String Scale: For the note C3, the diameter of both wires is identical at 1.125mm. The tensile strength of the Paulello/Stuart wire is 140.5 N/mm² higher, the Roslau/Steinway is 41mm longer, and is set at 6.7kg higher tension. The yield or capacity of the Paulello/Stuart wire is 8% higher than Roslau/Steinway.

Instrument Volume Mic7: STU 98dB , STE 97dB
Soundboard: The Stuart soundboard vibrated strong amplitudes of the Fnd. , 2nd ,6th & 9th prts.The Steinway s/board produced prominent vibrations of the 3rd, 4th & 7th prts.

The Stuart sound transfers to the slower settled rate of decay sooner than Steinway , at 1s, establishing a slower rate of decay 3dB/s (ii)

Conclusion

The stability of the first 1s of sound is a distinction of the Stuart piano sounds of the note C3. The Steinway was heard to change dramatically with the swelling of the bass frequency and the sudden decay of the fundamental. The slower decay of the Stuart fundamental frequency from .3s, and the earlier transition to the slower decay rate at 1s, are tonal characteristics observed in many of the Stuart sounds examined in chapter 4.