C5v20 MW mic2
Soundboard: The Steinway soundboard vibrated 35% more actively than Stuart, for the note C5v20 . The fundamental frequency vibration was of larger amplitude in the Steinway soundboard, and the Stuart soundboard vibrated a larger amplitude of the 2nd partial frequency. Both these findings correspond with the radiated sounds to mic2, illustrated in the spectrogram.
Instrument Volume Mic7: M19 (STU) 83dB , STE 82dB
String Scale: For the note C5, the diameter of the Paulello-Stuart wire is .35mm thicker, the tensile strength of the Paulello/Stuart wire is 138 N/mm² higher. The Paulello-Stuart wire for C5 is 4.5mm longer, and is set at 7kg higher tension. The yield or capacity of the Paulello-Stuart wire is approximately 10% higher than the Roslau-Steinway wire.
C4v54 MW mic4
Soundboard: The Stuart soundboard was 71% significantly more actively vibrating than the Steinway soundboard for the note C4v54. Both the fundamental and 2nd partial frequency vibrations were of greater magnitude than Steinway. In contrast to this, the Steinway radiated a larger 2nd partial than Sturt, to mic 4.
Instrument Volume Mic7: M19 (STU) 89 dB , STE 86 dB
String Scale: The diameter of the Paulello/Stuart wire is .25mm thicker, the tensile strength of the Paulello/Stuart wire is 177 N/mm² higher, the Paulello/Stuart is 1.5mm longer, and is set at 3.5kg higher tension. The yield or capacity of the Roslau/Steinway wire is 3.6% higher than Paulello/Stuart.
C3v20 MW mic5
Soundboard: The Stuart soundboard vibrated larger amplitudes of the Fnd. , 2nd & 3rd partial frequencies. Overall, the Stuart s-board harmonic vibrations were 31% larger in amplitude than Steinway’s. The Steinway s-board produced larger amplitudes of upper partials 4,5,6 & 7.
Instrument Volume Mic7: STU 86 dB , STE 85 dB
String Scale: For the note C3, the diameter of the Paulello/Stuart wire is 25mm thicker, the tensile strength of the Paulello/Stuart wire is 177 N/mm² higher , the Paulello/Stuart is 1.5mm longer, and is set at 3.5kg higher tension. The yield or capacity of the Roslau/Steinway wire is 3.6% higher than Paulello/Stuart.
