矿井无线透地通信中语音信号压缩的研究

doi:10.11799/ce201403007

煤炭工程 ›› 2014, Vol. 46 ›› Issue (3): 20-22.doi: 10.11799/ce201403007

矿井无线透地通信中语音信号压缩的研究

赵红玉¹,陶晋宜¹,²,王园媛¹,²,陈玥如¹,²

1. 太原理工大学电气与动力工程学院
2.

收稿日期:2013-10-28 修回日期:2013-12-11 出版日期:2014-03-14 发布日期:2014-03-15
通讯作者: 赵红玉 E-mail:378154094@qq.com
基金资助:
山西省自然科学基金资助项目

The Research of Speech Compression Used in the Wireless Transmission for Mine

Received:2013-10-28 Revised:2013-12-11 Online:2014-03-14 Published:2014-03-15

摘要/Abstract

摘要：

针对矿井无线传输信道信号传输损耗大、传输距离短、传输信道窄、噪声干扰大、传输能力有限、语音信号信噪比低的特点，通过对井下语音信号和噪声的分析，基于语音压缩技术提出了一种用于矿井无线语音信号压缩的模型。并采用实时通信系统的动态仿真软件Systemview对压缩方案模型进行仿真，验证了压缩方案的可行性。测试结果表明：当语音信号频率在800Hz-3000Hz范围内，抽样频率是4-6倍的最大频率语音信号时，压缩方案基本可以满足设计要求。

关键词: 矿井无线通信, 语音信号, 信号压缩方案, Systemview

Abstract:

　　　The characteristic of wireless transmission for mine is that it has big loss during transmission, short transmission distance, narrow transmission channel, big noise, limited transmission ability and low SNR(Signal Noise Ratio) of speech signal. Through analysis of the mine speech signal and noise signal, and based on the speech compression, this paper proposes a model for mine wireless voice signal compression. Using the real time communication system dynamic simulation software-Systemview to simulate the model of compression scheme and verify the feasibility of compression scheme. Test results show that: compression scheme can meet the design requirements when the speech signal frequency is in the range of 800-3000Hz and the sampling frequency is 4 to 6 times as the maximum frequency of speech signal.

Key words: mine wireless communication, speech signal, speech compression scheme, Systemview