基于Mel倒谱特征顺序统计滤波的语音端点检测算法

为提高噪声环境下语音端点检测的准确性,提出一种基于Mel倒谱距离顺序统计滤波的端点检测算法.该算法首先提取每帧语音信号的Mel频率倒谱系数,以前16帧估算背景噪声,计算每帧语音与背景噪声的倒谱距离;然后将当前帧前后相继若干帧的倒谱距离,经过一组顺序统计滤波器得到加权倒谱距离;最后根据各帧加权倒谱距离对输入语音进行分类.在TIMIT语音库上的实验结果表明,该方法在白噪声、粉噪声、汽车噪声和战斗机噪声等噪声环境下,均能得到理想的端点检测结果,且在低信噪比时依然有效.     

清末书院到学堂的现代化转换--以广雅书院为中心

许多研究者将清末书院到学堂转换的原因归结为“社会的转型与自身的腐败”，但“社会转型”由于关注过于粗略而有所忽略历程；“自身腐败”则不足以表述初始转换的真实。相反，书院是在对社会转型的适应突破、内化吐纳和自身产生新生因素中实现现代化转换的。这一转换显示了事物初始转换的真实状态和转换的背后逻辑。广雅书院是实践这种转换的一个范例。     

老舍短篇小说的叙述视角

作为文坛大家的老舍在其短篇小说的创作中形成一种独特的叙述腔调,即坚持以人物为叙述视角,采用外视角的双向流动的叙述方式,由此体现出个体生命的内部活动,完成对人物的全方位塑造.     

浅谈厨房设计

概述厨房内部平面布置 4种类型的特点与适用条件 ,厨房的 3大空间要求 ,对厨房给排水材料的选择以及装修时需注意的 4个方面 .     

Brownjohn,Hughes, Pirrie,and Rosen: What Rhymes with Oral Writing?

This article looks at the work of four writers who have had considerable influence on the teaching of poetry writing to primary school children. Each writer is considered in terms of their merits as a contributor to wider questions about writing, and in comparative terms with each other. Links are made between these writers' explicit and implicit philosophies and approaches. Finally, the article considers how far discussions about voice and form within children's writing are necessarily exclusive of each other.     

Teachers’ voice,power and agency: (un)professionalisation of the early years workforce

This article examines Slovak early years teachers’ concerns with conceptions of teacher professionalism. It suggests that there is a mismatch between understandings of professionalism, policy aspirations and the attitudes of teachers to their own professionalism, and that this mismatch fuels early years teachers’ sense of agency. These tensions between conceptions of professionalism, teaching practice and actual working conditions have led to a ground-up approach to self-governance within the early years teacher workforce. We analyse teachers’ discussions in an early years online forum of 12,500 members that was started and remains governed by the teachers themselves. It represents in itself a very particular attitude and response to the need to determine what it means to be a professional teacher. This analysis examines intersections of policy, quality and professionalism, and highlights considerations of power and voice, and the complexities of uncertainty and change. The article concludes with the suggestion that teacher attitudes, power and agency are impacted in unpredictable ways by the policy landscape.     

Narrative inquiry and the problem of representation: ‘giving voice’, making meaning

In this article, the author argues that the exploration of alternative forms of research representation can result in new possibilities for making meaning in educational research. Narrative inquiry as a methodology has become established as an approach in education but remains contested in many ways. How we come to an understanding of such research findings and in particular how the issues of voice and representation are resolved are subject to much debate. Here, the author proposes that using fictive methods of representation of research, particularly poetry, can have implications for the ways in which meaning is made and therefore the possible meanings that can be made. Further, this article argues that the poetic form allows for the inclusion of many voices and stories in a non-hierarchical manner, making the author's influence explicit without it being dominant. Researchers have argued for poetic representations of research data as a means to evoke the participants' experience whilst making the author's influence explicit; here, it is argued that poetry can be utilized to provide a fuller representation of the research, placing the voice of the participants, the researcher and the literature on an equal level within the whole story of the research project. This article first details narrative inquiry as a methodological approach and its particular application to educational research before discussing the issues surrounding voice and representation. Subsequently, fictive forms of representation are explored as a means of addressing these issues.     

基于自我保护动机的内隐建言信念对员工沉默的影响——一项中国情境的研究

组织中普遍存在的员工沉默,对组织和员工的良性发展均存在极大的负面影响。从社会认知视角出发,实证检验了基于自我保护动机的内隐建言信念与员工沉默行为的关系,并立足本土情境,考察了中庸思维和上下属关系在该过程中所起的作用。结果显示,基于自我保护动机的内隐建言信念对默许沉默、防御沉默和漠视沉默均具有显著的正向作用。中庸思维和上下属关系是内隐建言信念影响员工沉默重要的边界条件,表现为中庸思维调节了内隐建言信念与防御沉默和漠视沉默的正向关系,员工的中庸思维程度越高,内隐建言信念与防御沉默和漠视沉默的正向关系越强;上下属关系调节了内隐建言信念与默许沉默和漠视沉默的正向关系,员工与领导的上下属关系越强,内隐建言信念与默许沉默和漠视沉默的正向关系越强。     

中学音乐教学中的练声问题

中学音乐教学中歌唱发声训练是一项细致又复杂的教学工作,不同的年龄阶段有不同的发声训练要求,在当前中学音乐教学的练声方面存在着“成人化”、“专业化”的现象。应根据中学生的年龄和心理特点,科学进行声音训练。     

基于单片机的公交车自动报站器的设计

本文介绍了设计使用AT89S51单片机作为控制核心的公交车自动报站器,通过控制ISD4004语音芯片的语音录放和LED显示汉字的功能,实现了公交车自动报站器的语音报站和汉字显示功能。介绍了语音报站部分、汉字显示部分、键盘控制部分的硬件电路图和软件程序的编写,并对最小系统的软硬件做了简单介绍。