The Chord Stab
A chord's shimmer is its tuning. In equal temperament the third of a C major is 13.7 cents sharp of 5:4, so the root's fifth harmonic and the third's fourth miss by 10.4 Hz and beat that fast, measured off the sound, swelling 15 dB. In just tuning the same pair sits dead still. A minor third beats faster, and a 250 ms stab still holds two and a half swells of it.