专为测量传声器和其它类型传声器的低频频率响应测量而设计。
9757 型
一种用于确定测量传声器和其它类型传声器的低频频率响应的传声器校准系统。9757型系统， ；应用专门设计的低频比较耦合腔进行测量。
9757型校准系统，设计用于测量传声器在极低频率范围内的频率响应。专门设计的低频比较耦合腔允许传声器完全插入耦合腔内，从而确保后置均压孔传声器的静态均压孔也能暴露于施加的声压之下。如果传声器用于自由场测量，则需要在校准过程中将传声器的均压孔暴露于声场之中。
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.
This will bring together HBM, Brüel & Kjær, nCode, ReliaSoft, and Discom brands, helping you innovate faster for a cleaner, healthier, and more productive world.