phase velocity

5.33  phase velocity. Velocity in the direction of propagation of a surface of constant phase. Unit, m/s; symbol,...

acoustic phase constant

5.32  acoustic phase constant. Imaginary part of the acoustic propagation constant. Unit, radian per section or per unit...

acoustic attenuation constant

5.31  acoustic attenuation constant. Real part of the acoustic propagation constant. Unit, neper per section or per unit...

acoustic propagation constant

5.30  acoustic propagation constant. Natural logarithm of the complex ratio of the steady-state particle velocities, volume velocities, or pressures at two points separated by unit distance in a uniform system (assumed to be of infinite length), or at two...

Doppler shift

5.29  Doppler shift. Change in the observed frequency of a wave as a result of the Doppler effect Unit, hertz...

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