释义 |
rayl Acoustics.|reɪl| [f. Rayleigh.] A unit of specific acoustic impedance equal to one dyne-second/cm.3 (in the C.G.S. system) or one newton-second/m.3 (in the S.I.).
1954L. L. Beranek Acoustics i. 11 The specific acoustic impedance is the complex ratio of the effective sound pressure at a point of an acoustic medium or mechanical device to the effective particle velocity at that point. The unit is newton-sec/m3, or the mks rayl. (In the cgs system the unit is dyne-sec/cm3, or the rayl.) 1971W. W. Seto Schaum's Outl. Theory & Probl. Acoustics ii. 40 At standard atmospheric pressure and 20°C..the characteristic impedance of air is..415 rayls. |