Audio to MIDI vs Voice to MIDI: Which Do You Need?
Last updated July 15, 2026
Both tools do the same magic trick — turn sound into editable MIDI notes you can replay on any instrument — but they start from opposite ends. Audio to MIDI converts a recording you already have. Voice to MIDI turns the idea in your head into notes as you sing, hum, or beatbox it. Picking the right one is simply a question of what you are holding: a file, or a melody you can only perform.
If you already have a file or a stem, drop it into the audio-to-MIDI converter and get an editable .mid back — free, in your browser.
Open audio to MIDI →The one difference: a file vs your voice
Audio to MIDI takes an existing recording — an MP3, a WAV, an isolated stem, a sample, even a part exported from an AI song — and estimates the notes in it. You upload (or drop in) a file.
Voice to MIDI takes your microphone. There is no file — you sing a melody, hum a topline, or beatbox a beat, and it writes what you performed as MIDI played back on real cleared instruments. It is for the idea that only exists in your head.
When to use audio to MIDI
- You have a recording. A guitar take, a bassline, a vocal, a loop, an mp3 you found.
- You want a sample as notes. To re-voice a melody onto a different instrument or feed a sampler.
- You are pulling a part out of a song. Isolate one instrument first, then convert it — see why full-mix audio to MIDI fails.
- You want to edit an AI song. Convert its stems to MIDI so you own and can rework the parts — see convert a Suno song to MIDI.
When to use voice to MIDI
Reach for voice to MIDI when there is nothing to upload — the part is a hum, not a recording. It shines for three jobs producers actually do:
- Capture a fleeting idea. The melody in your head at 2am becomes editable notes before it is gone, instead of just another voice memo.
- Sketch a line you cannot play. If you do not play keys, singing a string part or a topline is faster than hunting for it note by note.
- Beatbox a beat. Program a rhythm with your mouth and hear it on real cleared drums.
Accuracy: both love a single line
Both tools are at their best on a single monophonic line — one note at a time. For audio to MIDI, that means feeding it one isolated instrument, not a full mix. For voice to MIDI, it means one clear melody or one drum sound at a time. Neither reads chords out of a dense recording reliably; that is a limitation of the technology, not the tool.
Voice input has its own quirk: a bright voice can trip an octave error, and it is genuinely ambiguous where one sung note ends and the next begins. So treat either output as an editable sketch you refine, never a flawless transcription.
Side by side
| Audio to MIDI | Voice to MIDI | |
|---|---|---|
| Input | A recording / file you upload | Your microphone (sing, hum, beatbox) |
| Best for | Turning an existing part into notes | Capturing an idea you can only perform |
| Free on Selekt | Guitar, vocal, melody (on-device) | Yes — mic-based, in browser |
| Then what | Edit + re-voice on cleared instruments | Hear it on cleared instruments, then build |
If the part is only in your head, sing or beatbox it and hear it played back on real cleared instruments.
Open voice to MIDI →Frequently asked questions
What's the difference between audio to MIDI and voice to MIDI?
Audio to MIDI converts an existing recording you upload (an MP3, WAV, or isolated stem). Voice to MIDI uses your microphone to turn singing, humming, or beatboxing into MIDI in real time. Same output — editable notes — different input.
Which is more accurate?
Neither is 'more accurate' in general — both are strongest on a single monophonic line. Audio to MIDI is very good on one clean isolated instrument; voice to MIDI is very good on one clear sung melody. Dense polyphony is hard for both.
Can I hum a whole song and get MIDI?
You can hum one line at a time — a melody, a bassline, a topline — and layer them. You cannot hum full chords and get a clean chord transcription; sing the parts separately instead, or play them in after.
Does audio to MIDI work on my singing?
It can, if you record your voice to a file first — a sung melody is a clean monophonic line. But if you just want to sing an idea in live and hear it back on instruments, voice to MIDI is the more direct tool.
Which should a songwriter use?
If you have a recording of the part, use audio to MIDI. If the idea is only in your head and you want to capture it fast, use voice to MIDI. Many writers use both — sing the topline in, then convert a guitar demo of the chords.
Key takeaways
- Audio to MIDI = convert a recording you upload. Voice to MIDI = turn your live singing/humming/beatboxing into notes.
- Use audio to MIDI when you have a file or stem; use voice to MIDI when the part only exists in your head.
- Both are best on a single monophonic line — one isolated instrument, or one clear melody at a time.
- Treat either output as an editable sketch, then refine and re-voice it on cleared instruments.
- On Selekt the two tools cross-link, so you can route by what you are holding: a file, or your voice.
