voice-communication band 中文意思是什麼

voice-communication band 解釋
無線電廣播波段
  • voice : n 1 語聲；嗓音；鳴聲；〈比喻〉呼聲。2 發聲力，語言（力）；想說話的慾望。3 （學說、主義等的）代言...
  • communication : n. 1. 通訊，通知；交換；信息；書信，口信，通報。2. 傳達，傳授；傳播；傳染。3. 交通，交通機關；聯系，連絡（設備）。4. 【宗教】接受聖餐。
  • band : n 1 帶，繩；帶形物；箍；箍條；嵌條；鑲邊；鋸條； 〈pl 〉 （法官等的）寬領帶。2 束縛，羈絆；義務；...
  1. In communicaton the bandwidth is an important problem that we should consider, specially in wireless communication. in fact the fiber is mainly used in backbone networks, so it is essential to develop the low rating coding technology of voice. the arithmetic of melp is based on the model of lpc and use the form of mixed excitation. because it integrates the idea of multi - band, so it has the merit of lpc and mbe. it is a perfect coding scheme in low rating voice coding relatively

    而melp語音壓縮編碼演算法是在線性預測編碼參數模型的基礎上，採用混合激勵的形式，並且結合了多帶的思想，因此它擁有線性預測編碼和多帶激勵的優點，是目前低速率語音編碼中一種比較理想的編碼方案，也是本文研究的重點。本論文通過研究melp的語音編解碼演算法的原理，對它的編解碼過程作了比較深入的研究，對其中的一些公式進行了理論推導，並作了模擬分析，最後研究了該演算法的c語言實現。
  2. Bluetooth operates in the global available 2. 4ghz free ism band, its topology is the piconet. it implements the wireless communication with data and voice, by the combination of circuit switching and packet switching

    藍牙使用免申請2 . 4ghzism頻段，採用微微網作為其網路的基本單元，並採用電路交換技術和分組交換技術組合，實現語音和數據的無線通信。
  3. With the development of the 3g wcdma digital cellular mobile communication technologies and quick increase of chinese mobile communication market ' s requirment to multi - media data service, mobile communication technology is developing from providing simple voice service 、 low speed data service to providing the combination of the voice service and the variable band - width multi - media data service. wcdma already has been a 3g communication standard in many country

    隨著3gwcdma數字蜂窩通信技術的發展以及中國移動通信市場對多媒體數據業務需求的迅速增長，移動通信技術正從提供簡單的話音業務。低速數據業務向提供話音業務和可變帶寬的多媒體數據業務相結合的方向發展， wcdma已經成為很多國家選用的第三代移動通信的標準。
  4. Bluetooth wireless technology uses the globally available unlicensed ism radio band of 2. 4ghz and its topology is best described as a multiple piconet structure. it implements the wireless communication with data and voice, by the combination of circuit switching and packet switching

    藍牙使用免申請2 . 4ghzism頻段，採用微微網作為其網路的基本單元，並採用電路交換技術和分組交換技術組合，實現語音和數據的無線通信。
  5. The incoming 3g could not only support the existing mobile operations, but also broad band video operations high quality voice packet data transmission and real time video communication. 3g starts a new era of the combination of wireless communication, internet and video

    呼之欲出的第三代（ 3g ）移動通信不僅能提供現有的各種移動電話業務，還能提供高速率的寬帶視頻業務，支持高質量的話音、分組數據業務以及實時的視頻傳輸。
  6. This task uses the ds - ss technology, and researchs the important technologies, such as synchronization of ds - ss, rake receive, narrow - band interference suppression, etc. these technology are useful for the voice - band channel of hf. i designed one system of very low bit rate for hf data communication, and completed the softwave module design of the system. i get the result of system ' s simulator, it ' s useful for the system realization

    根據短波音頻帶寬通道的特點，重點對系統的擴頻同步技術、 rake接收技術和窄帶抗干擾技術進行了專題的研究。並根據自己多年的科研經驗，設計了一種具有實際意義的短波最低限度通信系統，並對實際的軟體實現進行了模塊化的設計。
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