Calculadora de Frecuencia por Banda de Octava — Fórmula

Octave and Fractional-Octave Bands

Sound analysis often divides the spectrum into bands of constant percentage bandwidth.

Formulas

f_upper = f_c * 2^(1/(2N)) f_lower = f_c / 2^(1/(2N))

where N is the fraction denominator (1 for full octave, 3 for third-octave).

For a full octave band (N=1): f_upper/f_lower = 2 (one octave). For third-octave (N=3): the ratio is 2^(1/3) = 1.26.