Reference: M. J. Newton, D. M. Campbel, & A. Myers, (2026). "A parameter for predicting spectral enrichment in brasswind instruments," (in submission).

E ≈ (C / 2L_eff) Σ (1/D_n + 1/D_{n+1}) l_n

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Two columns, no headers:

position (mm), diameter (mm)

0,11.7,
......
......
1350,280.0
Units: mm (default 88)
Units: mm (default 0)