摘要
用普通的计算机声卡代替商用数据采集卡,利用声卡的DSP技术和LabVIEW的多线程技术实现音频信号的数据采集,开发基于PC机声卡的虚拟音频信号分析仪。该系统能够正确采集声卡设计频率范围内的信号,实现音频信号时域分析和频谱分析功能。
Substitute commercial DAQ card with sound card, combined with DSP technology of sound card and multi-thread technology of LabVIEW, the acquisition of volume was realized. A virtual volume signal analyzer based on sound card of PC was developed. This analyzer can collect volume signal within a certain frequency range correctly, so that volume signal analysis can be made in time domain and frequency domain.
出处
《国外电子测量技术》
2006年第4期37-39,共3页
Foreign Electronic Measurement Technology
基金
湖南文理学院2005年院教改项目(200543)的资助。
