話音編碼器 的英文怎麼說
中文拼音 [huàyīnbiānmǎqì]
話音編碼器
英文
vco voice coder- 話 : Ⅰ名詞(說出來的能夠表達思想的聲音, 或者把這種聲音記錄下來的文字) word; talk Ⅱ動詞(說; 談) talk about; speak about
- 音 : 名詞1. (聲音) sound 2. (消息) news; tidings 3. [物理學] (音質) tone 4. (姓氏) a surname
- 編 : Ⅰ動詞1 (編織) weave; plait; braid 2 (組織; 排列) make a list; arrange in a list; organize; gr...
- 碼 : Ⅰ名詞(表示數目的符號或用具) a sign or object indicating number; code Ⅱ量詞1 (指一件事或一類的...
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 話音 : 1. (說話的聲音) one's voice in speech2. [口語] (言外之意) tone; implication
- 編碼器 : (將一項信息變換成一系列數碼信號的電路) coder; encoder; encipheror編碼器方框圖 encoder block diagram
- 編碼 : encoded; code; coded; encrypt; codogram; coding編碼表 encode table; 編碼程序 builder; 編碼尺 code...
-
Once has the bandits and thieves to intrude guards against the place, the detector launches the wireless coded signal immediately, the networking center number which installs when is apart from defense area 150 meter within the main engine to send out the police whistle sound to report to the police immediately, reports to the police dials to establish in advance or reports to the police the telephone, the handset number, answers in the police telephone to return puts user pre - record to report to the police the pronunciation, long - distance reports to the police, simultaneously comes the real - time transmission through the internet to deploy troops for defense, to withdraw from a defended position, to report to the police and so on the condition, inquires the historic record through the computer network
該系統還採用美國進口原裝晶元與先進的無線數字高頻技術微電腦cpu控制器主機組成。在防範地點安裝好主機后,並設置在布防狀態。一旦有盜賊闖入防範地點,探測器立刻發射無線編碼信號,安裝在距防區150米以內的主機立即發出警笛聲報警,報警時撥打預先設定的聯網中心號碼或報警電話手機號碼,接警電話里回放用戶預錄的報警語音,遠程報警,同時通過網際網路來實時傳遞布防撤防報警等狀態,通過電腦網路來查詢歷史記錄。The system is consist of the main data processing board which is based onthe fpga device and fast ethernet phyceiver rtl8201l and a - law pcm data encoder and decorder chip msm7702 - 3, and the dial - up and display board which is based on mcu. the main board would carry out the core task of data processing, such as voice data packing and unpacking, the ethernet frame processing, protocol processing, call processing, etc. the dial - up and display board would carry out the task of display the ip address which is input by consumer and status of network during talk period from the main board, and so on. in the paper the system of lan ip telephone and the tcp / ip protocol is introduced firstly, then the fpga device is stated. after that the fpga - based hardware scheme is introduced in detail in chapter four
系統以altera公司的acex1k系列的fpga和快速以太網控制器rtl8201l和語音編解碼晶元msm7702 - 3為核心構建了數據處理主板和以單片機為控制器的撥號顯示子板組成。數據處理主板的核心任務,包括語音數據處理、以太網幀處理、協議處理、呼叫處理等。撥號顯示子板則完成通話前的顯示用戶所撥過的ip地址,通話期間網路狀態的顯示等等。The quality of the existing low bit rate codecs is not satisfied
而目前已有的低速率編碼器,話音質量不夠理想。The evrc vocoder is varialbe rate, the maximal encode rate is skbps, its voice quality is closed to qcelp - 13k, and has better ability of anti - disturbance
Evrc聲碼器是可變速率的,最大編碼速率為8kbps ,在話音質量上接近於qcelp - 13k的語音編碼器,且具有更好的抗干擾能力。The whole paper had been divided into four parts : the first part introduces the general situation of digital trunking system and its channel encoding, the recent development of viterbi decoding ; the second part studies the error control scheme, and the convolution decoding depth which is most fit to digital trunking system ; the third part introduces several low power viterbi decoder and its principle ; the last part proposes a united - decision estimating viterbi decoding algorithm
本文共分為四部分,第一部分介紹了數字集群及其通道編碼的總體情況, viterbi譯碼的發展現狀。第二部分給出了數字集群系統中話音通道差錯控制總體方案,並研究了適合數字集群系統的卷積碼的解碼深度。第三部分簡單介紹了各種低功率viterbi譯碼器及原理。And the main focus is the design, implementation and testing of an adaptive line echo canceller and a vocoder based on multi - band excitation ( mbe ) model
主要工作是設計並實現電話線路自適應回波抵消器和基於多帶激勵模型的語音編解碼器。Based on the analysis of current situation and the development trend of ip phone, this paper has put forward the solution of a kind of new - type embedded ip phone terminal and has finished designing the ip phone codec which is the key part of ip phone terminal
針對第三代ip電話的技術現狀和發展趨勢,本論文提出了一種新型的嵌入式ip電話終端解決方案,並完成了該終端的核心部分,語音編解碼器的設計與實現。This paper also provides some background knowledge about sip and video conference, such as the sip framework, the history of voip and video conference, etc. this paper emphasizes on the implementation of sip terminal on the windows platform, including the realization of sip stack, the capture and compression of video and audio steams, rtp transmission of stream data, the working thread of sip terminal and the optimization of video codecs
本文在論述研究工作的同時也介紹了一些相關的背景知識如sip協議的框架、 voip和可視電話的發展歷史等。本文重點論述了windows平臺sip多媒體終端的實現,包括sip協議棧的實現、視音頻流的採集、編解碼和網路傳輸方案、 sip終端的工作流程、以及編解碼器基於指令集的優化。This thesis has put forward ip phone terminal solution of dsp + embedded cpu ". on the basis of this scheme, this text introuduces the ip telephone systematic framework and the selection of chips for the codec
提出了「 dsp +嵌入式cpu 」的ip語音終端解決方案,並給出了ip電話編解碼器的系統構架和晶元選型。During the process of voice terminal design, the author firstly presents its hardware structure, including the coding and encoding module of ip, the interface to former access network equipment and etc, and then the author illustrates in detail the software realization of g723. 1 & g711 coder and encoder, then introduces how to realize the application of rtp / rtcp protocol in h. 323 gateway by openh323, including the design of the process and the realization of the data package format and partial code
在語音終端設計中,首先提出了其硬體構架,包括ip語音編解碼模塊,與原接入網設備的介面等;然後重點討論了g . 723 . 1和g . 711編解碼器的軟體實現。在h . 323網關模塊中,首先討論了ip電話網關的系統架構;接下來介紹了openh323軟體開發包,並詳細介紹了利用openh323實現rtp / rtcp協議在h . 323網關中的應用,包括流程設計,數據包格式和部分代碼實現。分享友人