噪音整形产生的问题，就是小信号的损失——信号小于噪音整形本底噪音的就是损失的信息量。
The problem with noise shaping is that small signals get lost - any signal below the noise shaper noise floor is lost information.
其中硬件电路包括键控制模块、显示模块、输入信号整形模块以及单片机和CPLD主控模块。
Hardware circuit includes key control module, display module, plastic module of input signal, single chip computer control module and CPLD main control module.
详细阐述了I/V转换电路模块、模数转换采集电路模块、转速信号滤波整形电路模块和远端显示电路模块及接口电路的设计。
The design of I/V converter module circuit, ADC module circuit, speed signal per revolution filter shaping module circuit, remote display module circuit and interface circuits are expounded.
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