Inharmonicity Coefficients (B)
The values of B depend on the string length and diameter, and therefore B for each string varies significantly from A0 to C8. The range of values for various pianos is shown below, from A0 (27.5 Hz) to A6 (1760 Hz) and slightly beyond. An accurate measurement of the inharmonicity above C6 is difficult due to the absence of significant partials beyond the fundamental in these high notes. The cluster of values from 220 to 440 Hz covers the "temperament octave" from A3 to A4. The smooth curves through the points are defined by an arbitrary function that allows for interpolation. (See below for details.) Note that the Veritune measures the inharmonicity of each note individually. It does not assume an idealized smooth curve.