嵌入式中文TTS系统的研究与实现

针对现今大规模语料库TTS系统要求有较大的存贮空间的特点,改进设计了一种基于双音素声韵母的嵌入式语音合成系统,并对其语音合成质量的提高采取了多种算法以及措施,使其可以顺利运行在存贮空间和运算速度都受限的嵌入式环境下,并尽可能的保证较高的语音合成质量。     

汉语语音合成技术综述

汉语语音合成技术经历了三十几年的发展,涌现出许多新技术、新模式.首先介绍了汉语语音合成系统的原理,在综合对比目前所有语音合成技术的基础上,以效果较好的合成技术为重点,对汉语语音合成系统的文本分析、韵律控制、语音合成、语料库的建立4个关键性模块的实现技术进行了详细论述.并针对嵌入式与PC下汉语语音合成系统的开发提出了通用的方案,为汉语语音合成系统的后续研究提供参考借鉴作用.     

用EP7211实现传呼信息实时语音合成和播放

阐述在一款集成传呼功能的二合一PDA系统中,使用嵌入式处理器EP7211实现个人传呼信息的实时语音合成和播放的功能,主要包括字符语音库的建立、字符语音合成算法和Codec语音中断服务例程等3部分。     

用EP7211实现传呼信息实时语音合成和播放

阐述在一款集成传呼功能的二合一PDA系统中,使用嵌入式处理器EP7211实现个人传呼信息的实时语音合成和播放的功能,主要包括字符语音库的建立、字符语音合成算法和Codec语音中断服务例程等3部分.     

深度学习语音合成技术综述

语音合成技术在人机交互中扮演着重要角色,深度学习的发展带动语音合成技术高速发展。基于深度学习的语音合成技术在合成语音的质量和速度上都超过了传统语音合成技术。从基于深度学习的声码器和声学模型出发对语音合成技术进行综述,探讨各类声码器和声学模型的工作原理及其优缺点,在此基础上对语音合成系统进行综述,系统综述经典的基于深度学习的语音合成系统,对基于深度学习的语音合成技术进行展望。     

基于声学统计建模的语音合成技术研究

该文介绍基于声学统计建模的语音合成技术,重点回顾中国科学技术大学讯飞语音实验室在语音合成领域这一前沿发展方向的创新性工作成果。具体包括 融合发音动作参数与声学参数,提高声学参数生成的灵活性;以最小生成误差准则取代最大似然准则,提高合成语音的音质;使用单元挑选与波形拼接方法取代参数合成器重构,改善参数语音合成器在合成语音音质上的不足。以上技术创新使得语音合成系统在自然度、表现力、灵活性及多语种应用等方面的性能都有进一步的提升,并推动语音合成技术在呼叫中心信息服务、移动嵌入式设备人机语音交互、智能语音教学等领域的广泛引用。     

语句级音调规律的研究与实现

本文首先讨论了人的发音规律, 然后介绍了在语句级上提高语音合成质量的小系统, 并对其实现过程进行了形式化描述, 最后给出了本系统已实现了的实例。     

基于嵌入式系统的服务机器人研究与开发

本文设计并实现了一种服务机器人系统,采用嵌入式系统,传感器阵列,语音识别与语音合成技术、无线数据通信技术,能够完成人脸跟踪、语音交互、自主移动、动作响应、远程遥控.实际实验表明,该机器人能够和人进行自然的交互,可以为人类提供一定的机器人服务功能.     

基于RTAI嵌入式Linux硬实时性能研究与实现

嵌入式Linux系统由于不支持硬实时任务,限制了其在电能质量监控系统等高实时性领域中的应用。本文介绍了嵌入式Linux系统的实时性,并利用RTAI(RealTimeApplicationInterface)对嵌入式uClinux系统进行了实时性扩展,将RTAI-Lin-ux双内核系统实际应用于电能质量监控实验平台,并通过与uClinux系统的对比实验验证了该系统的硬实时性能,证明其满足电能监控领域的实时性要求。     

基于流媒体的在线语音合成系统

利用流媒体技术实现了一个在线语音合成系统．能在Internet/Intranet上提供实时的在线语音合成服务．系统采用了自适应技术适应网络状况的变化，并利用动态带宽分配技术管理客户端连接．保证了客户端连接的合成语音质量．系统可应用于语音邮件、语音校对、远程教学等领域.     

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。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

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.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

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.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

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。