基于LabVIEW与声卡的音频信号采集系统与分析  

Acquisition system and analysis about audiosignal based on LabVIEW and sound card

作　　者：张银[1] 吕列艳[1] 杨恒[1] 孟苹苹[1] 

机构地区：[1]西南石油大学电气信息学院,成都610500

出　　处：《仪器仪表用户》2011年第3期72-73,共2页Instrumentation

摘　　要：为了利用廉价的计算机声卡进行音频信号的采集,采用基于NI公司图形化编程语言的开放平台LabVIEW,完成对音频范围内的信号采集,并对采集到的信号进行时域和频域频谱分析。通过具体实验表明:该系统能够正确的采集声卡设计频率范围内的信号,性价比高,人机界面交互性好,操作方便。具有成本低,根据客户需求功能扩充的特点。This paper introduces the design of acquisition system of audio signal based on open platform LabVIEW of NI to use inexpensive sound card,and achieve the acquisition within audio singnal,and do the time-domain analysis and frequency-domain analysis.Experiment result proved that this system can correctly acquire signal within the scope of sound card,and it is cost-effective and has good human-computer interaction interface,and easy to operate.It shows that this system is low cost,and can be expanded according to customer demand.

关 键 词：LABVIEW 声卡 音频采集 信号分析 

分 类 号：TH7[机械工程—仪器科学与技术]