The Stuart soundboards vibrated at larger amplitudes than Steinway in each of the velocity strikes for C3 130.81Hz. The larger amplitude of the Stuart’s 2nd partial radiation to mic 8, for the note C3v81, illustrated in the see spectrogram 4.315 above, is supported by a large resonance of the 2nd partial in the Stuart soundboard at probe position B, v81 & v54.The Steinway sound board distinctively resonated the 3rd partial more prominently at probe B, v81 & v54.
