acoustic telecommunication 中文意思是什麼

acoustic telecommunication 解釋
聲響電報通信
  • acoustic : adj. 1. 聽覺的；聲學的。2. 助聽的；傳音的。3. 原聲的，不經過電子設備傳聲的。adv. -tically 在聽覺上；在聲學上。
  • telecommunication : n. 1. 電信。2. 〈pl. 〉電信學〈口語中可縮略為telecomms〉。
  • telecommunicatio : 電信
  • n : 1. 【羅馬數字】90〈N＝90000〉。2. 【化學】＝nitrogen. 3. ＝North（ern）。N ＝nuclear 核的：N-waste 核廢料。
  1. Equipment engineering - acoustic noise emitted by telecommunication quipment

    設備工程.電信設備產生的噪聲
  2. Hands - free speech communication is indispensable in audio and video conference systems, hot - line telephones and videophones, mobile radio terminals, digital isdn network etc. however, the control ( cancellation ) of the acoustic echo has always had a strong impact on the transmission quality in hands - free telecommunication ~ [ 1 - 3 ] conventional methods of acoustic echo control ( cancellation ), such as echo suppression or gain control, may lead to the degradations in speech quality or make the speakers feel uncomfortable

    免提式話音通信在移動電話、熱線電話、車載電話及isdn網的電視電話會議等多種領域正得到日益廣泛的應用。但至今的免提式話音通信中，仍免不了受回聲引起的話音失真、甚至嘯叫等干擾，大大降低了免提話音通信的質量。由於聲回波對消問題尚未得到圓滿解決，實現高質量的免提式話音通信仍是一個極賦挑戰性的課題。
  3. Iron - doped photorefractive lithium - niobate crystals ( linbo3 : fe ) have good electro - optic, acoustic - optic, nonlinear characterizations, and hardly light absorption and photorefractive sensitivity in the wavelength around 1550nm, which makes them attractive for using as passive optical components in telecommunication networks

    而光折變linbo _ 3 : fe晶體具有良好的電光、聲光以及非線性特性，且在現有的通信窗口1550nm波長處幾乎沒有光吸收，對光的敏感性很小，是光折變光柵應用於光通信系統的首選材料。
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