西华大学学报（自然科学版）2017，Vol.36Issue(2)：24-27,4.DOI:10.3969/j.issn.1673-159X.2017.02.05
语音信号压缩感知观测矩阵的对比研究
A Comparative Study on Observation Matrix of Compressed Speech Signal
摘要
Abstract
In the study on compressed sensing of speech signal,the observation matrix is very important for data sampling and signal reconstruction.A useful observation matrix can make the original speech signal to be projected onto a lower dimensional space with all the useful information of the signal.And the signal can be reconstructed with proper algorithms.This paper introduced the theory of speech signal compression and compared several common performance indexes of observation matrix.Finally,it was suggested how to select the observation matrix under different experimental conditions.The experimental results show that compression ratio and frame length are key factors in selecting observation matrix.Selecting observation matrix according to different compression ration and frame length will be helpful to achieve better speech reconstruction effect.关键词
语音信号/压缩感知/观测矩阵/压缩比/帧长Key words
speech signal/compressed sensing/observation matrix/compressionratio/frame length分类
信息技术与安全科学引用本文复制引用
强策,夏凌,李光瑞..语音信号压缩感知观测矩阵的对比研究[J].西华大学学报（自然科学版）,2017,36(2):24-27,4.基金项目
教育部春晖计划项目(Z2015113) （Z2015113）
四川省科技支撑计划项目(2015JY0138). （2015JY0138）
