| 一种利用离散余弦变换频谱图和小波变换图像编码的语音编码算法 |
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| 引用本文： | 杜广超,刘广建,刘春茂.一种利用离散余弦变换频谱图和小波变换图像编码的语音编码算法[J].声学技术,2011,30(3):254-258. |
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| 作者姓名： | 杜广超 刘广建 刘春茂 |
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| 作者单位： | 河南济源63888部队,河南济源,454650 |
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| 摘 要： | 语音、图像编码技术是现代数字通信的核心技术,通常是分开进行的,提出了一种利用二维DCT频谱图和小波变换图像编码的语音编码算法.深入分析了算法实现的关键技术——语音信号的二维DCT频谱图,仿真实现了该编码算法,对一段语音的处理结果表明,小波分解系数置零率为83.1941％,压缩后保存能量92.0867％,合成语音达到“优...
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| 关 键 词： | 语音编码 图像编码 离散余弦变换(DCT变换) 滤波器组 小波变换 |
| 收稿时间： | 2010/4/23 0:00:00 |
| 修稿时间： | 2010/7/26 0:00:00 |
A speech coding algorithm by using DCT spectrum and wavelet transform image coding |
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| DU Guang-chao,LIU Guang-jian and LIU Chun-mao.A speech coding algorithm by using DCT spectrum and wavelet transform image coding[J].Technical Acoustics,2011,30(3):254-258. |
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| Authors: | DU Guang-chao LIU Guang-jian and LIU Chun-mao |
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| Affiliation: | DU Guang-chao,LIU Guang-jian,LIU Chun-mao(Unit 63888,PLA,Henan 454650,Jiyuan,China) |
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| Abstract: | Speech coding and image coding,as the core techniques of modern digital communication,are often inde-pendent of each other.A speech coding algorithm is put forward by using the DCT spectrum and wavelet transform im-age coding.Two dimensional DCT spectrum of the speech signal is analyzed,which is vital to the realization of the algo-rithm.This algorithm is demonstrated by simulation.Through processing a certain segment of speech,it shows that the synthetic speech is good when the zero proportion of wavelet d... |
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| Keywords: | speech coding Image coding Discrete Cosine Transform(DCT) filter-bank wavelet transform |
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