Find the characteristic acoustic impedance of a medium from its density and sound speed: Z = ρ · c.
输入介质密度与声速,求特性声阻抗。
垂直入射反射系数 R = ((Z₂−Z₁)/(Z₂+Z₁))²,透射系数 T = 1−R,Z₁ 为当前介质(ρ·c)。