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PIANO SCALE EVALUATION

PIANO SCALE EVALUATION. A DISCUSION OF RESTRINGING PREPARATION . AGENDA. Scale copy Benefits of Evaluation – Specification Evaluation Elements Specifications to the String Manufacturers Data Capture. SCALE COPY. Paper patterns Duplication Few known parameters Tension Inharmonicity

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PIANO SCALE EVALUATION

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  1. PIANO SCALE EVALUATION A DISCUSION OF RESTRINGING PREPARATION Oppor-TUNE-ist Piano Service

  2. AGENDA • Scale copy • Benefits of Evaluation – Specification • Evaluation Elements • Specifications to the String Manufacturers • Data Capture Oppor-TUNE-ist Piano Service

  3. SCALE COPY • Paper patterns • Duplication • Few known parameters • Tension • Inharmonicity • Expansion • Volume/Impedance Oppor-TUNE-ist Piano Service

  4. Benefits of Scale Evaluation • Control winding material changes • Better match to Historic Characteristics • Smooth out parameter curves • Correction of termination nuances or replacement of termination points. • Stress leveling to aid stability Oppor-TUNE-ist Piano Service

  5. Winding Material Changes • Most common winding material today is soft copper. • Difference in densities results in different volume, tension, inharmonicity Steel->Copper Silnic->Copper Aluminum->Copper Oppor-TUNE-ist Piano Service

  6. Better Match to Historical Characteristics • Change of core or wrap to control • Tension • Volume/impedance • Expansion • Pitch change Oppor-TUNE-ist Piano Service

  7. Improve Parametric Consistency • Inharmonicity Curves • Tension Patterns • Volume Curves • Across the breaks Oppor-TUNE-ist Piano Service

  8. Tension Oppor-TUNE-ist Piano Service

  9. Volume Oppor-TUNE-ist Piano Service

  10. Inharmonicity Oppor-TUNE-ist Piano Service

  11. EVALUATION ELEMENTS • Speaking Length • Core / Wrap • Material • Length of Wrap • Wrap Step • Exposed core length Oppor-TUNE-ist Piano Service

  12. Change in Material Oppor-TUNE-ist Piano Service

  13. Speaking Length Oppor-TUNE-ist Piano Service

  14. Core Oppor-TUNE-ist Piano Service

  15. Wrap Oppor-TUNE-ist Piano Service

  16. Step Oppor-TUNE-ist Piano Service

  17. Exposed Core Oppor-TUNE-ist Piano Service

  18. String Specifications • Core • Wrap Diameter • Wrap step • Loop to start of wrap • Length of wrap • Tolerances Oppor-TUNE-ist Piano Service

  19. Data Capture • Speaking Length • Core & Wrap • Bridge to start of wrap • V-Bar to start of wrap • Bridge to loop Oppor-TUNE-ist Piano Service

  20. Reference Illustration Length of Wrap Loop to Wrap Speaking Length Tail Vbar Wrap Diameter Step Bridge Core Diameter Oppor-TUNE-ist Piano Service

  21. THANK YOU • Please write with any questions or comments to opportuneist.pianoservice@Verizon.net • Visit the web site at • www.oppor-tune-ist.com Oppor-TUNE-ist Piano Service

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