| MELP语音算法在数字对讲机上的应用 |
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| 引用本文： | 贾松松,杜普选.MELP语音算法在数字对讲机上的应用[J].铁路计算机应用,2012,21(6):73-75,79. |
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| 作者姓名： | 贾松松 杜普选 |
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| 作者单位： | 北京交通大学 电子信息工程学院,北京,100044 |
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| 摘 要： | 针对如何寻求一种能够适合数字对讲机调制速率的声码器问题,本文提出了混合激励线性预测(MELP)算法.MELP语音编码算法对传统二元激励线性预测声码器做了改进,通过分析其关键技术,并与其它通信系统的声码器进行对比,对MELP应用于数字对讲机平台的可能性做了详细的论证,实验结果表明MELP算法在数字对讲机领域有着广泛的应用前景,这为数字对讲机的发展做出了新的探索.
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| 关 键 词： | 混合激励线性预测 线性预测编码 数字对讲机 ZSP400 |
| 收稿时间： | 2012-06-15 |
Application of MELP speech algorithm in digital private mobile radio |
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| JIA Song-song
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DU Pu-xuan.Application of MELP speech algorithm in digital private mobile radio[J].Railway Computer Application,2012,21(6):73-75,79. |
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| Authors: | JIA Song-song DU Pu-xuan |
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| Institution: | ( School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China ) |
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| Abstract: | How to find a vocoder which could fit modulation rate of digital radio was now a urgent problem. The mixed excitation linear predictor （MELP） algorithm with characteristics of low coding rate and high- quality voice provided the answer to this issue. MELP speech coding algorithm improved traditional two- source excitation LPC vocoder. This paper analyzed the key technologies. Compared with other commonly used vocoder in communication systems, the paper analyzed its advantage and made a detailed demonstration on possibility of applying MELP to digital radio platform. Experiement results showed that MELP speech algorithm had a wide application prospect in digital private mobile radio（DPMR）. It was made new discovery to the development of DPMR. |
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| Keywords: | mixed excitation linear predictor （MELP） linear predictor coding（LPC） digital private mobile radio（DPMR） ZSP400 |
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