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  • Mobile phones are constantly decreasing in size, thereby complicating the acoustical functionality.

    Mobile phones are constantly decreasing in size, thereby complicating the acoustical functionality. Signal processing methods can be used to partially mitigate this problem. In this paper we suggest a method which uses multiple spectral subtraction functions and two microphones, introducing only a short signal delay.

    標簽: functionality complicating acoustical constantly

    上傳時間: 2015-11-15

    上傳用戶:youth25

  • The Joint Video Team (JVT) of ISO/IEC MPEG and ITU-T VCEG are finalising a new standard for the cod

    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.

    標簽: finalising standard Joint ITU-T

    上傳時間: 2015-12-08

    上傳用戶:561596

  • 從結構上來說

    從結構上來說,實時多任務操作系統包括兩部分,一部分為操作系統內核(kernel),即實時執行程序(Real Time Executive:RTX),另一部分是輸入輸出部分(I/O)(注意開發系統不屬于操作系統的范疇);嵌入式系統對I/O的需求通常比較小(無文件系統需求),因此很多實時多任務操作系統本質上就是一個實時執行程序,如AMX(Kadak),VRTX(Microtec),iRMX(Intel)等(這里的X即:eXecutive),如果純粹從kernel的角度來考察目前流行的各種實時多任務操作系統的性能,它們的效率差別都不大。 在市面上可以得到一些RTX的源代碼(有用C實現的,有用匯編實現的,還有用PL/M語言實現的),從internet上也可以蕩一些下來(我介紹一個站點www.eg3.com,堪稱世界電子工程師資源寶庫),下面我要介紹的一個RTX版本(我命名為SRTX:short RTX),可以說是RTX中的元老級產品了,來自某研究所,九十年代初他們到美國考察,從美國某公司購得。五年以前,SRTX在國內有售,許多搞工控的研究所利用SRTX開發了一些大型或小型的產品,這里介紹的SRTX我作了一些簡化和改動.

    標簽:

    上傳時間: 2015-12-09

    上傳用戶:wang5829

  • This book shows how to design and implement C++ software that is more effective: more likely to beha

    This book shows how to design and implement C++ software that is more effective: more likely to behave correctly more robust in the face of exceptions more efficient more portable makes better use of language features adapts to change more gracefully works better in a mixed-language environment is easier to use correctly is harder to use incorrectly. In short, software that s just better.

    標簽: more effective implement software

    上傳時間: 2016-01-04

    上傳用戶:huyiming139

  • 風險財務控制庫 Risk Quantify is an open source financial library, with a focus on managing the risk of fi

    風險財務控制庫 Risk Quantify is an open source financial library, with a focus on managing the risk of financial instruments. The aim of this project is to provide people working in the financial industry with a good base to use in building their own applications. Risk Quantify provides pricing routines, term structure building and management, calendar routines, asset management routines and more.

    標簽: financial Quantify managing library

    上傳時間: 2014-01-25

    上傳用戶:363186

  • TC35i新版西門子工業GSM模塊是一個支持中文短信息的工業級GSM模塊,工作在EGSM900和GSM1800雙頻段,電源范圍為直流3.3~4.8V ,電流消耗——休眠狀態為3.5mA

    TC35i新版西門子工業GSM模塊是一個支持中文短信息的工業級GSM模塊,工作在EGSM900和GSM1800雙頻段,電源范圍為直流3.3~4.8V ,電流消耗——休眠狀態為3.5mA,空閑狀態為25mA,發射狀態為300mA(平均),2.5A峰值;可傳輸語音和數據信號, 功耗在EGSM900(4類)和GSM1800(1類)分別為2W和1W ,通過接口連接器和天線連接器分別連接SIM卡讀卡器和天線。SIM電壓為3V/1.8V,TC35i的數據接口(CMOS電平)通過AT命令可雙向傳輸指令和數據,可選波特率為300b/s~115kb/s , 自動波特率為1.2kb/s~115kb/s。它支持Text和PDU格式的SMS(Short Message Service,短消息),可通過AT命令或關斷信號實現重啟和故障恢復

    標簽: GSM 1800 EGSM 3.3

    上傳時間: 2016-03-17

    上傳用戶:a3318966

  • 書籍:Teach Yourself Visual C++ 6 in 21 Days 第一章的源碼: 所有的源碼都是我邊讀邊寫的

    書籍:Teach Yourself Visual C++ 6 in 21 Days 第一章的源碼: 所有的源碼都是我邊讀邊寫的,已經通過了VC6得便宜,適合VC6得初學愛好者,希望大家一起學習進步 書的在線地址,第一章: http://poincare.matf.bg.ac.yu/~filip/nm/Seminarski/VC-21days-short/ch01/ch01.htm

    標簽: Yourself Visual Teach Days

    上傳時間: 2016-04-04

    上傳用戶:hjshhyy

  • 書籍:Teach Yourself Visual C++ 6 in 21 Days 第2章的源碼:所有的源碼都是我邊讀邊寫的

    書籍:Teach Yourself Visual C++ 6 in 21 Days 第2章的源碼:所有的源碼都是我邊讀邊寫的,已經通過了VC6在WinXP下的編譯,適合VC6得初學愛好者,希望大家一起學習進步 第二章的在線地址: http://poincare.matf.bg.ac.yu/~filip/nm/Seminarski/VC-21days-short/ch02/ch02.htm

    標簽: Yourself Visual Teach Days

    上傳時間: 2014-01-21

    上傳用戶:chenlong

  • 好用的超級終端軟件

    好用的超級終端軟件,配置交換機路由器等,軟件名稱為tcl,tera term

    標簽: 超級 軟件

    上傳時間: 2013-12-25

    上傳用戶:heart520beat

  • ead file "YD.DOC". Who is the intended user Beginners in assembly and programmers. Features o

    ead file "YD.DOC". Who is the intended user Beginners in assembly and programmers. Features of the program: Yilmaz Disassembler:is an interactive disassembler which lets the user be a part of the disassembling process,is flexible, the user can disassemble in different formats,has user friendly interface, mouse support, pop-up menu commands, short cut key commands, context-sensitive on-line help,and it is cheap. Program s capacity and limitations: Max executable file size is 64 KB. Can not disassemble program of EXE-format.Only 8086/8088 CPU instructions can be disassembled. Disassemble 8087 Math Co-processor s instructions.

    標簽: programmers Beginners Features assembly

    上傳時間: 2014-06-21

    上傳用戶:皇族傳媒

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