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7 results for “harmonic”

Formulae (6)

HM = \frac{n}{\sum 1/x_i}

Reciprocal of the average of reciprocals.

F_1 = 2\cdot\frac{Precision \cdot Recall}{Precision + Recall}

Harmonic mean of precision and recall.

f_n = \frac{nv}{2L}

Harmonic frequencies of a fixed string.

f = \frac{1}{2L}\sqrt{\frac{T}{\mu}}

Fundamental pitch of a string from length, tension and mass.

f_n = n f_1

Overtones of a note are whole-number multiples of the fundamental.

THD = \frac{\sqrt{\sum_{n\ge2} V_n^2}}{V_1}

Ratio of harmonic energy to the fundamental.

Average speed over equal distances is the harmonic mean: 2ab ÷ (a + b), not the plain average.