頻帶壓縮 的英文怎麼說

中文拼音 [bīndàiyāsuō]
頻帶壓縮 英文
band width compression
  • 頻 : Ⅰ形容詞（次數多） frequent Ⅱ副詞（屢次） frequently; repeatedly Ⅲ名詞1 [物理學] （物體每秒鐘振動...
  • 壓 : 壓構詞成分。
  • 縮 : 縮構詞成分。
  1. Digital audio tape cassette system - character pack format

    數字音頻磁帶盒系統.第4部分:字元壓縮格式
  2. In all kinds of complicated network, oriented linking and unlinking, communication frequency resource is strained, and bandwith to transmitting audio frequency signal is too restricted, complicated and fluky, while audio frequency data exponential have been increased in the last several years. under the circumstances, based on the research of predecessor, this paper studies wavelet analysis ' s maths gist and practices significance on signal process, and puts forward a optimized wavelet package condensation arithmetic to process audio frequency data, which gives attention to coding efficiency, multirate and compression delay. simulation experiment on the arithmetic has been done by matlab

    針對無連接和面向連接的各種復雜網路環境下，通信頻帶資源緊張，音頻傳輸帶寬有限且復雜多變，而各種音頻數據又日益增多的局面，本文研究小波分析在信號處理方面的數學依據和在數據壓縮方面的實際意義，在前人不斷工作的基礎上，提出了一種優化小波包變換編碼方案用於音頻數據的壓縮演算法，兼考慮了編碼效率、多碼率和壓縮時延多個方面，並在matlab環境下做了模擬實驗，對各種音頻信號及多種小波函數做了模擬結果比較，實驗結果證明該演算法可以在一定計算復雜度下可以很好地改進壓縮效果，達到多碼率下實現實時編解碼的過程，在高速dsp晶元等硬體設備支持下，可以有效應用於實際復雜多變信源編碼。
  3. With the established rf front - end system simulation platform, adding the digital modulated baseband signal, this paper simulated the multifold digital modulated signal ’ s transmission, such as 2ask, qpsk, and 16qam. then researches of power compression and phase noise of local oscillation influence the bit error ratio for different modulated system. the designing is satisfied multifold functions request with the high - powered and integrated broadband rf front - end

    隨后在建立的寬帶射頻前端通用模擬平臺上，加入基帶數字調制信號，對多種數字調制格式的信號在該通用平臺上的傳輸作了研究，模擬了2ask 、 qpsk和16qam等調制格式信號的發射與接收，研究了功率壓縮和本振相位噪聲對不同調制的誤碼率影響，實現了滿足多種功能要求的寬帶高性能綜合射頻前端的設計。
  4. The focus is placed on the investigation of the standard of the encoding algorithm for mpeg audio layer iii, and the analysis of the major four modules in the compression algorithm, including encoding of subband filter bank, psychoacoustics model, quantification and huffman coding, frame packing

    重點研究了mpeg音頻第層編碼的演算法標準。詳細分析了壓縮演算法中的四個主要功能模塊：子帶濾波器組編碼，心理聲學模型，比特流量化與霍夫曼編碼，幀數據流格式化。
  5. The main research works of this dissertation are aimed to design of radar waveform and the application of wavelets in ultra - wide radar, including : the design of a new kind of hybrid radar and the research of time side - lobe suppression for pulse compression, the design of receiver r adio front end in data acquisition of ultra - wide band radar, the time delay estimation based on wavelets ( packet ) analysis

    本文主要進行雷達波形設計研究以及研究小波理論在超寬帶雷達中的應用，集中體現在以下幾個方面：一類新的組合雷達波形設計及壓縮脈沖時間旁瓣抑制技術研究、超寬帶雷達多通道數據採集方法中前端射頻接收部分的設計及研製、基於小波（包）方法的時延估計方法。
  6. Though wide - band has been used widely, it ' s not wide enough to watch high - quality real - time video. futhermore, wiless communicaton has become a hot technology, it has limited band and unstable communication channel which result in high percentage of errorness in this situation, if people want to watch realtime video, it has high demand that video producer compress the video as small as possible when quality is good enough and receiver have ability of error resilience

    另外，無線通信已經成為當前it領域的一個大熱點，對無線通信來說，帶寬就更加有限，並且傳輸線路不穩定，錯誤率高，在這種情況下，如果想通過無線網路在線觀看視頻，必然需要視頻發送端在保證質量的情況下對視頻進行盡可能的壓縮，同時提供強大的糾錯和抗錯能力。
  7. Digital speech has preponderance over analog speech in reliability, robustness and security during communication. however, digital speech needs more bandwidth than the analog signal. especially with the requirement for communication frequency increasing, it ' s necessary to code speech signal at low rates

    但是，數字化后的信號所佔的頻帶大幅增加，特別是在帶寬需求日益增長的今天，這個問題尤為突出，因此語音的低速率編碼（即壓縮編碼）成為迫切的要求。
  8. Band compression technique

    頻帶壓縮技術
  9. There are several procedures used to reduce these deteriorating effects, including the use of forward error correction techniques, error concealment methods and error resilience schemes. this paper studies error resilient techniques in internet video transmission. in this techeniques, reed - solomon ( rs ) codes across packets is used for error protection against packet loss, and a self - adaptive error concealment method based on motion feature is proposed, which can conceal errors more effectively, particularly for video sequences with acute motion

    本文針對因特網視頻傳輸中的丟包現象進行研究，一方面利用rs編碼來提高視頻壓縮碼流抵抗誤碼的能力；另一方面，提出了一種基於運動特徵的自適應誤碼掩蓋方法，能夠較好的掩蓋視頻傳輸帶來的誤碼，特別對于運動幅度較大的視頻序列更能體現出其優勢。
  10. The method of compressing bandwidth of fringe function is proposed that basis fringe contains discrete spectrum which is based on human vision for real - time display, we also introduce discusses the spatial light modulators ( slms ) based on display system of digital holography and theory of numerical reconstruction of digital holography

    為了達到實時性要求，在滿足人眼視覺的光信息量基礎上，對帶寬壓縮的理論問題進行了研究，提出了基於離散頻譜的帶寬壓縮演算法，並給出了結果。
  11. Arithmetic figure that new dvd that conduct and actions world the adoption arithmetic figure of the first style see the port dvi port to broadcast, three stars the dvd - hd938 to can output to have not yet the compression to see the signal, but have no to need to pass by few molds the conversion process, from but avoided the loss of the painting quality with lose true, deliver the real arithmetic figure signal to television the dvi port is a high take the ieee1394 port breadth port, its deliver the speed to attain 5 gbps, is more than ten times to deliver the speed. at the same time, need not proceeding of port of adoption dvi few mold conversion, can avoid to convert what process result in to lose true, from but real realizes the arithmetic figure deliver

    作為世界第一款採用數字視頻埠dvi埠的新型dvd播放器，三星dvd - hd938能夠輸出未經壓縮的數字視頻信號，而無需經過數模轉換過程，從而避免了畫質的損失和失真，向電視傳輸真正的數字信號dvi埠是一種高帶寬的埠，其傳輸速度達到5gbps ，是ieee1394埠傳輸速度的十幾倍。同時，採用dvi埠不用進行數模轉換，可以避免轉化過程造成的失真，從而真正實現了數字傳輸。
  12. From the performance analysis of the inverter heat pump air conditioner, heat pump type vrf ( variable refrigerant flowrate ) air conditioning system, two - stage compression inverter air source heat pump, and cooling / heating / how - water inverter air source heat pump, the expanded function and performance improvement of air source heat pump from the variable frequency technology are analyzed in this paper

    摘要以變頻熱泵空調器、熱泵型vrf空調系統以及我們提出的雙級壓縮變頻空氣源熱泵系統、供冷/供熱/供生活熱水變頻空氣源熱泵系統為研究對象，分析變頻技術引入空氣源熱泵系統帶來的功能拓展和性能提升。
  13. Employing the interlaced scanning, current tv system can compress the frequency band of tv signal effectively and facilitate transmission. but this method reduces the scanning lines of pictures and the frequency of the field. it leads the pictures displayed on tv to have such disadvantages as large area flicker, edge flicker, interlace flicker, raster visibility and creeping line etc. to satisfy people " s vision feeling better, the big - screen, multi - function and high quality tv - set have been made great progress

    現行的廣播電視系統由於採用隔行掃描方式，從而有效地壓縮了電視信號的頻帶，有利於傳輸；但由於這種方式使得圖像的掃描行數少，場頻低，導致了重顯的電視圖像有大面積閃爍、邊緣閃爍、行間閃爍、行結構可見及行爬行等。
  14. - l video recording - helical - scan digital component video cassette recording format using 12, 65mm magnetic tape and incorporating data compression format digital - l

    視頻記錄. 12 . 65mm磁帶和相應壓縮數據螺旋掃描數字元件視頻盒式錄像帶格式
  15. Large time - band product signals such as linear frequency modulation signals ( lfm ), nonlinear frequency modulation signals ( nlfm ), phase coded signals and so on are one of key technologies for pulse compression radar systems

    具有大時寬帶寬積的信號，如線性調頻信號、非線性調頻信號、相位編碼信號等是雷達應用脈沖壓縮技術的關鍵之一。
  16. Pulse compression technique and large timeband product signals such as linear frequency modulation signals, nolinear frequency modulation signals, phase coded signals and so on are widely used in modern radar systems to improve the resolving power both in range and in speed domain

    現代雷達為了提高雷達作用距離和速度分辨力、距離分辨力，廣泛採用了脈沖壓縮技術及大時寬帶脈壓信號如：線形調頻、非線形調頻、相位編碼信號等。
  17. Pulse compression technique is widely used in modern radar systems. it solves the contradiction between the range and velocity resolution. large time - bandwidth product signals such as linear frequency modulation signals ( lfm ) are used in pulse compression technique to improve the resolution in range domain

    現代雷達系統廣泛採用脈沖壓縮技術，在確保雷達作用距離和速度分辨力的前提下，採用大時帶積脈沖壓縮信號:如線性調頻（ lfm ）信號提高距離分辨力。
  18. Radio - frequency noise jamming is an effective jamming to pulse compressed ( pc ) radar. it shows the best jam quality when it ' s bandwidth equals to the jammed signal ' s bandwidth and it ' s central frequency equals to that of the jammed radar ' s receiver

    射頻噪聲干擾對脈沖壓縮雷達是一種有效干擾，在其帶寬等於雷達信號帶寬，中心頻率對準雷達的中心頻率時具有最佳的干擾品質。
  19. Chirp signal is a kind of pulse - compressed signal with large time - bandwidth products achieved through linear frequency modulation. it has high resolution in range because of its great bandwidth

    線性調頻信號是通過線性頻率調制獲得大的時寬帶寬積的一種脈沖壓縮信號，具有大的帶寬，因此有高的距離分辨力。
  20. After the image lifting wavelet transformation, its coefficients have some characteristics, for example : the frequency compression characteristic, namely the primitive image energy majority of gathers to the low frequency sub - belt ; spatial compression characteristic, namely high frequency sub - belt energy majority of centralisms in primitive corresponding and so on image edge, outline position ; the coefficient distribution similarity, namely in the

    經提升小波變換后，其系數具有如下特性:頻率壓縮特性，即原始圖像的能量大部分聚集到低頻子帶;空間壓縮特性，即高頻子帶的能量大部分集中在原始圖像的邊緣、輪廓等對應的位置;系數分佈相似性，即同一方向上各級子帶系數幅值分佈大體一致。
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