平时所说的多少“位”声卡，实际上是指声卡的采样位数（Sampling Resolution）。而采样位数是指每个采样点所代表的音频信号的幅度值，然后用二进制数表示，这里的二进制数的位数即为采样位数。
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着重分析了光源稳定性、CCD 性能、AD 采样位数对测量结果稳定性的影响。
The influence of light source stability, CCD performance and AD sampling digit on the stability of measuring results is analyzed.
在基于中频采样技术的数字中频接收机中，怎样在AD变换器位数受限的情况下实现较大的系统瞬时动态范围是系统设计中的一个重要问题。
In digital IF receiver based on IF sampling technology, one important issue of system design is how to realize wide instantaneous dynamic range, when the available digits of AD converter is limited.
对调制器的结构和设计技术进行了研究，根据系统要求设计了量化器位数，调制器过采样比和阶数。
The architecture and design methods of - modulators are studied . based on it , the bits of quantizer , oversampling - ratio and the orders of modulator have been designed.
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