The present method uses two measurements with two different boundary conditions to compensate for non-ideal anechoic termination.The results turn out that the measurement is accurate.

• 分别在两种不同的边界条件下进行不安装样品和安装样品两种状态的测量来对阻抗管非理想吸声末端进行补偿，准确的测得了材料的隔声量。