中文说明： 增量调制（DM 或 Δ 调制） 是模拟-到-数字和数字-到-一种用于语音信息的传输质量不是最重要的模拟信号转换技术。DM 是最简单形式的差分脉冲编码调制（DPCM） 凡连续样本之间的差异编码到 n 位数据流。在增量调制，传输的数据减少到 1 位数据的流。其主要特点是：
English Description：
Incremental modulation (DM or Δ modulation) is a kind of analog to digital and digital to digital conversion technology, which is not the most important for the transmission quality of voice information. DM is the simplest form of differential pulse code modulation (DPCM) where the difference between successive samples is encoded into an n-bit data stream. In incremental modulation, the transmitted data is reduced to 1 bit data stream. Its main features are as follows