Accurate Musical Key & Tonality Detection
Identifying the musical key and tonal center of an audio track is critical for vocal tuning, harmonic mixing, remixing, and instrument solos. Full Partituras Studio Online Key Detector analyzes audio chromagrams to find the primary key signature and modal tonality.
How Key Detection Operates
- Pitch-Class Chromagram Extraction: The audio spectrum is mapped into 12 discrete pitch classes across multiple octaves, measuring the cumulative energy of each musical pitch.
- Harmonic Key-Profile Correlation: The aggregated pitch profile is mathematically correlated against standardized major and minor tonal hierarchy profiles across all 24 musical keys.
- Tonic & Relative Key Resolution: The engine compares tonic weightings against relative major/minor pairs to resolve ambiguous key centers and modal shifts accurately.
How to find the key of a song
- Upload your MP3 or audio file to the Key Detector.
- The DSP chromagram engine analyzes the harmonic profile across all 24 major and minor keys.
- View the detected key signature, scale mode, and relative major/minor tonality.