基于PC及声卡的声音信号的采集与分析，可以保存成WAV格式的声音信号，并可读取信号对其进行频谱，功率谱分析。-The voice signal based on the sound card of the collection and analysis

虚拟声卡设计，实现声音信号的生成以及对录制到的声音信号进行功率谱分析-Virtual sound card designed to achieve the sound signal is generated and the recorded sound signals to the power spectrum analysis