| 一种2/4线话音接口的设计与实现 |
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| 引用本文： | 姚培,杨晓峰,曾宏辉.一种2/4线话音接口的设计与实现[J].电力系统通信,2007,28(5):63-66. |
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| 作者姓名： | 姚培 杨晓峰 曾宏辉 |
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| 作者单位： | 1. 解放军理工大学,通信工程学院研三队,江苏,南京,210007
2. 解放军理工大学,工程兵工程学院机械系,江苏,南京,210007 |
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| 摘 要： | 文章介绍了一种2/4线话音接口和回波抵消器的设计与实现方案,该方案实现了2/4线的话音接口,包括A/D、D/A变换,ADPCM编解码,自适应回波抵消等。其中,ADPCM编解码和回波抵消器是基于FPGA使用VHDL语言编写实现的。测试表明,该接口电路以较小的资源消耗,提供了优异的话音通信质量,在电力系统话音通信中具有重要的实用价值。
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| 关 键 词： | 2/4线转换 回波抵消 自适应差分脉冲编码调制 VHDL |
| 文章编号： | 1005-7641(2007)05-0063-04 |
| 修稿时间： | 2006-08-30 |
Design and implementation of 2/4 lines speech interface |
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| YAO Pei,YANG Xiao-feng,ZENG Hong-hui.Design and implementation of 2/4 lines speech interface[J].Telecommunications for Electric Power System,2007,28(5):63-66. |
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| Authors: | YAO Pei YANG Xiao-feng ZENG Hong-hui |
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| Affiliation: | 1. Postgraduate Team 3 ICE, PLA University of Science and Technology, Nanjing 210007, China; 2. Department of Mechanism, PLA University of Science and Technology, Nanjing 210007, China |
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| Abstract: | This paper introduces the design and implementation of 2/4 lines speech interface and echo canceller.This 2/4 lines speech interface includes A/D,D/A conversion,ADPCM coding and decoding,and adaptive echo canceller etc.The adaptive echo canceller is designed by using FPGA based on VHDL.The test has indicated that the project can provide excellent voice quality with less resource consumption.It is with great value for power telecommunication. |
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| Keywords: | 2/4 lines conversion echo canceller ADPCM VHDL |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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