在规范的音响工程施工中，经常需要对系统的各项技术指标进行检测，其中声场的声学指标是技术人员最关心的，它对工程的安装、调试，甚至建筑声学设计都很有参考价值。通常来讲，频谱分析仪是再好不过的测试仪器了，但是一台性能优良功能齐全的频谱分析仪动辄几万元甚至更高的 In the standard sound engineering construction, it is often necessary to test every technical index of the system. The acoustic index of the sound field is most concerned by the technicians. It is of great reference value to the installation, debugging and even the architectural acoustics design of the project. In general, the spectrum analyzer is no better than the test equipment, but a fully functional performance spectrum analyzer easily tens of thousands of dollars or more