Chord Survey
AI generated MIDI harmony inspection tool with weighted pitch classes, ranked key hints and editable chord candidates.
Screenshots
Screenshots supplied by the seller.
Description
AI generated. Chord Survey examines the notes in a Standard MIDI File and proposes harmony labels for fixed beat windows. Inspect duration weighted pitch classes, three chord candidates per window and ranked major or minor key hints.
Select a note track, choose window length and decide whether velocity affects weighting. Correct the root or chord quality of each window before auditioning or exporting a simplified harmony track. Three original MIDI examples illustrate clear, colored and ambiguous cases.
Export the edited chord reduction as MIDI, a harmonic window CSV or an analysis JSON. Key and chord scores are transparent heuristic fits, not authoritative music theory judgments or probabilities.
Condition
Development stage: Mostly built (seller-declared)
Seller-declared: provided by the seller, not independently verified by SellMyVibe.
- Solo creator
- Mainly AI-generated
- Under one month in development
- Tests included
- Setup guide included
- Demo available
What works
- MIDI format 0 and 1 PPQ note parsing
- Duration and optional velocity weighted pitch classes
- Ten original chord template comparisons
- Three candidates per fixed beat window
- Major and minor key fit ranking
- Editable chord root and quality per window
- Track selection and drum exclusion
- Original note and chord reduction audition
- Tempo aware chord MIDI reduction export
- Harmony CSV and JSON
- Template, inversion, key ambiguity and MIDI tests
What’s unfinished
- No audio transcription or Roman numeral analysis
- No guarantee for nontriadic or changing meter harmony
- DAW import, completed downloads and other browsers unverified
Included assets
Editable source code
Setup and usage documentation
Original sound definitions
Audio verification checks and notes
Real running screenshot
Technologies
HTML, CSS, JavaScript, Web Audio API
Setup requirements
Open index.html or serve the folder with any static HTTP server. Use a deliberate play action to enable audio.
Dependencies and ongoing costs
No third party libraries, paid APIs or required services. A current Web Audio capable browser is required. Optional static hosting can be free.
Known limitations
Standalone browser MIDI analysis tool. Format 0 or 1, PPQ only, up to 2 MB, 32 tracks, 2048 notes and 20000 events. SysEx, SMPTE timing, unmatched notes and unsupported system events are rejected. Percussion channel 10 is excluded. Windows use quarter beats rather than meter aware bars and stop at 128 windows. Key and chord fits can be ambiguous. Reduction MIDI contains new close position chords and retains tempo and meter metadata, not original performance controls or voicings. Preview is limited to the first 30 seconds.
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