The devices sense analog electrical brain waves and process them into digital signals to make measurements that can control games.

这些设备感应类似电流的电脑波然后把他们加工成能操控游戏的尺度的数字符号。

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As most physical signals in the nature are analog signals, the conversion from analog signals to digital signals has become the key step in the process of signal processing and analysis control.

但是自然界中大多数物理信号却是模拟信号，因此，将模拟信号转化成数字信号是进行信号处理和分析的首要前提。

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This system is constituted by four modules: analog signals acquisition module, digital signals acquisition module, CPLD control module and central DSP module.

本系统由四个模块构成：模拟信号采集模块、数字信号采集模块、CPLD控制模块和DSP核心处理模块。

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