Calcolatore Impedenza Acustica — Formula

Characteristic Acoustic Impedance

Acoustic impedance determines how much sound pressure results from a given particle velocity in a medium.

Formula

Z = rho * c

  • *rho* = medium density (kg/m3)
  • *c* = speed of sound in the medium (m/s)

    • Air: about 415 Rayl. Water: about 1.48 million Rayl. Large impedance mismatches cause strong reflections at boundaries.

    Esempio Risolto

    Air at sea level (rho = 1.225 kg/m3, c = 343 m/s).

    1. Z = rho * c
    2. Z = 1.225 * 343
    3. Z = 420.2 Rayl