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利用计算机和Ａ／Ｄ采集卡采集实时信号，经ＦＦＴ软件处理可得对应信号的频谱，并可对多种信号进行处理分析。装置简单，经济实用。
Using computer and A / D acquisition card to capture real-time signal, the FFT software processing can be the corresponding signal spectrum, and a variety of signal processing analysis. The device is simple, economical and practical.