2.69 sound-energy flux. Time-average of the time rate of flow of sound energy through a specified area. Unit, watt (W); symbol,...
2.65 volume velocity....
2.46 spectrum density. Limit, as the bandwidth approaches zero, of the quotient of mean-square value of an acoustic variable by bandwidth....
2.28 wave number. (a) 2π divided by the wavelength of a periodic wave. (b) Angular frequency divided by speed of sound. Unit, reciprocal meter (1/m); symbol k =...
2.27 wavelength. For a simple harmonic wave in an isotropic medium, perpendicular distance between two wavefronts in which the displacements have a difference in phase of 2π radians. Unit, meter (m); symbol λ, λ = c /...
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