| 利用离散余弦变换的语音信号压缩方案 |
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| 引用本文： | 符晓娟,杨万全. 利用离散余弦变换的语音信号压缩方案[J]. 信息技术, 2006, 30(11): 74-76 |
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| 作者姓名： | 符晓娟 杨万全 |
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| 作者单位： | 四川大学电子信息学院,成都,610065 |
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| 摘 要： | 利用离散余弦变换后的语音信号能量主要集中在低频段的特点以及语音信号的短时平稳性，研究三种基于一维离散余弦变换的语音压缩方案。Matlab仿真结果表明三种方案的数据压缩率高，重建语音信号具有艮好的清晰度和自然度。
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| 关 键 词： | 离散余弦变换 语音信号 语音压缩 信噪比 |
| 文章编号： | 1009-2552(2006)11-0074-03 |
| 修稿时间： | 2006-05-08 |
Speech signal compression schemes based on discrete cosine transform |
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| FU Xiao-juan,YANG Wan-quan. Speech signal compression schemes based on discrete cosine transform[J]. Information Technology, 2006, 30(11): 74-76 |
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| Authors: | FU Xiao-juan YANG Wan-quan |
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| Abstract: | Making use of the features that the energy of speech signal is concentrated in low frequency after DCT and it has stability in short time,three speech compression schemes based on one-dimension DCT are researched.MATLAB simulative results indicate that their data compression ratio is high and the reconstructed speech signals have good quality. |
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| Keywords: | discrete cosine transform(DCT) speech signal speech compression signal-to-noise ratio |
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