When the note C2 was struck at v20, p, the following soundboard vibrations were monitored in each of the four positions:
| Stuart C2v20 M19 (STU) mixed array |
Steinway C2v20 STE mixed array |
| Sound table 3.7 | |
See Appendix 3 for the actual amplitude spectra graphs for C2v20, and all other soundboard vibration results. The probe positions provide information on the size or amplitude of the soundboard vibrations. Although four positions cannot reveal all of the soundboard’s vibrational characteristics, the size of the vibration is indicated, remembering that the soundboard vibrates as one whole unit as well as in it’s segregated modes of vibration. The four probes collectively established a 58% difference in the amplitude of the vibrations in the Stuart and Steinway soundboards.
