Harmonic Progression Lab

ACOUSTICS v1.0

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How it started
C Major (Triad)
Basic triadic cadence (Root, 3rd, 5th) - Pure acoustic fundamentals
How it's going
Cmaj9(#11)
Extended modal jazz resolution (Root, 3rd, 5th, 7th, 9th, #11)
Live Overtone Spectrum f0 = 261.63 Hz
FFT ACOUSTIC HARMONICS
Oscilloscope Trace
WAVEFORM TRACE
Chord Progression Sequencer
120 BPM
Overtone Series Soundboard Weights Tweak physical partial harmonic distribution
1.00
0.50
0.25
0.13
0.05
Preset Progressions
Acoustic Telemetry
Active Chord: C Major
Consonance Index: 0.85
Harmonic Richness: 4 Partials
Dominant Overtones (Hz):
261.63, 523.25, 784.88, 1046.50
Acoustics Concept

"How it started" relies on standard pythagorean triads (1:1, 4:3, 3:2 ratios). "How it's going" introduces upper partial extensions (9ths, #11ths) that align with natural high-frequency acoustic overtones.

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