声阻抗
声阻抗（一般用于讨论振动表面的辐射）定义为 —
\begin{align} \label{eq:11201a} \textsf{Acoustic impedance} = \frac{\textsf{Wave pressure}}{\textsf{Particle speed * Area of radiating surface}} \end{align}
声阻抗与声阻抗率之间的关系为 —
\begin{align} \label{eq:11202a} \textsf{Acoustic impedance} = \frac{\textsf{Specific acoustic impedance}}{\textsf{Area of radiating surface}} \end{align}
参见 Kinsler，第 87、111、231 页。
Acoustic impedance
Acoustic impedance (generally used in discussing the radiation from a vibrating surface) is defined as —
\begin{align} \label{eq:11201a} \textsf{Acoustic impedance} = \frac{\textsf{Wave pressure}}{\textsf{Particle speed * Area of radiating surface}} \end{align}
The acoustic impedance is related to the specific acoustic impedance by —
\begin{align} \label{eq:11202a} \textsf{Acoustic impedance} = \frac{\textsf{Specific acoustic impedance}}{\textsf{Area of radiating surface}} \end{align}
See Kinsler, pp. 87, 111, 231.