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[Voice Compress] G.723.1-Annex-A-199611-I

Description: ITU-T G.723语音压缩编解码算法源码和测试语音，内有标准附件和使用说明。-ITU-T G.723 voice compression codec algorithm source code and test voice, within the standard accessories and use.
Platform: | Size: 1700649 | Author: 阙劲峰 | Hits:

[VOIP program] h323V5consented

Description: 2003年最新版ITU-T H.323协议全文，为H.323IP电话系统开发工作提供最权威、最直接的指导。-2003 the latest version of the ITU-T H.323 transcript of H.323IP telephone systems development work to provide the most authoritative and most direct guidance.
Platform: | Size: 1799301 | Author: 姓名 | Hits:

[Multimedia program] h264_cabac

Description: The Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG are finalising a new standard for the coding (compression) of natural video images. The new standard [1] will be known as H.264 and also MPEG-4 Part 10, “Advanced Video Coding”. The standard specifies two types of entropy coding: Context-based Adaptive Binary Arithmetic Coding (CABAC) and Variable-Length Coding (VLC). This document provides a short introduction to CABAC. Familiarity with the concept of Arithmetic Coding is assumed (see chapter 8 of [2] for an introduction to Arithmetic Coding).-The Joint Video Team (JVT) of ISO / IEC MPEG and the ITU-T JTC 1 are Finalizing a new standard for the coding (compression) of natural video images. The new standard [1] will be known as H.264 and MPEG also -4 Part 10, "Advanced Video Coding." The standard specifies two types of entropy coding : Context-based Adaptive Binary Arithmetic Coding (CABAC) and Variable-Length Coding (VLC). This document provides a short introduction to CABAC. Familiarity with the concept of Arithmetic Coding is assumed (see chapter 8 of [2] for an introduction to Arithmetic Coding).
Platform: | Size: 14784 | Author: lucy | Hits:

[Streaming Mpeg4] H.264MPEG-4AVCRealTimeImplementationonDSP

Description: H.264/MPEG-4 AVC is the latest generation standard from the ITU-T and ISO/IEC MPEG standardization bodies and it builds on the success of the previous ITU-T and MPEG standards. H.264/MPEG-4 AVC offers major advantages compared with previous standards, among them its high compression efficiency, although it demands a high degree of computational complexity to be able to make use of the advantages of its new techniques. In this paper several implementation issues of the H.264/MPEG-4 AVC standard have been reviewed, dealing with some of the real time challenges that appear on this kind of implementation. This implementation is to be executed on a general purpose DSP conforming with the requirements of the broadcast environments and should provide very important advantages over an MPEG-2 Encoder system.
Platform: | Size: 254690 | Author: 小飞 | Hits:

[WEB Code] H.261

Description: ITU-T H.261 视频编解码协议的最新标准文档.-ITU-T H.261 video codec standard agreement on the latest documents.
Platform: | Size: 201436 | Author: 王博 | Hits:

[Voice Compress] g.729codec

Description: G.729音频编解码协议的标准文档和标准参考代码(ITU-T提供),包括编码和解码,纯C实现,未优化.-G.729 audio codec standard agreements documentation and reference code standards (ITU-T), including encoding and decoding, and pure C realized, not optimization.
Platform: | Size: 2227985 | Author: 王博 | Hits:

[Communication] T_REC_H_264

Description: ITU-T Rec H.264 文档, 2005年3月最新版.-ITU-T Rec H.264 documents, in March 2005 the latest version.
Platform: | Size: 1573736 | Author: 李小钱 | Hits:

[Other resource] H.263_Intro

Description: H.263视频编码对于ITU-T H.263视频压缩标准的介绍: 概念, 特征和实现 1. 介绍 H.263标准是由国际电信联盟(ITU)发布的,对视频会议和视频电信应用提供视频压缩(编码).在这个指南中,我们会介绍关于H.263的概念和特征,并描述一些实现的实例. -H.263 video coding for the ITU-T H.263 video compression standard introduction : Concepts, features and achieve a. H.263 standard is introduced by the International Telecommunication Union (ITU) released, for video conferencing and video telecommunications applications for video compression (encoding). in this guide, we will introduce H.263 on the concept and characteristics, and describes some examples of achievement.
Platform: | Size: 8401 | Author: grant | Hits:

[Communication] v90rec9809

Description: ITU-T Recommendation V.90 98年9月版本 A DIGITAL MODEM AND ANALOGUE MODEM PAIR FOR USE ON THE PUBLIC SWITCHED TELEPHONE NETWORK (PSTN) AT DATA SIGNALLING RATES OF UP TO 56 000 bit/s DOWNSTREAM AND UP TO 33 600 bit/s UPSTREAM-ITU-T Recommendation V.90 September 98 version A DIGIT AL MODEM AND ANALOGUE MODEM PAIR FOR USE ON THE PU Blic SWITCHED TELEPHONE NETWORK (PSTN) AT DATA SIGNALING RATES OF UP TO 56,000 bit / s DOWNSTREA M AND UP TO 33,600 bit / s UPSTREAM
Platform: | Size: 219682 | Author: 李小钱 | Hits:

[Communication] v250rec9905

Description: ITU-T RECOMMENDATION V.250 SERIAL ASYNCHRONOUS AUTOMATIC DIALLING AND CONTROL 99年5月版本-ITU-T RECOMMENDATION V.250 SERIAL ASYNCH RONOUS AUTOMATIC DIALING AND CONTROL May 99 version
Platform: | Size: 303604 | Author: 李小钱 | Hits:

[Windows Develop] DR_TOOL

Description: 　ASN．1（Abstract Syntax Notation One）是由ITU－T制定的，符合以上三点要求。它定义的编码规则（如BER、PER）就相当于从局部语法到传送语法之间的转换规则。目前，很多网络协议的消息格式都是用ASN．1句法描述的，并指明了采用何种编码规则。在协议的具体实现时，我们必须在发送方设置一个ASN．1编码器，将发送方所要传送的消息经ASN．1编码后再发送出去；然后在接收方设置一个ASN．1解码器，将接收到的经ASN．1编码的消息解码为符合接收方局部语法的消息格式。由于ASN．1已经成为国际化的标准，这样，经ASN．1处理的信息独立于任何应用环境，就不会因为应用环境的不同而引起二义性的解释。　　 ITU－T专门讲述ASN．1的共有20个协议：X．680～X．699（还不包括较老的X．208和X.209），内容相当丰富，也非常复杂。本文的任务不在于讲述ASN．1规定的诸多名词和冗长繁杂的编码细节，而只是对BER和PER的要点做简要介绍，并将它们对比起来进行研究-ASN. 1 (Abstract Syntax Notation One) by the ITU-T developed, consistent with the above three requirements. It defined coding rules (such as BER, PER) from the local grammar equivalent of transmission conversion between the grammar rules. At present, many of the news network protocol format is used ASN. A description of the syntax and specify what the coding rules. The agreement is a concrete realization, we must set up a sender ASN. An encoder, the sender will have to transmit information via the ASN. After a code sent; The receiver then set up an ASN. A decoder that will receive by the ASN. A coding information for decoding receiver with the local news format syntax. As ASN. One has become international standards, so that by ASN. An independent processing of information in any applicatio
Platform: | Size: 1187752 | Author: kong | Hits:

[Speech/Voice recognition/combine] PDFFILES

Description: 基于ARM7TDMI的SoC片内AC97模块和片外CODEC-UCB1400，采用ITU-T的G.721算法设计语音处理系统提出一种基于低端RISC核的语音系统设计方案。该方案结合SoC的片内eSRAM模块进行性能优化；通过在流片后的实际样机上验证，编码速率为19.88 KB/s，解码速率为22.68 KB/s，达到了语音实时性要求。-ARM7TDMI-based SoC chip AC97 module and off-chip CODEC-mated 00. using the ITU-T G.721 algorithm design voice processing system based on a low-end RISC-nuclear voice EC design. The solutions combine SoC chip modules eSRAM performance optimization; Flow-through in the actual prototype tested, coding rate of 19.88 KB / s and decoding rate of 22.68 KB / s achieve real-time voice requirements.
Platform: | Size: 981125 | Author: 李瑶 | Hits:

[Communication] G729SRC

Description: ITU-T Recommendation G.729
Platform: | Size: 198965 | Author: winny | Hits:

[3G develop] T-REC-Q.931-199805-I!!PDF-E

Description: ITU-T Q.931 SERIES Q: SWITCHING AND SIGNALLING Digital subscriber Signalling System No. 1 – Network layer
Platform: | Size: 1952768 | Author: 刘超 | Hits:

[Fax program] T-REC-T.30-200509-I!!PDF-C

Description: 中文版传真通信协议国际标准 ITU-T T.30-This Recommendation defines the procedures used by Group 3 facsimile terminals as defined in ITU-T Rec. T.4. These procedures enable documents to be transmitted on the general switched telephone network, international leased circuits and the Integrated Services Digital Network (ISDN). Further, these procedures allow communication to be manual or automatic and for document transmission to be requested alternatively with telephone conversation.With this revision, the colour spaces defined in ITU-T Rec.
Platform: | Size: 7796736 | Author: xu xiaoqing | Hits:

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