Turn a clear guitar melody into an editable MIDI draft.

In standard tuning, the guitar's open strings run from E2 through E4. In the current converter, those fundamentals are all above the 55 Hz search floor and below the 1,400 Hz ceiling. Even the high E string at fret 24 is about 1,319 Hz, still inside that search band. The table maps the familiar tuning to the implementation's actual frequency and MIDI pitch limits.

The code searches a frequency band and then rounds estimated pitches into MIDI notes 28–96. Being inside those bounds only means a note is not excluded by the configured range. It does not establish that the detector chose the guitar's fundamental rather than a harmonic, or placed the note at the right time.

A picked lead phrase usually gives a monophonic estimator one intended note to follow, especially when notes do not overlap. A strummed chord puts several fundamentals and harmonics into the same frames. The current detector does not create one independently tracked MIDI lane per string; its autocorrelation pitch estimate is reduced to one pitch at a time. Let sustained notes ring across a new attack and the source becomes less like the single-note path the tool expects.

Three guitar-specific checks after conversion

1. Pick a clean phrase. Use a solo line with little backing, restrained distortion, and enough separation between notes to hear each attack.
2. Check octave and harmonics. Compare each MIDI note with the guitar part; a bright pick transient or strong harmonic can make a pitch estimate land on the wrong register.
3. Inspect note joins. Vibrato, slides, bends, and ringing strings can turn one performed gesture into split or shifted note events. The MIDI draft does not preserve guitar articulation.

The converter reads channel zero from the decoded audio buffer, searches 55–1,400 Hz, accepts rounded MIDI pitches 28–96, and groups adjacent frames only when their estimates stay within one semitone. It writes one MIDI track at 120 BPM with 480 ticks per quarter note. These are limits read from converter.js, not a measured guitar accuracy result.

Evidence boundary. The tuning values are standard six-string guitar fundamentals; the detector and export limits are from the shipped code. No guitar file has been scored against a note-level reference on this page, so it does not report accuracy, missed-note counts, or a conversion-time benchmark.

For drums, pitch is the wrong target: the drum-to-MIDI workflow treats attacks as transient events and maps them to drum lanes.

For an audio file format rather than an instrument source, see WAV to MIDI or MP3 to MIDI. For the broader tool decision, start with the audio-to-MIDI workflow guide.