譜包絡 的英文怎麼說

中文拼音 [pǔbāolào]
譜包絡 英文
spectrum envelope
  • 譜 : Ⅰ名詞[書面語]1 （按類別或系統編成的書或冊子等） table; chart; register 2 （指導練習的格式或圖形）...
  • 絡 : 絡構詞成分。
  1. An agonic algorithm of speech logarithm spectrum envelope

    一種語音信號對數幅度譜包絡的無偏演算法
  2. In this paper, we reported the synthesis of three supramolecular complexes between - cyclodextrin and anisole, ethyl benzoate, m - cresol, respectively, which are identified by means of 1hnmr technique

    摘要以-環糊精與苯甲酸乙酯、苯甲醚和間甲酚在水相中通過范德華力發生包合反應形成了主客體超分子絡合物，並用核磁共振氫譜對絡合物進行了表徵。
  3. Formant : it uses the estimation of the overall shape of the spectrum ' s amplitude envelope

    共振峰:使用了對頻譜的振幅包絡線的大體形狀所作的估計。
  4. So they can not be used in on - line fault detection and condition monitoring. and the explanation of the time - frequency analysis is not easily accepted by the engineers. the experimental factors, such as rotational speed and measured position and fault distribution a

    文中還針對轉速、測點位置、故障分佈（位置） 、負載等因素對頻譜分析、包絡分析、時延相關解調等方法的診斷效果進行了大量的實驗研究。
  5. The ship radiated noise is analyzed and its 4 features are extracted from the envelop spectrum. the envelope of ship noise waveform can be demodulated utilizing hilbert transform, and the spectrum components with line rotation frequency of propeller shaft are extracted effectively by bispectrum, 1 ( 1 / 2 ) spectrum and 2 ( 1 / 2 ) spectrum analysis

    對于通過希爾伯特變換解出的艦船輻射噪聲包絡信號進行高階統計量分析，有效地提取出了艦船噪聲的雙譜、 11 / 2維譜、 21 / 2維譜等方面的特徵。
  6. By theory and practice simulation, the several types of constant envelope modulation techniques are analyzed and compared, including theirs modulation principle, phase path, the modulated wave envelope, power spectrums, error bit rate and the influence of its power spectrums of the band - limited and non - linear, etc. especially we have researched the ijf - oqpsk modulation technique, and the performance of its inter - symbol interference and time jitter free, and its strongly resisting of spectral spreading

    結合理論和實驗模擬結果，分析討論了衛星通信中的各種恆包絡調制技術，對它們的調制原理，相位路徑，已調波包絡，功率譜密度，誤碼性能，以及帶限非線性通道對其功率譜的影響等方面都作了研究和比較。特別研究了ijf ? oqpsk在消除碼間干擾和定時抖動方面的性能及其優良的旁瓣特性和抑制頻譜擴展特性。
  7. Wavelet analysis is used to translate noise signal of the engine into time - frequency domain. selecting appropriate frequency band to pick up and making its envelope spectrum, then two feature frequency - 0. 5x speed frequency and 2x speed frequency that represent the abrasion condition can be found. in addition, a new diagnosis method of image processing technique is proposed

    利用小波分析將測得的機體噪聲信號變換到時頻域，選擇合適的頻帶加以提取並進行包絡譜分析提取包含特徵頻率的包絡，通過分析提取后的0 . 5倍頻和2倍頻分量，發現兩個特徵頻率可準確反映主軸承的磨損狀況。
  8. According to fourier analysis theory and the results of coupling theory of uniform fiber grating, the spectral characteristics of sampled fiber grating is studied theoretically and the formula about its overall envelop, peek interval and the number of these peaks are obtained

    摘要運用傅立葉分析與均勻光纖光柵耦合模理論的結果，對取樣光纖光柵的光譜特性進行了理論研究，得到取樣光纖光柵反射峰包絡、反射峰間隔和反射峰數量的理論計算公式。
  9. The main aim of speech signal processing is speech coding, speech recognition and speech understanding by automaton. in this paper, firstly, some basic signal process are discussed, such as signal filter, sampling, fft, pitch detection, then, they are tested on the testing board designed by the author

    論文中首先對語音信號的基本處理問題進行了分析和對比，然後在自己設計的基於tms320vc5402的dsp實際系統上，進行了語音處理過程的濾波、采樣、傅立葉變換和譜包絡提取的演算法實現研究，討論了在演算法的dsp實現方法，分析了運行實驗結果。
  10. From the research of ijf - oqpsk, we draw the conclusion that, compared with bpsk, qpsk and msk modems, in the band - limited and non - linear channel, it has nearly constant envelope, less spectral spreading, better pe performance and the less interference of the adjacent channel, et. so, it is more suitable for the satellite communication channel

    通過對ijf ? oqpsk的分析研究可知，它相對于傳統的bpsk和qpsk調制方式，在帶限非線性通道下，具有包絡近似恆定，頻譜擴展小， eb no惡化小，對鄰道產生干擾弱等優點，因而它更適合於衛星通道。
  11. We have designed a new type of ijf code to reduce the envelope fluctuation, and have also got the reduced envelope fluctuation ijf - oqpsk. it has faster roll off of the power spectrum and lower energy of band out

    本文設計了一種能夠抑制包絡起伏型的ijf信號碼型，並相應地得到了抑制包絡起伏型的ijf ? oqpsk ，它具有更快的功率譜滾降特性和更好的相位路徑。
  12. This paper relates to some problems about the determination of design ground motion parameters, which include the choice of the attenuation relationship of rock horizontal acceleration response spectrum, the impact of focal depth to rock peak horizontal acceleration and rock response spectrum curves, the choice of intensity envelops function and random input phase, the choice of soil nonlinearity and shear wave velocity, scale of design ground motion response spectrum etc. in the researches of relative aspect, based on a typical section plane of the engineering site, influence of the change of some parameters on design ground motion parameters and the existing errors and corresponding rules are studied by using the method of one dimension model of equivalent linearization

    摘要研究了確定設計地震動參數中涉及的若干問題，其中包括基巖水平加速度反應譜衰減關系的選擇、震源深度對基巖水平加速度峰值及基巖反應譜曲線的影響、強度包絡線函數及輸入隨機相位的選擇、土體非線性特性參數和土層剪切波速值的選擇、設計地震動反應譜的標定等問題。
  13. As compared with the solution using pulse envelope representation, the propagation equation using complex analytic signal representation reveals different spatiotemporal behaviors such as spectrum redshifting, narrowing, and pulse broadening, etc. 2

    復解析信號解會出現光譜紅移、變窄、脈沖變寬等與脈沖包絡解不同的時空特性。
  14. The quantized lp coefficients are replaced by the unquantized lp coefficients in the frequency domain expression of the feel weighted filter. the error signal has more similar envelope shape, and the hearing effect is better than before because the unquantized lp coefficients have more accuracy than quantized lp coefficients

    由於未量化的線性預測系數具有更高的精度，因此，誤差信號通過修正後的感覺加權濾波器以後，具有與語音信號譜更加相似的包絡形狀，從而更好地利用共振峰對誤差的掩蔽效應，達到更佳的主觀聽覺效果。
  15. Absorption - band parameters such as the position, depth, width, and asymmetry of the feature have been used to quantitatively estimate composition of samples from hyperspectral data. so spectral absorptions are very important feature bands in use of hyperspectral classification and targets identify, this paper extracts absorption features of actual hyperspectral image by continuum removed method which is very useful. then tested both of them by

    吸收峰波段參數例如波長位置、深度、寬度、斜率、對稱度、面積等常常被用來定量的估計高光譜樣本的組成，因此光譜的吸收峰是高光譜識別分類應用中很重要的特徵波段，論文通過包絡線去除這種很有效的光譜分析工具提取出了實際的高光譜圖像的地物光譜的吸收峰參數。
  16. As another application instance, a subsystem monitoring ultra - high frequency partial discharge of transformer is developed, which can analyse, process, plot time - domain pd data and demodulated pd data, besides, it also has such discharge type recognition function as spectrum calculation and auto correlation

    作為另一應用實例，研製了變壓器超高頻局放監測子系統，此系統具有分析、處理、顯示超高頻時域波形及其包絡線波形數據的功能，還具有用於放電模式識別的時域波形及其包絡線波形的頻譜計算和自相關處理等功能。
  17. The advantages of the modulation method omsk ( the gaussian pre - filtered minimum shift keying ) include bandwidth efficiency and constant envelope

    Gsm系統中採用了gmsk調制方式， gmsk調制恆定包絡，具有較高的頻譜利用率。
  18. The distribution of line - spectrum and its harmonics extracted from the spectral envelope of different target ' s radiated noise exhibits strong differences, which may provide important clue for the detection and classification of targets

    摘要不同類型目標輻射噪聲包絡譜中的線譜及其諧波分佈存在較大差異，是進行目標檢測和分類識別的重要線索。
  19. In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described

    汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
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