The independent hypothesis between frames in vocal effect(VE) recognition makes it difficult for frame based spectral features to describe the intrinsic temporal correlation and dynamic change information in speech ph...The independent hypothesis between frames in vocal effect(VE) recognition makes it difficult for frame based spectral features to describe the intrinsic temporal correlation and dynamic change information in speech phenomena. A novel VE detection method based on echo state network(ESN) is proposed. The input sequences are mapped into a fixed-dimensionality vector in high dimensional coding space by reservoir of the ESN. Then, radial basis function(RBF) networks are employed to fit the probability density function(pdf) of each VE mode by using the vectors in the high dimensional coding space. Finally, the minimum error rate Bayesian decision is employed to judge the VE mode. The experiments which are conducted on isolated words test set achieve 79.5% average recognition accuracy, and the results show that the proposed method can overcome the defect of the independent hypothesis between frames effectively.展开更多
动物社会网络分析法(animal social network analysis,ASNA)是一套用于研究动物社会性、量化个体间各种社会关系、揭示个体行为与社会结构动态之间联系的工具,被广泛应用于多种动物类群的行为学研究。该分析方法所提供的一系列指标也非...动物社会网络分析法(animal social network analysis,ASNA)是一套用于研究动物社会性、量化个体间各种社会关系、揭示个体行为与社会结构动态之间联系的工具,被广泛应用于多种动物类群的行为学研究。该分析方法所提供的一系列指标也非常适用于探究动物的声音交流及鸣声结构。在此,本文首先简要介绍了网络分析法的基本概念及一些常用的指标;然后基于野外和室内研究实例,阐述了如何利用ASNA建立声音通讯网络、量化声音交流,以及将ASNA与被动声学监测技术相结合的应用前景;随后探讨了ASNA在分析鸣声相似性及鸣声地理变异中的优势;最后概述了ASNA在解析鸣声结构和句法规则中的应用。ASNA为研究动物通讯网络以及声音信号的适应性进化提供了新的视角和新的思路。展开更多
目的:评价早期喉癌激光术后对声带不同功能特征的影响。方法:通过计算机网页检索医学相关的主要数据库:PubMed、Web of Science和Embase数据库,由2位工作人员同时对搜索的相文献进行阅读和筛选,从筛选的文献中提取与研究目的相关的数据...目的:评价早期喉癌激光术后对声带不同功能特征的影响。方法:通过计算机网页检索医学相关的主要数据库:PubMed、Web of Science和Embase数据库,由2位工作人员同时对搜索的相文献进行阅读和筛选,从筛选的文献中提取与研究目的相关的数据。对提取的数据用Stata 14.0软件进行网状Meta分析,获取早期喉癌激光术后对声带不同声音特性的影响。结果:通过文献检索和筛选结果共纳入符合要求的文献9篇,统计学分析结果表明,激光手术治疗早期喉癌能够显著降低声嘶评估量表和嗓音障碍指数评估总分。结论:激光治疗早期喉癌术后,可以降低声嘶评估量表和嗓音障碍指数评估总分,提高术后声带总体功能,改善患者术后的生活质量,但喉癌术后早期声带在功能和生理方面没有明显的改善。展开更多
基金supported by the National Natural Science Foundation of China (61502150,61300124)the Foundation for University Key Teacher by Henan Province (2015GGJS068)+2 种基金the Fundamental Research Funds for the Universities of Henan Province (NSFRF1616)the Foundation for Scientific and Technological Project of Henan Province (172102210279)the Key Scientific Research Projects of Universities in Henan (19A520004)
文摘The independent hypothesis between frames in vocal effect(VE) recognition makes it difficult for frame based spectral features to describe the intrinsic temporal correlation and dynamic change information in speech phenomena. A novel VE detection method based on echo state network(ESN) is proposed. The input sequences are mapped into a fixed-dimensionality vector in high dimensional coding space by reservoir of the ESN. Then, radial basis function(RBF) networks are employed to fit the probability density function(pdf) of each VE mode by using the vectors in the high dimensional coding space. Finally, the minimum error rate Bayesian decision is employed to judge the VE mode. The experiments which are conducted on isolated words test set achieve 79.5% average recognition accuracy, and the results show that the proposed method can overcome the defect of the independent hypothesis between frames effectively.
文摘动物社会网络分析法(animal social network analysis,ASNA)是一套用于研究动物社会性、量化个体间各种社会关系、揭示个体行为与社会结构动态之间联系的工具,被广泛应用于多种动物类群的行为学研究。该分析方法所提供的一系列指标也非常适用于探究动物的声音交流及鸣声结构。在此,本文首先简要介绍了网络分析法的基本概念及一些常用的指标;然后基于野外和室内研究实例,阐述了如何利用ASNA建立声音通讯网络、量化声音交流,以及将ASNA与被动声学监测技术相结合的应用前景;随后探讨了ASNA在分析鸣声相似性及鸣声地理变异中的优势;最后概述了ASNA在解析鸣声结构和句法规则中的应用。ASNA为研究动物通讯网络以及声音信号的适应性进化提供了新的视角和新的思路。
文摘目的:评价早期喉癌激光术后对声带不同功能特征的影响。方法:通过计算机网页检索医学相关的主要数据库:PubMed、Web of Science和Embase数据库,由2位工作人员同时对搜索的相文献进行阅读和筛选,从筛选的文献中提取与研究目的相关的数据。对提取的数据用Stata 14.0软件进行网状Meta分析,获取早期喉癌激光术后对声带不同声音特性的影响。结果:通过文献检索和筛选结果共纳入符合要求的文献9篇,统计学分析结果表明,激光手术治疗早期喉癌能够显著降低声嘶评估量表和嗓音障碍指数评估总分。结论:激光治疗早期喉癌术后,可以降低声嘶评估量表和嗓音障碍指数评估总分,提高术后声带总体功能,改善患者术后的生活质量,但喉癌术后早期声带在功能和生理方面没有明显的改善。
