声音定位方面，采用计算机声卡和驻极体话筒进行声音信号的采集，并且依靠DirectSound控件，对两路声音信号进行相关分析，最终确定声源的方向。
For acoustic positioning , computer sound card and ECM electret condenser microphone are adopted for acoustic signal receiving , and DirectSound is used for relevant analysis of the two signals and positioning their sources .
驻极体话筒