-change, no patch nameSound comes from Logic's default patch (new track) or the track's existing instrument
Key / chord labelsNoneNothing to adopt; you name the part yourself

Two of those rows are the whole reason this page exists: there is no instrument, and any sound is Logic's choice, not the converter's. Everything else — the notes, the timing, the tempo — comes across cleanly.

The import, step by step

Both paths below put the same notes onto a track. Pick whichever fits how you work:

  1. Grab the file. On the converter result, click Download .mid. Keep the .csv too — it is your note-by-note receipt if a note ever looks wrong later.
  2. Drag it onto a Software Instrument track. Drop the .mid onto an existing Software Instrument track in the Tracks area, or into empty space so Logic makes a new one. Logic creates a MIDI region containing the notes.
  3. Or use the menu. File › Import › MIDI File, select your .mid, and Logic builds the region. If your project tempo differs from the file's, Logic offers to adopt the MIDI's tempo.
  4. Check the instrument. This is the step the others skip (see the next section). A MIDI region needs an instrument on its track to make sound, and what you hear is whatever patch the track is carrying.

The whole thing is a drag or a menu pick. No rewrapping, no format dialog — a Standard MIDI File is a Standard MIDI File.

Audio file Convert in browser .mid + .csv Logic: Import MIDI File Software Instr. track Hear & edit From a recording to a playable Logic region in one drag — the only sound you hear is the patch on the track.

Why the sound you hear is Logic's, not the file's

You imported the file, the region is full of notes, you hit play — and in Logic you will often hear something. That is expected, but it is not the file talking. A MIDI file stores instructions, not audio, and this converter writes none of the instrument information that would tell Logic which sound to play the notes with. What you hear is Logic's default software instrument on a freshly created track, or — if you imported onto a track you already had — that track's existing instrument.

If the patch is not the sound you wanted, that is easy to change:

Rule of thumb: if the region shows notes but the sound is a piano when you wanted a synth, nothing is broken — the track is playing its default patch. Open the Library and pick the instrument; the notes are fine, they just had a default voice.

If you converted in Polyphonic mode and the part is a chord, a polyphonic instrument is what you want; if it was a single line, even a simple patch is enough. The difference between the two modes — and what each one sends to the region — is spelled out in Mono vs poly: what each detection mode misses.

Mono vs poly: what actually lands in the region

The converter has two detection modes, and they land differently in Logic Pro:

Neither mode writes separate channels per instrument — the converter sums to one channel, so everything you converted sits in the single region Logic created. If you converted a mix and want the bass on its own lane, you will be splitting notes by hand after the import. If you are deciding between Logic's own Flex Pitch capture and exporting to a separate converter, the trade-offs are laid out in Logic Pro audio to MIDI: what the built-in capture can and cannot hold.

What to fix in Logic afterward

The import is faithful, but the converter's output is a raw export, not a finished take. Three things are worth touching inside Logic Pro:

Velocity is flat by design

Velocity here is derived from loudness and capped at 127, so a converted phrase often comes in with little dynamic shape — every note near the same value. That is normal for a machine reading, not a performance. In Logic you can draw velocity variation in the Piano Roll's Velocity lane, or use the Humanize MIDI plug-in / Transform set; the broader routine is in Why converted MIDI sounds robotic (and how to humanize it) before you even open the DAW.

Timing may want quantizing

The notes sit where the audio placed them, which is not always on the grid. Logic's Quantize control (in the Region inspector or the Piano Roll's Q parameter) will line them up; just remember that aggressive quantizing hides the human timing that was in the original. If the part needs cleanup first — ghost notes, overlaps, a wrong low end — do it on the converter side: How to clean up a converted MIDI before you use it walks the five passes that turn a raw export into a usable part.

A note on tempo

The BPM you set in the converter is written into the file's tempo map, so Logic can adopt it on import. If you converted with the default 120 and the song is really 92, either adopt-and-realign or keep your project tempo and let Logic stretch the region — but know the stretch is Logic's, not the converter's, so the feel shifts.

Keep the region, or fold it into the arrangement?

Once the instrument sounds right and the notes are clean, decide how the imported region lives in your project:

None of this is special to this converter — it is ordinary MIDI workflow in Logic Pro. The only thing that was special was that the MIDI started life as an audio file you dragged in, not a part you played. For what is actually inside the file — the channels, the tempo map, the velocity values — see MIDI converter: what is actually inside a MIDI file.

Questions people actually ask

Do I need a paid Logic edition to import a MIDI file?

No. Importing a MIDI file works in both Logic Pro and the free GarageBand — GarageBand opens the .mid as a MIDI region on a Software Instrument track the same way. The limitations are on other features, not on bringing a .mid in. You can load, play, edit and arrange the converted notes in either app.

Why is the sound a different instrument than I expected?

Because the .mid carries no instrument. The sound is whatever patch Logic loaded on the track — a default patch on a new track, or the existing instrument on a track you imported onto. Open the Library and pick the sound you want; the notes are unchanged.

The tempo looks wrong. What happened?

The file carries the BPM you typed into the converter. If that was a guess, Logic adopted a guess. Re-import and choose to keep your project tempo, or re-run the conversion at the correct BPM so the tempo map is right from the source.

All my notes came in on one channel. Is that a problem?

It is expected — the converter writes a single channel, so a converted mix is not pre-split by instrument. For a solo line that is perfect; for a mix you will separate the parts by hand after import. The chord / polyphony question is the one covered in Logic Pro audio to MIDI: what the built-in capture can and cannot hold.

Can I send the MIDI out of Logic to another app?

Yes, but that is the reverse trip. This page is about bringing a converter's .mid in; if you want to know what Logic's own built-in Flex Pitch capture does — and when to skip it and export the file instead — see the Logic Pro audio-to-MIDI page.

Convert a file now — runs in your browser, nothing is uploaded, and you download a .mid Logic Pro opens directly.

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