initialization command 中文意思是什麼
initialization command
解釋
起始命令- initialization : 初始化, 賦初值, 預置
- command : vt 1 命令，指令；指揮，統率（軍隊等）。2 左右，支配，控制，管理，掌握。3 自由使用。4 博得，得到（...
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In this paper, we briefly introduced the performance of wave coding and vocoder, emphasizedly studied the principle and performance of variable rate vocoder q4401, including the internal construction and pins, qcelp coder & vocoder, pcm interface, cpu interface initialization process, command format and so on. we also designed a application circuit, with the experiment validated its performance. in this design, the pcm interface chip is tp3057, it was used to finish a / d transform, the compress coding was finished by q4401, the initialization and control were accomplished by 8051 singlechip
重點是研究變速率語音編解碼晶元q4401的工作原理及性能。其中包括q4401的內部結構及管腳、 qcelp編碼方式、 pcm介面、 cpu介面、初始化過程、命令格式等，並在此基礎上，設計一個實際的應用電路，通過實驗，驗證其性能。在設計中用pcm介面晶元tp3057來完成從模擬信號到數字信號的轉換，再由q4401進行壓縮編碼，對q4401的初始化及控制由8051單片機來完成。
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