矿井无线透地通信中语音压缩技术探讨

发布时间：2018-06-29 14:14

本文选题：透地无线通信 + 语音压缩　；参考：《山西煤炭》2015年06期

【摘要】：针对矿井透地无线通信中语音传输存在的噪声干扰大、传输信道窄、实际传输距离有限等特点,通过比较现阶段的语音压缩技术,提出增量调制(delta modulation,DM)及其改进方案自适应增量调制(adaptive delta modulation,ADM)不适宜作为透地无线通信语音压缩的压缩编码方案;语音压缩感知(Compressed Sensing)作为一种新近提出的压缩编码方案,能够以远低于奈奎斯特采样速率采样压缩信号,虽然语音重建质量有限,编码复杂,技术难度高,目前不适宜作为透地无线通信语音压缩编码的方案,但是可能成为未来无线通信压缩技术;码激励线性预测CELP(Code Excited Linear Prediction coding)比较适合作为透地无线通信语音压缩编码方案。
[Abstract]:In view of the characteristics of large noise interference, narrow transmission channel and limited actual transmission distance in the wireless communication of underground mine, this paper compares the current speech compression technology. In this paper, delta modulation (DM) and its improved scheme, adaptive incremental modulation (adaptive delta), are proposed, which are not suitable for speech compression in transmissive wireless communications, and speech compression sensing is a newly proposed compression coding scheme. Being able to sample compressed signals at a rate far below Nyquist sampling rate, although the quality of speech reconstruction is limited, the coding is complex and the technology is very difficult, it is not suitable to be used as a scheme for speech compression coding in transmissible wireless communications at present. But it may become the future wireless communication compression technology, and Code excited Linear Prediction coding (CELP) is more suitable to be used as speech compression coding scheme for transmissible wireless communication.
【作者单位】：喀什大学物理与电气工程学院;
【分类号】：TD65;TN912.3

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