They assumed language must be based on speech , the modulation of sound .
他们认为语言必须以话语为基础，也就是对声音的调节。
2
In this paper, a new adaptive delta modulation (ADM) method, hybrid companding delta modulation with algorithm (AHDM), is proposed for speech coding.
本文提出了一种新的自适应增量调制（ADM） 话音编码方案——加性混合压扩增量调制（AHDM）。
3
Through analyzing the speech code-decode principle of the Continuously Variable Slope Delta modulation (CVSD), the CVSD algorithm is discussed in detail.