| 基于压缩感知观测序列倒谱距离的语音端点检测算法 |
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| 引用本文： | 叶蕾,孙林慧,杨震.基于压缩感知观测序列倒谱距离的语音端点检测算法[J].信号处理,2011,27(1):67-72. |
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| 作者姓名： | 叶蕾 孙林慧 杨震 |
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| 作者单位： | 南京邮电大学通信与信息工程学院 |
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| 基金项目： | 国家管理局自然科学基金项目，南京邮电大学校科研基金青蓝计划项目，"宽带无线通信与传感网技术"教育部重点实验室资助，江苏省普通高校研究生科研创新计划 |
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| 摘 要： | 本文基于语音信号在离散余弦基上的近似稀疏性，采用稀疏随机观测矩阵和线性规划重构算法对语音信号进行压缩感知与重构。研究了语音信号的压缩感知观测序列特性，根据语音帧和非语音帧压缩感知观测序列频谱幅度分布分散且差异较大的特性，提出基于压缩感知观测序列倒谱距离的语音端点检测算法，并对4dB-20dB下的带噪语音进行端点检测仿真实验。仿真结果显示，基于压缩感知观测序列倒谱距离的语音端点检测算法与奈奎斯特采样下语音的倒谱距离端点检测算法一样具有良好的抗噪性能，但由于采用压缩采样，减少了端点检测算法的运算数据量。
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| 关 键 词： | 端点检测 压缩感知 倒谱距离 |
| 收稿时间： | 2010-07-09 |
Endpoint Detection Algorithm Based on Cepstral Distance of Compressed Sensing Measurements of Speech Signal |
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| YE Lei,SUN Lin-hui,YANG Zhen.Endpoint Detection Algorithm Based on Cepstral Distance of Compressed Sensing Measurements of Speech Signal[J].Signal Processing,2011,27(1):67-72. |
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| Authors: | YE Lei SUN Lin-hui YANG Zhen |
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| Affiliation: | College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications |
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| Abstract: | Based on the approximate sparsity of speech signal in discrete cosine basis,Compressed Sensing theory is applied to compress and decompress speech signal in this paper,that is,speech signal is projected to a sparse random measurement matrix and reconstructed by Linear Program.Features of compressed sensing measurements of speech signal is researched in this paper.According to the decentralization characteristic of amplitude spectrum distribution of compressed sensing measurements of speech signal and differ... |
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| Keywords: | endpoint detection compressed sensing cepstial distance |
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