SOLO FLUTE WORKFLOW
Record or upload a short flute melody with one pitched line and as little accompaniment as possible. Convert it in the tool below, compare the note preview with the recording, then download the .mid file. If a breathy start is missing or creates a fragment, separate the unpitched breath from the held tone before adjusting Silence threshold or Minimum note. This browser converter detects one pitch at each analysis moment; it does not split a flute duet into separate tracks.
PROCESS ON THIS DEVICE
Try a short clean phrase first. Listen to the source and compare its note starts and tails with the detected notes.
INPUT MP3 / WAV / M4A / FLAC / OGG → OUTPUT .MID
or click to choose audio from your device
MP3, WAV, M4A, FLAC, or OGG · one file · up to 50 MB / 5 minutesRESULT
Your flute recording stays on your device. All processing happens in this browser. No file is uploaded to a server.
CONTROLLED SIGNAL CHECK
A locally generated WAV contained a brief low-level noise onset, a held 659.25 Hz tone, a gap, and a held 783.99 Hz tone. With the displayed default controls, this page completed conversion and showed two notes in MIDI range 76–79. This is a software-path check using a synthetic signal, not a test of a real flute recording or a claim about transcription accuracy.
BEFORE TUNING CONTROLS
Play the beginning of one note. Mark where the audible flute pitch becomes steady, not just where the first breath occurs. The algorithm estimates pitch only when a frame is loud enough and sufficiently periodic. Airy noise can be audible without meeting that test.
SECOND CHECK
Listen between two flute notes. A clean pause can separate detected note blocks; connected breath or room noise can obscure that boundary. Compare the preview against the actual performance before deciding that a missing gap is an error.
| Preview symptom | First source check | Single test | Keep condition |
|---|---|---|---|
| First tone starts late | Is the beginning mostly air before a stable pitch? | Record a cleaner onset of the same short phrase | The block starts closer to the audible pitched tone |
| Extra short block before a held note | Is there a noisy breath or unstable onset? | Keep the file fixed; raise Minimum note one step | The extra block vanishes while a real short note survives |
| Quiet held note is absent | Can you hear a steady pitch above room noise? | Keep the file fixed; lower Silence threshold one step | The intended note appears without noise blocks |
| Two notes merge | Is there an audible gap in the source? | Make a new recording with a clear gap; do not also move sliders | The preview follows the intended two-note separation |
| High tone is absent | Is its pitch beyond the displayed High bound? | Widen only the High pitch edge | The intended block returns without unrelated high blocks |
CODE CHECK
The shared detector computes frame loudness and rejects frames below Silence threshold. It then looks for a stable repeated waveform pattern; a frame without a strong periodic match has no pitch. Lowering the threshold can admit quiet pitched frames, but it cannot turn unpitched breath into a reliable note.
DURATION CHECK
After pitch detection, adjacent frames with the same rounded MIDI note are grouped. Minimum note then removes detected events shorter than the chosen duration. Raise it only for brief unwanted fragments, because a real short flute note can also be removed.
QUICK ANSWERS
Yes, for a clean single-pitch flute melody. Choose an accepted audio file or record in the browser, convert it, inspect the preview, and download a .mid file.
Breath noise may be audible without a stable pitch. This detector requires sufficient loudness and a periodic pitch pattern before it can write a note.
Only after checking that the source contains an audible pitched tone. Lower it one step with the same file, and keep it only if the note appears without extra noise events.
No. It estimates one pitch per frame and exports one detected note line. Use isolated parts if separate tracks are needed.
No. Audio decoding, note detection, preview, and MIDI creation happen in your browser.