基于LabVIEW的声音信号采集分析系统

Sound Signal Acquisition and Analysis System Based on LabVIEW

声音信号在工业生产和日常生活中非常常见,稳定性和实时性好,声音信号的检测与处理对工业、军事等领域具有重要意义。因此,设计了一套声音信号采集与分析系统,以图形化编程语言LabVIEW作为软件设计平台,使用PC机携带的声卡为硬件,构建的系统能够完成声音信号的采集、存储以及调用历史数据等功能。根据检测到的声音进行信号滤波前后的时域和频域分析,对比效果明显。实践证明,该系统稳定可靠、性价比高,使用简单且易操作,能够满足声音信号的采集和分析要求。

Sound signals are very common in industrial production and daily life. The stability and real-time performance are great. The detection and treatment of sound signals are significant to industrial and military fields. Therefore, a system called sound signal acquisition and analysis is designed. The graphical programming language LabVIEW is used as the software design platform. The sound card is used as the hardware. The system can realize the acquisition, storage and playback of historical data. According to the detected sound of the signal before, the time-frequency comparison and analysis is finished and the effect is obvious. Practice has proved that the system is stable, reliable, cheap, easy to use,operate and can meet the sound signal acquisition and analysis requirements.