基于CELP的矿井无线透地通信语音压缩编码方案  

Voice Compression Coding Scheme of Mine Wireless Through-the-earth Communication Based on CELP

作　　者：陈玥如 陶晋宜[1] 赵红玉[2] 王鹏[1] 

机构地区：[1]太原理工大学电气与动力工程学院,山西太原030024 [2]喀什师范学院物理系,新疆喀什844006

出　　处：《煤矿安全》2015年第7期142-145,共4页Safety in Coal Mines

基　　金：山西省自然科学基金资助项目(2013011019-2)

摘　　要：针对矿井抢险救灾时语音在无线透地通信的信道中传输困难的问题,提出了采用码激励线性预测CELP（Code Excited Linear Prediction coding）作为矿井无线透地通信的语音压缩编码方案,以达到对语音信号预处理的目的。利用Mat Lab软件对本压缩方案进行仿真验证,仿真结果表明：采用的压缩方案,在保证译码后语音基本不失真且能主观识别的前提下,能够压缩的语音范围是：250-3 500 Hz,编码速率可低至4.6 kb/s,基本满足了矿井无线透地通信对语音压缩处理的要求。Aiming at the problem that it is hard to transmit voice in channels of mine wireless through- the- earth in the process of mine rescue,the Code Excited Linear Prediction Coding（ CELP） was proposed as the voice compression coding scheme of mine wireless through- the- earth communication to achieve the purpose of the voice signal preprocessing. The simulation results of this compression scheme by using Mat Lab showed that through this compression scheme,the voice frequency range that could be compressed of250 to 3 500 Hz and the transmission rate could be compressed down to 4. 6 kb / s on the premise of subjectively identifiable and undistorted voice. The results met the requirements of voice signal compression in mine wireless through- the- earth communication.

关 键 词：CELP 传输速率 矿井无线透地通信 语音压缩编码 抢险救灾 

分 类 号：TD655[矿业工程—矿山机电]