| 基于NIOS的无中心电话系统中噪声的分析与抑制 |
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| 引用本文： | 张长喜,丁晓明,高同海. 基于NIOS的无中心电话系统中噪声的分析与抑制[J]. 电声技术, 2005, 0(8): 59-62 |
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| 作者姓名： | 张长喜 丁晓明 高同海 |
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| 作者单位： | 北京交通大学,信息科学研究所,北京,100044 |
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| 摘 要： | 在Ahera的FPGA开发平台上，使用Nios软核处理器构建无中心电话系统。重点介绍如何运用数字信号处理理论，在Matlab平台上分析硬件电路仿真时出现的语音噪声，并提出了解决方案。
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| 关 键 词： | 共线电话 样点交织 多速率信号处理 |
| 文章编号： | 1002-8684(2005)05-0059-04 |
| 收稿时间： | 2005-02-17 |
| 修稿时间： | 2005-02-17 |
Noise Analysis and Its Solution in No-Center-Switch Phone System Based on NIOS |
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| ZHANG Chang-xi,DING Xiao-ming,GAO Tong-hai. Noise Analysis and Its Solution in No-Center-Switch Phone System Based on NIOS[J]. Audio Engineering, 2005, 0(8): 59-62 |
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| Authors: | ZHANG Chang-xi DING Xiao-ming GAO Tong-hai |
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| Affiliation: | Information Science Institute, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | Construction of the No-Center-Switch phone system by using Nios soft processor on Altera's FPGA platform is proposed.The speech noise emerging from the hardware is strictly analyzed in MatLab with DSP theory.Two feasible solutions are proposed and one of which has lower cost and better performance. |
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| Keywords: | NI0S |
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