The secure, high-capacity, jam-resistant wireless (non-satellite) system connects users with both digital data and voice communications.
这种安全、高容量、抗阻塞的无线（非卫星）系统通过数字数据以及话音通信使战场用户互连。
2
The technique of speech synthesis is used in the information announcement system of residential quarters, and the voice is transferred by digital signal.
将语音合成技术应用于居住小区信息发布系统，采用数字信号传输语音。
3
At present, the general method of composing a multimedia network teaching system, such as a voice classroom, is formed by a computer and several digital terminals which were specially made.