Introduction To Mobile Telephone Systems: 1G, 2G, 2.5G, and 3G Wireless Technolo...

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微软亚洲研究院论文：移动自组网中的基于服务质量的资源查找系统-Microsoft Asia Research Institute Papers : Since the mobile network based on the quality of service resource locator system

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With the advent of multimedia, digital signal processing (DSP) of sound has emerged from the shadow of bandwidth-limited speech processing. Today, the main appli- cations of audio DSP are high quality audio coding and the digital generation and manipulation of music signals. They share common research topics including percep- tual measurement techniques and analysis/synthesis methods. Smaller but nonetheless very important topics are hearing aids using signal processing technology and hardware architectures for digital signal processing of audio. In all these areas the last decade has seen a significant amount of application oriented research.

一款可以对网络传输的语音中的DTMF进行解码，内含源代码，无需硬件支持，全部软件实现-network transmission of voice for the DTMF decoder, containing the source code without hardware support, All software

蓝牙基础的外文文档，讲解的比较基础，从各个方面介绍蓝牙，适合想了解蓝牙的朋友-Bluetooth-based foreign-language documents to explain the basis of comparison, from the introduction in all aspects of Bluetooth, for Bluetooth would like to know friends

很详细的程序，有图，有注释介绍，各个步骤的介绍都有，是英文的。欢迎下载，希望对大家有用。

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世界各地的盲人学生需要指导，在城市或大学校园中导航。据估计 374,400 视障的学生出席了在一些点在单独美国院校。科技进步日新月异，新的机会不断涌现，使生活更容易为盲人学生。以问题为动力，此项目的目标是设计、 原型和评价一个智能指导系统，帮助盲人导航从和到教室里的学生。若要设计这样一个系统，设计团队不得不行使通常涉及的工程设计过程的几个设计步骤。这些步骤包括文学研究、 需求规格说明、 解决方案集思广益、 系统功能分解、 功能建模、 原型执行和测试。所设计的系统包括两个完全集成模块 ；移动应用程序和智能的甘蔗。盲学生与使用语音命令的移动应用程序进行交互。盲学生可以指示移动应用程序导航他到理想的目的地 （eg.教室）。另一方面，手杖帮助盲人学生避免障碍，并提醒他/她脱离轨道行走时。甘蔗和移动应用程序是通过蓝牙技术同步。该系统是采用模块化设计、 测试和最后集成在一起。测试表现出有希望的结果和被证明是有益于社会的这种重要的部门