【摘要】 基于MATLAB的数据采集工具箱(DAQ)和信号处理工具箱开发了一套声音信号采集分析系统,该系统不仅能够实现低成本、高精度的实时采集,还能将声音信号资料导入系统进行时域和频域分析。利用另外一个工具Compiler使编制的MATLAB程序能够独立运行从而提高了运行速度;配备了友好的图形用户界面(GUI),方便用户操作。最后给出了系统在内燃机噪声诊断方面的应用实例。更多还原

【Abstract】 A system of sound signal acquisition and analysis is designed based on DAQ and signal process toolbox of MATLAB. The system can not only fulfill the real-time signal acquisition with low cost and high accuracy, but also can load sound files and do analysis in time domain and frequency domain. Another tool Compiler offered by MATMAB translates the program into a stand-alone one that runs faster. Friendly graphic interface make users control the program conveniently. At last, an example about internal combustion fault diagnosis is given.更多还原