編碼呼叫 的英文怎麼說
中文拼音 [biānmǎhūjiào]
編碼呼叫
英文
code call-
The mainline code orchestrating the invocations of a series of such services runs in a special container called a
編排這樣一系列服務的呼叫的主流程程式碼在一個稱為Coder call indicator
編碼呼叫指示器Section ii describes the design approach and implementation of speech module on mcf5249 coldfire core. the speech codec optimizes g. 729a codes and added voice activity detection of g. 729b to save bandwidth ; the implementation of acoustic echo cancellation uses nlms algorithm and it can reduce echo though designing adaptive fir filter and speech detector ; the dtmf and cpt generate signal using two second order digital sinusoidal oscillators and detect signal by picking up the frequency information. but only get the frequency information is not enough in cpt detector, this thesis introduces a method
其中對語音編解碼器的設計採用優化g . 729a代碼達到設計要求，並在此基礎上加入g . 729b的靜音檢測模塊，以進一步降低網路傳輸帶寬;對回聲消除器的設計採用nlms演算法，通過設計自適應fir濾波器和語音檢測器達到回聲消除目的;對雙音多頻設計，信號發生端採用構造靜態參數表並通過二階正弦振蕩器產生信號，信號檢測端提取頻率信息以檢測信號;對呼叫進程音設計，除了類似雙音多頻的信號發生及頻率檢測設計外，還需要檢測信號持續時間，作者設計了一種基於匹配狀態表的方法以檢測信號持續時間。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。As to calls between cross - provincial user groups, there is no inter - provincial short number numbering plans. users of cross - provincial groups have to use and display real numbers for intra - network calls
並且可以通過該號碼回撥主叫，而對于跨省集團省間不統一短號碼編號方案，分省進行短號碼編號，跨省集團不同省份用戶間的網內呼叫使用並顯示真實號碼。The module of user agent need accomplish these tasks of making the message, analyzing the information, user agent, negotiating about the media. the module of real - time transport need complete these tasks of converting the data, coding and decoding the data and receiving and sending the packet. the module of management of the system ' s source need manage the keyboard and display and so on
用戶代理模塊需要完成消息的接收和發送、消息的生成、消息的分析、用戶代理的事務狀態機管理、呼叫雙方媒體流協商的功能；實時傳輸模塊需要完成數據轉換、數據的編解碼、數據包的生成和分解及數據包的發送和接收；系統資源管理模塊需要管理系統的鍵盤、用戶界面等。分享友人