Speaker Sound Q

Computes the theoretical loudspeaker directivity Q and directivity index (DI) from horizontal and vertical coverage angles using: Q = π / arcsin(sin(H/2) × sin(V/2)) and DI = 10 × log₁₀(Q).

Inputs

Horizontal Coverage(°)

Horizontal coverage angle of the loudspeaker in degrees (0–360)

Vertical Coverage(°)

Vertical coverage angle of the loudspeaker in degrees (0–360)

Results

⚠Coverage angles must be greater than zero

Theoretical Loudspeaker Q—Theoretical directivity factor Q (dimensionless)

Directivity Index—dBDirectivity index in decibels