一、引言作为检查声学测量仪器性能的一种简便工具,声学校准器是很有用处的,但人们并不打算用它们代替标准实验室校准方法。在某些校准方法(例如传声器校准的比校法)中,活塞发声器是一种简单而稳定的声源,其校准测试传声器灵敏度的误差可小于0.05dB 加参考传声器灵敏度的不确定度。然而,它也受到限制, I. INTRODUCTION Acoustic calibrators are useful as a handy tool for checking the performance of acoustic measurement instruments, but they are not intended to replace standard laboratory calibration methods. In some calibration methods (such as microphone calibrated calibration), the piston sounder is a simple and stable source whose calibration test microphone sensitivity error can be less than 0.05 dB plus the uncertainty of the reference microphone sensitivity. However, it is also limited,