以数字表示的声音在时间上是离散的，而模拟声音在时间上是连续的。要把模拟声音转换为数字声音，就需在某些特定的时刻获取模拟声音，该过程称为（ ）。
- A.采样
- B.量化
- C.编码
- D.模/数变换
正确答案及解析
正确答案
解析
本题考查多媒体的基础知识。采样（sampling）是将时间上、幅值上都连续的模拟信号，在采样脉冲的作用下，转换成时间上离散（时间上有固定间隔）、但幅值上仍连续的离散模拟信号，也指把模拟音频转成数字音频的过程，A选项正确。
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