民生与民声:关系及意义

民生作为人民群众最基本的物质和精神权益之体现,是社会发展的根本.民声是民生的反映,是民意对民生的表达和期盼.民生和民声,互相联系、相互作用,在国家社会发展中意义重大,关系到国家和社会的稳定和发展,关系到我国的国际形象和地位,关系到我国社会主义和谐社会的实现     

利用线性预测谱LPC对元音区别力量化分析的研究

本研究利用LPC对10位发音人的正常单元音相同声调（a、o、e、i、u、ü）进行识别测试,进一步探讨LPC提取出来的各个参数对于区分说话人的作用。提取元音最平稳的一段进行长时LPC分析,分析不同人的语声声纹差异性和同一人语声声纹的总体特殊性。结果显示,每个话者的自身差异都明显小于话者之间的差异。因此利用LPC提取元音的共振峰振幅与相邻弱谷幅值之差对比分析对话者具有有效区别力。     

不同通信系统下的说话人识别探究

目的研究不同通信系统条件下,利用语音进行说话人识别的基本假设＂个体之间的语音差异大于个体自身的语音变异＂是否成立。方法选择宽带语图差异较大的不同通信系统下语音进行比对及差异的统计。结果发现说话人识别的基本假设在不同通信系统条件下成立。结论得出了不同通信系统条件下进行说话人识别的方法与判阈。     

辅音的声学特征在声纹鉴定中的应用研究

针对汉语普通话辅音的声学特征进行个体特性的声学研究,提取能量集中区、过渡音征、送气辅音的嗓音起始时间值等三种特征参数,以最终确定它们能否作为稳定的个体特征参数在声纹鉴定中应用。     

Role of voice in the legal process*

As communities face unrest and protest because of perceived racial bias and decreased trust and confidence in the criminal justice system, it is critical to explore mechanisms that foster institutional legitimacy. Voice is a central element in the procedural justice framework because it is anticipated to promote process control as well as a shared understanding between institutions and communities. As a concept, however, voice is undertheorized. Measures of voice used in legitimacy research may result in oversimplification of the concept, not fully capturing the struggles disadvantaged people face in trying to exercise influence in the court system. Through the use of rich data from qualitative interviews with youth and families involved in the juvenile justice system and in‐depth observations of juvenile court events, we explore what voice is, the mechanisms through which people try to assert voice, and how voice matters in the legal process. Respondents sought voice for many reasons, including to validate their experiences, to affirm their membership in a community, and to assert concerns about perceived police misconduct. Contrary to traditional conceptualizations of voice as a static event (e.g., having voice or not having voice), voice was a process of negotiating dialogue between court officials and court participants throughout the legal process.     

电视时政新闻报道实证研究三题

本文聚焦于重庆电视媒体的时政新闻报道,从具体业务切入,对其进行了比较系统的实证研究。首先从文化品位的角度。围绕片头、播音员、栏目设计、文字、声音和画面等具体业务,探讨了地方主流电视台的定位。其次针对电视时政新闻报道缺少同期声、缺乏真实性和现场感、违背电视新闻"声画合一"要求的积弊,提出了解决的措施。最后集中阐述了创造电视时政新闻报道精品的具体途径和办法。文章立足于电视时政新闻报道实例基础之上,对电视时政新闻报道业务工作的改进,具有一定的现实指导意义。     

VoIP G.723.1语音算法的优化与实现

提出一种VoIP G.723.1双速率语音算法汇编优化及其DSP实现方法。通过阐述G.723.1信源编码的实现过程,讨论纯C代码在DSP平台上运行速度慢的原因。对关键代码全汇编优化以及优化过程的同步调试,采用该方法的优化结果和预期优化结果基本符合。FIFO环形缓冲区可以实现实时语音播放和IP-Phone,PESQ测试结果表明系统满足VoIP语音的质量要求。     

The Shifting Tides of Pacific Regionalism

Abstract

The current state of Pacific regionalism is faced with a range of external and internal factors that are acting to reshape the region and which call for a rethinking of Pacific regionalism. Within this context a range of new and in some cases reinvigorated groupings of political actors have emerged, seeking to influence and shape the region. Interpretations of this plurality of political groupings differ, with some authors seeing it as a direct challenge to the previously existing regional order, while others argue it signals a return to a foundational Pacific voice in regional politics. This article suggests that the present plurality is more than resituating a ‘Pacific voice’ and is not necessarily a challenge to the existing order. Rather, the Pacific’s experience mirrors global trends in the evolution of regionalism as a practice, in which network diplomacy or coalition-building across the plethora of actors will become a predominant feature of new regionalism. Further, the authors argue that the Framework for Pacific Regionalism provides the platform for effectively navigating this new context through facilitating the politics of networks and coalitions to drive the shared interests of the region, and presents a shared platform to test paradigm-shifting ideas.     

The Accuracy of Auditors' and Layered Voice Analysis (LVA) Operators' Judgments of Truth and Deception During Police Questioning*

The purpose of this study was to determine if auditors could identify truthful and deceptive persons in a sample (n = 74) of audio recordings used to assess the effectiveness of layered voice analysis (LVA). The LVA employs an automated algorithm to detect deception, but it was not effective here. There were 31 truthful and 43 deceptive persons in the sample and two LVA operators averaged 48% correct decisions on truth‐tellers and 25% on deceivers. Subsequent to the LVA analysis the recordings were audited by three interviewers, each independently rendering a decision of truthful or deceptive and indicating their confidence. Auditors' judgments averaged 68% correct decisions on truth‐tellers and 71% on deceivers. Auditors' detection rates, generally, exceeded chance and there was significantly (p < 0.05) greater confidence on correct than incorrect judgments of deceivers but not on truth‐tellers. These results suggest that the success reported for LVA analysis may be due to operator's judgment.     

声纹鉴定中普通话音素间过渡方式特征研究

不同人所讲的普通话语流中相邻音素间的过渡方式分为不同的类型.音节内辅音-元音之间、音节间元音-辅音之间的过渡方式分为清晰过渡(或停顿过渡)和模糊过渡(或缓冲过渡)两种类型;音节内元音-辅音之间的过渡方式分为间断过渡和连续过渡两种类型;音节内元音-元音之间的过渡方式分为平滑过渡、间断过渡、交错过渡和异变过渡四种类型.对同...