The design of multifunctional teaching assistant system is based on the bluetooth technique. It is the combination of speechtransmission, multimedia control and wireless Udisk.
基于蓝牙通信技术，设计了一种具有语音传输、多媒体设备控制以及无线U盘等功能的多媒体教学辅助系统。
2
Generally, a given speech sample is played over the speech path, where it presumably undergoes various types of impairments during encoding, packetization, transmission, and decoding.
通常，一个给定的语音样本通过语音信道，在编码，分组，传送和解码过程中会遭到不同类型的损伤。
3
Speech coding is the foundation of digital transmission and storage of speech.