Audio Presets & Input
Detected Instrument Stems
Drums / Percussion
MIDI Ch 10 (GM Drums)
28 notes
Bassline
MIDI Ch 2 (Electric Bass)
32 notes
Keys / Poly Chords
MIDI Ch 1 (Acoustic Piano)
48 notes
Lead / Solo / Vocals
MIDI Ch 4 (Synth/Brass Lead)
36 notes
Separation & Detection Tuning
Pitch Sensitivity:
75%
Min Note Gate (ms):
60 ms
Rhythm Quantization:
Drums (Kick=C2, Snare=D2, HiHat=F#2)
Bass (E1 - G2)
Piano / Chords (C3 - C5)
Lead / Vocal (G4 - C6)
Interactive: Drag timeline or click on grid to compose
🎵 True Standard MIDI (.mid) Export
Converts all separated audio stems into Standard MIDI Format 1 (multi-track). Contains GM Program changes (Piano: 0, Slap Bass: 36, Saw Lead: 80) and dedicated General MIDI Percussion on Channel 10.
🔬 Polyphonic Spectral Decomposition
Uses Fast Fourier Transform (FFT) sub-band filtering, harmonic comb peak tracking, and transient onset detection to isolate simultaneous instruments from mixed polyphonic audio.
🎹 Multi-Voice Web Synth Engine
Features zero-latency polyphonic Web Audio synthesizers with customizable lowpass filters, envelope shaping, and FM percussion modeling for immediate in-browser playback.