| 基于TMS320C5402的CVSD编解码实时实现 |
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| 引用本文： | 李利,杨红强,高山.基于TMS320C5402的CVSD编解码实时实现[J].华北航天工业学院学报,2008(5). |
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| 作者姓名： | 李利 杨红强 高山 |
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| 作者单位： | 北华航天工业学院;衡水学院数学系; |
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| 基金项目： | 河北省教育厅基金项目(2005351) |
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| 摘 要： | 本文讨论了连续可变斜率增量调制(CVSD)语音编解码算法的原理及其特点,并在MATLAB中进行了仿真,结果表明,选择合适的量阶初值,量阶能够自动地随输入信号平均斜率的大小而连续变化,解码后的输出能够很好的逼近原始输入语音信号。最后,讨论了连续可变斜率增量调制算法(CVSD)在TMS320C5402实时实现过程中软、硬件的设计。
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| 关 键 词： | 连续可变斜率增量调制 数字信号处理器 语音处理 |
Real-Time Implementation of CVSD Based on TMS320C5402 |
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| LI Li YANG Hong-qiang GAO Shan.Real-Time Implementation of CVSD Based on TMS320C5402[J].Journal of North China Institute of Astronautic Engineering,2008(5). |
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| Authors: | LI Li YANG Hong-qiang GAO Shan |
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| Institution: | LI Li1 YANG Hong-qiang2 GAO Shan1(1.North China Institute of Aerospace Engineering,Langfang 065000,China,2.Department of Mathematic,Hengshui University,Hengshui 053000,China) |
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| Abstract: | In this paper,the principle and advantage of CVSD speech codec(encoder and decoder)is introduced.The simulation experiments have proved that the quantified phase continuously changes with the mean value of the slope in the signal,which ideally approaches to the input signal.At last,the hardware and software design of CVSD Real-Time Implementation based on TMS320C5402 chip are described in this paper. |
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| Keywords: | continuously variable slope delta modulation digital signal processor speech processing |
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