DSP语音控制器中MFCC参数的定点快速算法

本文介绍了一个基于定点数字信号处理器ＡＤＳＰ２１８１的语音控制器,着重讨论了其语音特征参数计算方法。     

实时计算机系统中的语音合成技术

本文首先讨论了在实时系统中处理语音信号的一般要求及方法，然后介绍了我们研制的基于ＴＣ８８３０ＡＦ单片语音合成芯片的智能语音卡，该语音卡能满足实时计算机系统对实时性的要求．     

综合语音开发的设计与实现

首先介绍了综合语音平台的基本概念和业务功能，然后详细讨论了如何利用电话语音卡来实现综合语音平台，并给出了硬件结构图和软件实现环境。     

基于数字信号处理器的逆变电源研究

介绍了基于数字信号处理器的逆变电路;重点分析了逆变电路的基本工作原理,数字信号处理器的特点和优点;并对数字信号处理器的逆变电路硬件进行了设计;给出了数字信号处理器的典型应用。     

小词表语音识别控制系统的研究

主要介绍一种基于定点数字信号处理器DSP芯片（TMS320VC5402）及51单片机构成的小词表语音识别实时控制系统。该系统体积小,成本低,可扩展性好。     

铁路行车计划电脑语音查询系统

介绍了电话语音卡的大致工作过程和原理，并给出了其在铁路行车计划的询问、回答系统中的一种应用。     

插值滤波器的DSP实现及有限字长效应分析

介绍了采用数字信号处理器实现插值滤波器的方法，分析了DSP处理器有限字长效给系统引入的误差。     

面向高校学生的缴费语音查询系统的开发与应用

介绍了采用TELELINK语音产生器和D081A语音卡,通过ODBC方式实时查询SQL Server学生收费数据库,实现缴费语音查询系统。     

G．729语音编解码算法的DSP系统实现

给出一个基于数字信号处理器的G．729语音编解码系统设计方法，重点对其中DSP芯片的AIC接口模块和PCI接口模块的设计作了论述，在对G．729编解码的实际测试中，取得了符合标准的语音编解码效果。     

数字语音记录仪的设计研究

用最新的语音数字信号处理器、常用单片机、大容量快速闪烁存储卡和编解码器，设计了一个数字语音记录设备。它记录时间长、话音 自然度和可懂度好，具有较高的性能价格比。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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