基于PSOLA与DCT的情感语音合成方法

情感语音合成可以增强语音的表现力,为使合成的情感语音更自然,提出一种结合时域基音同步叠加(PSOLA)和离散余弦变换(DCT)的情感语音合成方法。根据情感语音数据库中的高兴、悲伤、中性语音进行韵律参数分析归纳情感规则,调整中性语音各音节的基音频率、能量和时长。使用DCT方法对基音标记过的语音段进行基音频率的调整,并利用PSOLA算法修改基音频率使其逼近目标情感语音的基频。实验结果表明,该方法比单独使用PSOLA算法合成的情感语音更具情感色彩,其主观情感的识别率更高,合成的情感语音质量更好。     

人脸语音动画中基于PSOLA的情感语音合成系统

提出一种基于时域基音同步叠加TD-PSOLA算法的情感语音合成系统。根据情感语音库分析总结情感规则,在此基础上利用TD-PSOLA算法对中性语音的韵律参数进行改变,并提出一种能够对基频曲线尾部形状改变的方法,使句子表达出丰富的情感。实验表明,合成出的语音具有明显的情感色彩,证明了该系统能以简单明了的方式实现情感语音的合成,有助于提高人脸语音动画表达的丰富性和生动性。     

基于指数加权的基音平滑算法

提出了一种用于语音合成的语音片断基音平滑技术。在基于波形拼接的语音合成中,一般使用TD-PSOLA算法进行基频和时长的修改,但是用传统的TD-PSOLA算法进行的基频修改是针对片断整体而言,所以仍然不能很好的解决语音合成中的拼接单元之间的基频不连续问题,特别是在片断接合处。由于基元片断提取白不同语境的语料,合成语音听起来明显感觉到音高的不自然。对传统的TD-PSOLA算法进行了改进,以基音周期为间隔对语音片断信号进行分帧,通过指数加权相应帧的方法来进行平滑处理,经听音测试,较好的解决了拼接片断间的不连续现象。     

基于TD—PSOLA普通话韵律参数修改的实现

在普通话文语转换系统中,如何精确控制韵律参数修改是关系到合成语音质量的关键.根据汉语普通话的韵律特征,采用TD-PSOLA算法,精确实现了的韵律参数的修改.用分时段直线韵律参数模型,动态生成基音轮廓,计算出合成基音标记,一次性实现基频尺度修改和时间尺度的修改.根据自然语音与模拟合成出来的语音韵律参数比较分析表明,能有效地控制韵律参数,达到预期的参数合成目标,并且具有较高质量.也可以进行进行参数合成运算量少,控制参数精确,合成语音清晰自然.     

汉语语音的时域声调转换方法

简要地介绍了用于语音分析合成的时城基音同步叠加算法，在此基础上提出一种汉语语音时域声调转换方法。利用这种方法可以将一种声调的语音转换为另一种声调的语音，除微小的音质降低外，仍可保持较好的语音质量。这种方法直接对语音波形进行处理，具有计算简单、能在一般微型计算机上进行实时的特点。将之用于语音合成系统，可以通过相同声韵母的音节只存储一种声调的语音数据而大大降低音库的容量；用这种方法按照汉语语句的语调变化规律来合成语句，还可以较好地改善汉语语句合成的自然度．     

语音信号的基音标注算法

阐述了一种连续语音的最大幅度的基音标注算法，这种算法运用自相关算法原理和动态编程的思想，不必区分清音区域和浊音区域，能在一段连续的语音信号中自动地标记基音位置，实验证明，这种算法对基音同步叠加合成系统的语音分析很有用途。     

藏语天气预报语音合成系统的初步研究

本文是对于藏语天气预报的语音合成系统的简单研究,针对藏文的特殊性设计相应的语料库以及韵律参数库、合成参数库,提供基音同步叠加算法（PLOSA）需要的修改因子,通过修改时长、基频等参数最终实现语音的合成。     

一个实用的汉语文语转换系统

本文首先简述语音合成技术和文语转换系统（TTS：Text to Speech)的基本原理,而后介绍一种可用来进行韵律修正的基音同步叠加算法（PSOLA）,最后介绍调素论在系统中的应用,使合成语音的自然度得以提高。     

可发多种方音调的语音合成系统

本文运用时域基音同步叠加的合成方法，用汉语普通语的无调音节库，合成出了包括普通话在内的五种地方官话腔调的合成语音；同时应用变调规则、轻志规则、音长规则和句型规则，对合成语句的音高和音长进行调整，改善了该语音合成系统输出语句的自然度。     

基于小波变换的汉语语音合成方法

本文提出了一种汉语语音合成的方法．利用小波变换检测语音信号的声门闭合时刻（ＧＣＩ）利用语言信号的ＧＣＩ进行基音同步和样本选择的多脉冲线性预测分析，将得到的时参数保存到语音库中，通过改变相应的语音参数可以灵活地调节音节的时长，基音频率简强，本方法得到一语音参数比传统方法得到的参数更加精确，合成语音清晰，自然，并且大大降低了语音库的存储量，非常适合小于微型计算机系统。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。