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21ic
1 年
DA和AD转换的原理详解
[导读]DA转换器(DAC)将数字信号转换为模拟信号,通常用于将数字音频、视频信号或其他数字数据变为可供人类感知或进一步处理的模拟信号。 带宽有限(band-limited) 采样频率大于2倍信号最高频率后可以无失真的恢复出原始信号。 实际中,信号往往是无线带宽的 ...
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