Mechanical guitar study · unapproved
Fret contacts.
Not pitch sweeps.
A new mechanical string and bridge model: higher notes close a driven fret contact, lower notes pull and release the upper contact. The string’s motion continues through connected notes.
Same 90 notes, 19.2-second chorus and backing. This is a new source comparison, not a claim that the guitar now sounds realistic. The previous source and every recording remain untouched.
With the band
Guitar only
Instrument first
Nine-second instrument probe · WAV: three held notes, closing-fret contact, pulling release, then two ascending contacts. Same source and amp; one shared gain.
The solver runs at 176.4 kHz. Its fixed-contact passivity, driven mechanical work, held pitches and timestep/mesh refinement are checked. Those checks do not prove convincing guitar tone.
Still a reduced model
The finger is a driven bilateral spring/dashpot, not a complete one-sided fretboard collision model. Contact and body parameters are designed, not measured. Picked gestures still begin from independently held plucks; a persistent six-string instrument, bending stiffness and polarization coupling remain unfinished.
Guitar loudness and dry amp-input RMS are matched with constant gains; bass, drums and the original amp chain stay fixed. No sampled instrument, paid API, new musical line or bus processing is added.
Physical model source · Numerical checks · Actual phrase pitch checks · Gesture states and energies · Mix and preservation checks · Primary references · Method and limits