echo suppression 中文意思是什麼

echo suppression 解釋
回波信號的抑制
  • echo : n （pl echoes）1 回聲，反響；共鳴，反映。2 重復，摹仿；摹仿者；應聲蟲。3 【音韻學】與上句末音押韻...
  • suppression : n. 1. 鎮壓，撲滅。2. 抑制；隱匿；含蓄。3. 制止；禁止；刪除；【醫學】閉止；萎縮。
  1. 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。
  2. And the polarimetric processing of radar echo, using virtual polarization, is mainly studied in this dissertation, including target polarimetric enhancement and clutter polarimetric suppression

    本文首先介紹了雷達極化的基礎理論，並著重研究了對雷達回波信號的極化處理，運用虛擬極化實現目標極化增強和雜波抑制。
  3. Signal processing for acoustic echo control includes modeling of reverberation, design of dereverberation algorithms, echo suppression, double - talk detection and adaptive acoustic echo cancellation, which is still a challenging problem in stereo full - duplex communication environments [ 3. 53 ]

    聲學回聲控制的信號處理包括回響模型、消回響演算法設計、回聲抑制、雙方講話檢測以及適應回聲消除，這仍然是立體聲全雙工通信環境中富有挑戰性的問題。
  4. To the first one, the method of new sidelobe - suppression filter and the method of cutting big signals from the echo are put up, and the result is fine. to the second one, get the echo without earth clutters, and send it to the adaptive system as the input signal, so that the best result can be reached. finally the influence of the bad signal is given

    針對旁瓣問題，提出新型旁瓣抑制濾波器方案和從回波中去除大功率信號方案，取得較好處理效果；在和相控陣處理的融合問題上，提出去除回波中地雜波的方法，為自適應處理提供較好的數據源；最後簡要分析惡劣環境對信號處理的影響。
  5. Based on theoretical deductions and data simulations, this dissertation analyzes properties of echo data in time domain, frequency domain and wavelet packet transform ( wpt ) domain. we also analysize properties of complex image data in image domain, image frequency domain and image wavelet packet transform domain. several methods are proposed for jamming suppression in signal domain and image domain respectively

    本文在理論推導、數據模擬的基礎上，分析了原始回波數據在時域、頻域和小波變換域的特徵以及復圖像數據在圖像域、圖像頻域和圖像小波變換域的特徵，提出了幾種行之有效的信號域和圖像域抑制方法。
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