摘要
介绍虚拟仪器的基本原理,叙述虚拟仪器开发平台LabVIEW的特点,并提出虚拟实验仪器系统的软件设计方案。以音频信号分析系统设计为例,验证虚拟实验仪器的实用性和优越性。利用麦克风采集被测对象生成的音频信号,再通过计算机的声卡转换为数字信号,最后由自制音频分析虚拟仪器实现音频信号的时域分析、频域分析及数据存储等功能。
Introduces the basic principle of virtual instrument, the virtual instrument development platform LabVIEW characteristic, and proposes the virtual instrument system software design. Takes the audio signal analysis system as an example to verify the practicability and superiority of the vir- tual experiment instrument. Uses the microphone to collect the measured object generated audio signal, and then through the computer sound card converted to a digital signal, finally by home- made audio analysis virtual instrument to realize the audio signal in time domain analysis, fre- quency domain analysis and data storage function.
出处
《现代计算机》
2012年第5期69-73,共5页
Modern Computer
