【摘要】 在LabVIEW的开发环境中,设计了基于PC机声卡的数据采集系统和滤波器,将计算机声卡作为数据采集部分的信号记录仪器,借助声卡中的A/D转换器,实现对声音信号的模数处理。同时,通过滤波器实现对采集的声音信号的滤波处理。实际应用表明,这种设计成本低、性价比高、使用简单、易操作,完全能够满足数据采集和滤波的要求。更多还原

【Abstract】 In the environment of LabVIEW development,the data acquisition system and filter design example based on the PC audio card were provided,by using the data acquisition card in computer as the signal recording device,and the A / D converter in audio card to make the A / D process for voice signal without any additional accessories,meanwhile,a variety of filters can be realized on the acquisition of the voice signal filtering treatment.The result shows easy-to-use,the application shows that the design with low cost and high performance can fully meet the data acquisition and filtering requirements.更多还原