Fig. 5
From: Comparative evaluation of interpolation methods for the directivity of musical instruments
Distribution of the global error measure Ψ for the examined interpolation methods triangular (T), spline (Spl, for M={1,2,3}), spherical harmonics (SH, for N={1,2,...,8}), and ordinary omnidirectional assumptions of the directivity (O) for each instrument individually and across all 27 analyzed partial tones. On each box, the central mark indicates the median, and the bottom and top edges of the box show the 25th and 75th percentiles, respectively. The whiskers extend from minimum to maximum