Longitudinal Modes in Piano Strings by James F. Ellis RPT | Piano Technicians Guild - PTG

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Longitudinal Modes in Piano Strings
A Study of the Intrinsic Parametric Coupling Between Transverse and Longitudinal Modes in Taut Strings
by James F. Ellis, Registered Piano Technician Details 25 years of observation and study, followed by 12 years of intensive research and experimentation, in an effort to identify the intrinsic mechanisms that excite longitudinal modes in piano strings. Also includes practical methods piano technicians can use to reduce longitudinal ringing.

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